Cannot select the whole stack when selecting the second stack on mouseover

Cannot select the whole stack when selecting the second stack on mouseover - javascript

I am trying to create a divergent bar chart, which shows the buy and sell volume on a particular date.
The graph has both zoom and brush working on it. I am having trouble selecting the whole bar when hovering/clicking on the orange(Sell) color bar, the Blue(Buy) color bar works on mouseover and click. I have created same class name for a stack but when I try to select the lower stack the stroke width does not change and same is the case with click. In both the functions, upper bar works but not the lower one. Also any suggestion on how to deactivate the click when an event is made on the body of the svg would be appreciated.
working image :
Problem:
Here is the code for the chart
<!DOCtyPE html>
<meta charset="utf-8">
<style type="text/css">
body {
font-family: avenir next, sans-serif;
font-size: 12px;
}
.zoom {
cursor: move;
fill: none;
pointer-events: all;
}
#tooltip {
background-color: rgba(187, 187, 187, 0.7);
border-radius: 5px;
height: 18px;
opacity: 0;
pointer-events: none;
position: absolute;
text-align: center;
}
</style>
<body>
</body>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="https://unpkg.com/d3fc#13.0.1"></script>
<script>
function randomData(samples) {
var data = [],
random = d3.randomNormal();
for (i = 0; i < samples; i++) {
data.push({
Buy: Math.floor(Math.abs(Math.random()*1000000)),
Sell: Math.floor(Math.abs(Math.random()*1000000)),
Date: new Date(2013,01,i)
});
}
return data;
}
var data = randomData(100)
data.forEach(d => {
d["Date"] = new Date(d["Date"]);
d["Buy"] = +d["Buy"];
d["Sell"] = +d["Sell"]*(-1);
})
var margin = {top: 20, right: 20, bottom: 230, left: 70},
margin2 = {top: 250, right: 20, bottom: 30, left: 50},
width = 960 - margin.left - margin.right,
height = 900 - margin.top - margin.bottom,
height2 = 350 - margin2.top - margin2.bottom;
var series = d3.stack()
.keys(["Buy", "Sell"])
.offset(d3.stackOffsetDiverging)
(data);
console.log(series)
var Ctx = d3.scaleTime().rangeRound([0, width]),
x = fc.scaleDiscontinuous(d3.scaleTime().rangeRound([0, width])).discontinuityProvider(fc.discontinuitySkipWeekends()),
y = d3.scaleLinear().range([height ,0]),
Cty = d3.scaleLinear().rangeRound([height2, 0]),
x3 = d3.scaleTime().rangeRound([0, width]);
x.domain(d3.extent(data,function(d) { return d["Date"]; }))
y.domain([d3.min(series, stackMin), d3.max(series, stackMax)])
Ctx.domain(x.domain());
Cty.domain(y.domain());
let formatValue = d3.format(".2s");
function stackMin(serie) {
return d3.min(serie, function(d) { return d[0]; });
}
function stackMax(serie) {
return d3.max(serie, function(d) { return d[1]; });
}
var z = d3.scaleOrdinal(d3.schemeCategory10)
var xAxis = d3.axisBottom(x).tickSize(0),
xAxis3 = d3.axisBottom(x3).ticks(0).tickSize(0),
xAxis2 = d3.axisBottom(Ctx).tickSize(0),
yAxis = d3.axisLeft(y).tickFormat(function(d) { return formatValue(d).replace('G', 'B');});
var brush = d3.brushX()
.extent([[0, 0], [width, height2]])
.on("brush", brushed);
var zoom = d3.zoom()
.scaleExtent([1, 50])
.translateExtent([[0, 0], [width, height]])
.extent([[0, 0], [width, height]])
.on("zoom", zoomed);
var svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom);
svg.append("rect")
.attr("class", "zoom")
.attr("width", width)
.attr("height", height)
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.call(zoom);
svg.append("defs").append("clipPath")
.attr("id", "clip")
.append("rect")
.attr("width", width)
.attr("height", height);
var focus = svg.append("g")
.attr("class", "focus")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var context = svg.append("g")
.attr("class", "context")
.attr("transform", "translate(" + margin2.left + "," + (height+80)+ ")");
var bars = focus.append("g");
bars.attr("clip-path", "url(#clip)")
.attr("cursor","pointer")
.attr("height",height)
.attr("width",width);
focus
.append("g")
.attr("class", "axis x-axis")
.attr("transform", `translate(0,${height+5})`)
.call(xAxis);
focus.append("g")
.attr("class", "axis axis--y")
.call(yAxis);
bars.selectAll("g")
.data(series)
.enter().append("g")
.attr("fill", function(d) { return z(d.key) })
.selectAll("rect")
.data(function(d) { return d; })
.enter().append("rect")
.attr('class', (d, i) => `bar bar-${i}`)
.transition()
.duration(1000)
.attr("width",10)
.attr("x", function(d) { return x(d.data["Date"])})
.attr("y", function(d) { return y(d[1])})
.attr("height", function(d) { return y(d[0]) - y(d[1])});
var toggleSelected = true;
focus.selectAll(".bar")
.on('mouseover', function (d, i, elements) {
d3.selectAll(`.bar-${i}`)
.style('stroke', 'black')
.style('stroke-width', '2')
tooltip.transition()
.duration(100)
.style('opacity', .9);
tooltip.text((d3.select(this)))
.style('left', `${d3.event.pageX + 2}px`)
.style('top', `${d3.event.pageY - 18}px`);
})
.on('mouseout', function (d, i, elements) {
d3.selectAll(`.bar-${i}`)
.style('stroke', 'none')
.style('stroke-width', '0')
tooltip.transition()
.duration(400)
.style('opacity', 0);
//
})
.on("click",function (d, i, elements) {
if(toggleSelected == true) {
d3.selectAll(`.bar:not(.bar-${i})`)
.style("opacity",0.2)
toggleSelected = false;
} else {
d3.selectAll(`.bar`)
.style("opacity",1)
toggleSelected = true;
}
})
var bars = context.append("g");
bars.attr("clip-path", "url(#clip)");
bars.selectAll("bar")
.data(series)
.enter().append("g")
.attr("fill", function(d) { return z(d.key); })
.selectAll("rect")
.data(function(d) { return d; })
.enter().append("rect")
.attr('class', 'barContext')
.attr("width",5)
.attr("x", function(d) { return Ctx(d.data["Date"])})
.attr("y", function(d) { return Cty(d[1])})
.attr("height", function(d) { return Cty(d[0]) - Cty(d[1])})
context.append("g")
.attr("class", "axis x-axis")
.attr("transform", "translate(0," + height2 + ")")
.call(xAxis2);
context.append("g")
.attr("class", "brush")
.call(brush)
.call(brush.move, x.range());
function brushed() {
if (d3.event.sourceEvent && d3.event.sourceEvent.type === "zoom") return; // ignore brush-by-zoom
var s = d3.event.selection
x.domain(s.map(Ctx.invert, Ctx));
let max = 0, min = 0, valueX =0,valueY=0;
series.map((stack, i) => {
stack.filter(el => el.data.Date >= x.domain()[0] && el.data.Date <= x.domain()[1])
.forEach(el => {
valueX = Math.max(valueX,y(el.data["Buy"]))
valueY = Math.min(valueY,y(el.data["Buy"]))
max = Math.max(max, el.data["Buy"])
min = Math.min(min, el.data["Sell"])
});
});
valueY= Math.abs(valueY)
value = valueX > valueY ? valueX : valueY;
value = Math.floor(value)
y.domain([min,max])
var tran = svg.transition().duration(350);
if ((s[1]-s[0])>10)
{
focus.selectAll(".bar")
.transition().duration(200)
.attr("x", function(d) { return x(d.data["Date"])})
.attr("y", function(d) { return y(d[1])})
.attr("width",20)
.attr("height", function(d) {
return (y(d[0]) - y(d[1]))});
focus.select(".x-axis").transition(tran).call(xAxis);
focus.select(".axis--y").transition(tran).call(yAxis);
svg.select(".zoom")
.call(zoom.transform, d3.zoomIdentity.scale(width / (s[1] - s[0])).translate(-s[0], 0));
}
}
function zoomed() {
if (d3.event.sourceEvent && d3.event.sourceEvent.type === "brush") return; // ignore zoom-by-brush
var t = d3.event.transform;
x.domain(t.rescaleX(Ctx).domain());
var previousy = y.domain()
let max = 0, min = 0,valueX=0,valueY=0;
series.map((stack, i) => {
stack.filter(el => el.data.Date >= x.domain()[0] && el.data.Date <= x.domain()[1])
.forEach(el => {
max = Math.max(max, el.data["Buy"])
min = Math.min(min, el.data["Sell"])
});
});
var tran = svg.transition().duration(350);
y.domain([min,max])
focus.selectAll(".bar")
.transition().duration(200)
.attr("x", function(d) { return x(d.data["Date"])})
.attr("y", function(d) { return y(d[1])})
.attr("width",20)
.attr("height", function(d) { return (y(d[0]) - y(d[1]))});
focus.select(".x-axis").transition(tran).call(xAxis)
focus.select(".axis--y").transition(tran).call(yAxis);
context.select(".brush").call(brush.move, x.range().map(t.invertX, t))
};
</script>

Your problem is in this code:
...
.on("click",function (d, i, elements) {
if(toggleSelected == true) {
d3.selectAll(`.bar:not(.bar-${i})`)
.style("opacity",0.2)
toggleSelected = false;
} else {
d3.selectAll(`.bar`)
.style("opacity",1)
toggleSelected = true;
}
})
...
When you click on orange rect, argument i it is the length of all blue rects + index of clicked orange rect.
You can get appropriate index, for example, from class attribute this way:
.on("click",function (d, i, elements) {
var index = parseInt(this.getAttribute('class').replace('bar bar-', ''), 10);
if(toggleSelected == true) {
d3.selectAll(`.bar:not(.bar-${index})`)
.style("opacity",0.2)
toggleSelected = false;
} else {
d3.selectAll(`.bar`)
.style("opacity",1)
toggleSelected = true;
}
})
Absolutely the same problem for mouseover and mouseout event-handlers. Look at my fork of your fiddle - https://jsfiddle.net/tcg3r04f/3/

Related

D3 graph tooltip should show nearest point on hover

I have made a graph using D3 but the problem is that I want its tooltip to appear on the graph as per nearest mouse point over in the graph. I have also seen one example on StackOverflow here on this link - D3: Get nearest value from ordinal axis on mouseover. Which is doing the exact what I want but when I implemented the same code on my graph then it is not working. Please take a look at my code and suggest me changes.
IMPORTANT!: I also want when someone double click on the graph then tooltip x'axis & y'axis coordinated stay there. Your valuable time is highly appreciated. Please Help!!!
<div id='chartdiv'></div>
<script src="https://d3js.org/d3.v5.min.js"></script>
<script>
function getData(){
data1 = [{x:1,y:15},{x:2,y:26},{x:3,y:17},{x:4,y:21},];
return data1};
function drawChart(data) {
var coreheight = 720
var corewidth = 1280
var margin = {top: 10, right: 30, bottom: 100, left: 60}
, width = corewidth - margin.left - margin.right
, height = coreheight - margin.top - margin.bottom;
var xExtent = d3.extent(data, function(d) { return d.x; }),
xRange = xExtent[1] - xExtent[0],
yExtent = d3.extent(data, function(d) { return d.y; }).reverse(),
yRange = yExtent[1] - yExtent[0];
var xScale = d3.scaleLinear().range([50, width]).domain([xExtent[0] - (xRange * .05), xExtent[1] + (xRange * .05)]);;
var yScale = d3.scaleLinear().range([0, height]).domain([yExtent[0] - (yRange * .1), yExtent[1] + (yRange * .05)]);;
var line = d3.line()
.x(function(d, x) { return xScale(d.x); })
.y(function(d, y) { return yScale(d.y); })
.curve(d3.curveMonotoneX);
d3.select('#chartdiv')
.append('svg')
.attr('class','graph')
.style('background-color','#fff')
.attr("viewBox", "0 0 "+ corewidth +" "+ coreheight +"");
var svg = d3.select(".graph")
.append("g")
.attr("class", "dchart")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
svg.append("g")
.attr("class", "y axis")
.call(d3.axisLeft(yScale).ticks(7))
.attr("transform", "translate(50, 0)")
.attr('font-size','25px');
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(xScale).ticks(7))
.attr('font-size','25px');
svg.append("path")
.datum(data)
.attr("class", "line")
.attr("d", line);
svg.selectAll(".dot")
.data(data)
.enter()
.append("circle")
.attr("class", "dot")
.attr("cx", function(d) { return xScale(d.x) })
.attr("cy", function(d) { return yScale(d.y) })
.attr("r", 8)
.on("mouseover", mousehover)
.on("mouseout", mousehoverout)
function mousehover(d) {
svg.append("text")
.attr('class','annot')
.attr('x', xScale(d.x) - 20)
.attr('y', yScale(d.y) - 23)
.text(d.x+','+d.y)
.style('font-size','30px')
svg.append('line')
.attr('class','annot')
.style("stroke", "black")
.attr('stroke-width','3')
.attr("x1", xScale(d.x))
.attr("y1", yScale(d.y))
.attr("x2", xScale(d.x))
.attr("y2", height);
}
function mousehoverout() {
d3.selectAll('.annot').remove()
}
}drawChart(getData());
</script>
<style>
.line {fill: none;stroke: darkblue;stroke-width: 3}
.dot {fill: darkblue;stroke-width:0}
</style>

You need to track where the mouse is on the chart, you're currently only checking if the mouse is hovering on a dot.
I've added a couple of event handlers to the entire chart:
.on("mousemove", mousemove)
.on("mouseout", mousehoverout);
One you have already implemented, mousehoverout, and the other, mousemove, which tracks where the mouse is relative to the points.
var lastIndex = -1;
function mousemove()
{
let x = d3.mouse(this)[0];
let closest = data.reduce((best, value, i) =>
{
let absx = Math.abs(xScale(value.x) - x)
if(absx < best.value)
{
return {index: i, value:absx};
}
else
{
return best;
}
}, {index:0, value:Number.MAX_SAFE_INTEGER});
if(lastIndex != closest.index)
{
d3.selectAll('.annot').remove();
lastIndex = closest.index;
}
mousehover(data[closest.index]);
}
Then to add the double click functionality, you can do as you have shown in the w3schools link, but add the handler to the chart:
.on('dblclick', function(){/* your code in here */});
function getData(){
data1 = [{x:1,y:15},{x:2,y:26},{x:3,y:17},{x:4,y:21},];
return data1};
function drawChart(data) {
var coreheight = 720
var corewidth = 1280
var margin = {top: 10, right: 30, bottom: 100, left: 60}
, width = corewidth - margin.left - margin.right
, height = coreheight - margin.top - margin.bottom;
var xExtent = d3.extent(data, function(d) { return d.x; }),
xRange = xExtent[1] - xExtent[0],
yExtent = d3.extent(data, function(d) { return d.y; }).reverse(),
yRange = yExtent[1] - yExtent[0];
var xScale = d3.scaleLinear().range([50, width]).domain([xExtent[0] - (xRange * .05), xExtent[1] + (xRange * .05)]);;
var yScale = d3.scaleLinear().range([0, height]).domain([yExtent[0] - (yRange * .1), yExtent[1] + (yRange * .05)]);;
var line = d3.line()
.x(function(d, x) { return xScale(d.x); })
.y(function(d, y) { return yScale(d.y); })
.curve(d3.curveMonotoneX);
d3.select('#chartdiv')
.append('svg')
.attr('class','graph')
.style('background-color','#fff')
.attr("viewBox", "0 0 "+ corewidth +" "+ coreheight +"")
.on('dblclick', function(){if(lastIndex > -1) { createpeak(data[lastIndex]); } })
.on("mousemove", mousemove)
.on("mouseout", mousehoverout);
var svg = d3.select(".graph")
.append("g")
.attr("class", "dchart")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
svg.append("g")
.attr("class", "y axis")
.call(d3.axisLeft(yScale).ticks(7))
.attr("transform", "translate(50, 0)")
.attr('font-size','25px');
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(xScale).ticks(7))
.attr('font-size','25px');
svg.append("path")
.datum(data)
.attr("class", "line")
.attr("d", line);
svg.selectAll(".dot")
.data(data)
.enter()
.append("circle")
.attr("class", "dot")
.attr("cx", function(d) { return xScale(d.x) })
.attr("cy", function(d) { return yScale(d.y) })
.attr("r", 8);
var lastIndex = -1;
function mousemove()
{
let x = d3.mouse(this)[0];
let closest = data.reduce((best, value, i) =>
{
let absx = Math.abs(xScale(value.x) - x)
if(absx < best.value)
{
return {index: i, value:absx};
}
else
{
return best;
}
}, {index:0, value:Number.MAX_SAFE_INTEGER});
d3.selectAll('.annot').remove();
lastIndex = closest.index;
mousehover(data[closest.index]);
}
function mousehover(d) {
svg.append("text")
.attr('class','annot')
.attr('x', xScale(d.x) - 20)
.attr('y', yScale(d.y) - 23)
.text(d.x+','+d.y)
.style('font-size','30px')
svg.append('line')
.attr('class','annot')
.style("stroke", "black")
.attr('stroke-width','3')
.attr("x1", xScale(d.x))
.attr("y1", yScale(d.y))
.attr("x2", xScale(d.x))
.attr("y2", height);
}
var i = 1;
var m = 1;
function createpeak(d) {
console.log('redacted');
}
function dragstarted(d,e){
d3.select(this).raise().classed("active", true);
var current = d3.select(this);
deltaX = current.attr("x") - d3.event.x;
deltaY = current.attr("y") - d3.event.y;
}
function dragged(d,e){
d3.select(this).attr("x",d3.event.x + deltaX)
d3.select(this).attr("y",d3.event.y + deltaY)
for (var i=1; i <= 100; i++){
d3.select('.line'+i).attr("x2", function (d) {
return d3.select('.peak'+i).attr("x") - deltaX
});
d3.select('.line'+i).attr("y2", function (d) {
return d3.select('.peak'+i).attr("y") - deltaY
})}}
function dragended(d,e){}
function mousehoverout() {
}
}drawChart(getData());
.line {fill: none;stroke: darkblue;stroke-width: 3}
.dot {fill: darkblue;stroke-width:0}
<div id='chartdiv'></div>
<script src="https://d3js.org/d3.v5.min.js"></script>

Data driven(D3.js) vertical grouped bar chart with tooltip, clickable legends and brush facilities

I want to build a chart using D3.js using vertical bar chart on provided data and selected filters.
Vertical grouped bar chart
Legends
Tooltip
Brush and zoom
Drill down
I have already added the filter for legends and tooltip, but facing issues while adding bursh. As i am new to D3, not sure what is the right way to integrate brush.
<!DOCTYPE html>
<meta charset="utf-8">
<head>
<script src="https://d3js.org/d3.v3.min.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/d3-tip/0.7.1/d3-tip.min.js'></script>
</head>
<style>
g.axis path, g.axis line {
fill: none;
stroke: black;
shape-rendering: crispEdges;
}
g.brush rect.extent {
fill-opacity: 0.2;
}
.resize path {
fill-opacity: 0.2;
}
.n {
opacity: .8;
font-size: 10px;
margin-left: 4px;
font-family: sans-serif;
color: white;
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background-color: #3C3176;
}
</style>
<body>
<style>
.axis .domain {
display: none;
}
</style>
<svg width="960" height="500"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
var svg = d3.select("svg"),
margin = {top: 20, right: 20, bottom: 30, left: 40},
width = +svg.attr("width") - margin.left - margin.right,
height = +svg.attr("height") - margin.top - margin.bottom,
g = svg.append("g").attr("transform", "translate(" + margin.left + "," + margin.top + ")");
// The scale spacing the groups:
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d3.csv("data.csv", function(d, i, columns) {
for (var i = 1, n = columns.length; i < n; ++i) d[columns[i]] = +d[columns[i]];
return d;
}, function(error, data) {
if (error) throw error;
var keys = data.columns.slice(1);
const tip = d3.tip().html(d=> d.value);
svg.call(tip);
x0.domain(data.map(function(d) { return d.State; }));
x1.domain(keys).rangeRound([0, x0.bandwidth()]);
y.domain([0, d3.max(data, function(d) { return d3.max(keys, function(key) { return d[key]; }); })]).nice();
g.append("g")
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.data(data)
.enter().append("g")
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.attr("transform", function(d) { return "translate(" + x0(d.State) + ",0)"; })
.selectAll("rect")
.data(function(d) { return keys.map(function(key) { return {key: key, value: d[key]}; }); })
.enter().append("rect")
.attr("x", function(d) { return x1(d.key); })
.attr("y", function(d) { return y(d.value); })
.attr("width", x1.bandwidth())
.attr("height", function(d) { return height - y(d.value); })
.attr("fill", function(d) { return z(d.key); })
.on('mouseover', tip.show)
.on('mouseout', tip.hide);
g.append("g")
.attr("class", "axis")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x0));
g.append("g")
.attr("class", "y axis")
.call(d3.axisLeft(y).ticks(null, "s"))
.append("text")
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.attr("y", y(y.ticks().pop()) + 0.5)
.attr("dy", "0.32em")
.attr("fill", "#000")
.attr("font-weight", "bold")
.attr("text-anchor", "start")
.text("Population");
// Initialize brush component
d3.brushX()
.handleSize(10)
.extent([10, 0], [g.width, g.height]);
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svg.append("g")
.attr("class", "brush")
.call(d3.brush);
var legend = g.append("g")
.attr("font-family", "sans-serif")
.attr("font-size", 10)
.attr("text-anchor", "end")
.selectAll("g")
.data(keys.slice().reverse())
.enter().append("g")
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
legend.append("rect")
.attr("x", width - 17)
.attr("width", 15)
.attr("height", 15)
.attr("fill", z)
.attr("stroke", z)
.attr("stroke-width",2)
.on("click",function(d) { update(d) });
legend.append("text")
.attr("x", width - 24)
.attr("y", 9.5)
.attr("dy", "0.32em")
.text(function(d) { return d; });
var filtered = [];
////
//// Update and transition on click:
////
function update(d) {
//
// Update the array to filter the chart by:
//
// add the clicked key if not included:
if (filtered.indexOf(d) == -1) {
filtered.push(d);
// if all bars are un-checked, reset:
if(filtered.length == keys.length) filtered = [];
}
// otherwise remove it:
else {
filtered.splice(filtered.indexOf(d), 1);
}
//
// Update the scales for each group(/states)'s items:
//
var newKeys = [];
keys.forEach(function(d) {
if (filtered.indexOf(d) == -1 ) {
newKeys.push(d);
}
})
x1.domain(newKeys).rangeRound([0, x0.bandwidth()]);
y.domain([0, d3.max(data, function(d) { return d3.max(keys, function(key) { if (filtered.indexOf(key) == -1) return d[key]; }); })]).nice();
// update the y axis:
svg.select(".y")
.transition()
.call(d3.axisLeft(y).ticks(null, "s"))
.duration(500);
//
// Filter out the bands that need to be hidden:
//
var bars = svg.selectAll(".bar").selectAll("rect")
.data(function(d) { return keys.map(function(key) { return {key: key, value: d[key]}; }); })
bars.filter(function(d) {
return filtered.indexOf(d.key) > -1;
})
.transition()
.attr("x", function(d) {
return (+d3.select(this).attr("x")) + (+d3.select(this).attr("width"))/2;
})
.attr("height",0)
.attr("width",0)
.attr("y", function(d) { return height; })
.duration(500);
//
// Adjust the remaining bars:
//
bars.filter(function(d) {
return filtered.indexOf(d.key) == -1;
})
.transition()
.attr("x", function(d) { return x1(d.key); })
.attr("y", function(d) { return y(d.value); })
.attr("height", function(d) { return height - y(d.value); })
.attr("width", x1.bandwidth())
.attr("fill", function(d) { return z(d.key); })
.duration(500);
// update legend:
legend.selectAll("rect")
.transition()
.attr("fill",function(d) {
if (filtered.length) {
if (filtered.indexOf(d) == -1) {
return z(d);
}
else {
return "white";
}
}
else {
return z(d);
}
})
.duration(100);
}
});
</script>
State,Under 5 Years,5 to 13 Years,14 to 17 Years,18 to 24 Years,25 to 44 Years,45 to 64 Years,65 Years and Over
CA,2704659,4499890,2159981,3853788,10604510,8819342,4114496
TX,2027307,3277946,1420518,2454721,7017731,5656528,2472223
NY,1208495,2141490,1058031,1999120,5355235,5120254,2607672
FL,1140516,1938695,925060,1607297,4782119,4746856,3187797
IL,894368,1558919,725973,1311479,3596343,3239173,1575308
PA,737462,1345341,679201,1203944,3157759,3414001,1910571

d3.on("mouseover") occurring before mouseover

This is a d3 bar chart. line 162 ,
.on("mouseover", console.log("I am on it"))
should only happen when user is over a bar on the bar chart, but the log is output from the time the page loads.
The running code is here, https://shanegibney.github.io/d3Mouseover/
The full code is here, https://github.com/shanegibney/d3Mouseover
<!DOCTYPE html>
<meta charset="utf-8">
<style type="text/css">
body {
font-family: avenir next, sans-serif;
font-size: 12px;
}
.zoom {
cursor: move;
fill: none;
pointer-events: all;
}
.axis {
stroke-width: 0.5px;
stroke: #888;
font: 10px avenir next, sans-serif;
}
.axis>path {
stroke: #888;
}
</style>
<body>
<div id="totalDistance">
</div>
</body>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
/* Adapted from: https://bl.ocks.org/mbostock/34f08d5e11952a80609169b7917d4172 */
var margin = {
top: 20,
right: 20,
bottom: 90,
left: 50
},
margin2 = {
top: 230,
right: 20,
bottom: 30,
left: 50
},
width = 960 - margin.left - margin.right,
height = 300 - margin.top - margin.bottom,
height2 = 300 - margin2.top - margin2.bottom;
var parseTime = d3.timeParse("%Y-%m-%d %H:%M");
var x = d3.scaleTime().range([0, width]),
x2 = d3.scaleTime().range([0, width]),
y = d3.scaleLinear().range([height, 0]),
y2 = d3.scaleLinear().range([height2, 0]),
dur = d3.scaleLinear().range([0, 12]);
var xAxis = d3.axisBottom(x).tickSize(0),
xAxis2 = d3.axisBottom(x2).tickSize(0),
yAxis = d3.axisLeft(y).tickSize(0);
var brush = d3.brushX()
.extent([
[0, 0],
[width, height2]
])
.on("start brush end", brushed);
var zoom = d3.zoom()
.scaleExtent([1, Infinity])
.translateExtent([
[0, 0],
[width, height]
])
.extent([
[0, 0],
[width, height]
])
.on("zoom", zoomed);
var svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom);
svg.append("defs").append("clipPath")
.attr("id", "clip")
.append("rect")
.attr("width", width)
.attr("height", height);
var focus = svg.append("g")
.attr("class", "focus")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var context = svg.append("g")
.attr("class", "context")
.attr("transform", "translate(" + margin2.left + "," + margin2.top + ")");
d3.json("dataDefault.json", function(error, data) {
if (error) throw error;
var parseTime = d3.timeParse("%Y-%m-%d %H:%M");
var mouseoverTime = d3.timeFormat("%a %e %b %Y %H:%M");
var minTime = d3.timeFormat("%b%e, %Y");
var parseDate = d3.timeParse("%b %Y");
data.forEach(function(d) {
d.mouseoverDisplay = parseTime(d.date);
d.date = parseTime(d.date);
d.end = parseTime(d.end);
d.duration = ((d.end - d.date) / (60 * 1000)); // session duration in minutes
d.distance = +d.distance;
d.intensityInverted = (1 / (d.distance / d.duration)); // inverse of intensity so that the light colour is for low intensity and dark colour is for high intensity
d.intensity = Math.round(d.distance / d.duration); // actually intensity, metres per minute.
d.course = d.course.toLowerCase();
return d;
},
function(error, data) {
if (error) throw error;
});
var total = 0;
data.forEach(function(d) {
total = d.distance + total;
});
var minDate = d3.min(data, function(d) {
return d.date;
});
total = String(total).replace(/(.)(?=(\d{3})+$)/g, '$1,') //place thousands comma in total distance string
var xMin = d3.min(data, function(d) {
return d.date;
});
var yMax = Math.max(20, d3.max(data, function(d) {
return d.distance;
}));
dur.domain([0, d3.max(data, function(d) {
return d.duration;
})]);
var colorScale = d3.scaleSequential(d3.interpolateInferno)
.domain([0, d3.max(data, function(d) {
return d.intensityInverted;
})]);
var totalDistance = d3.select("#totalDistance").append("p").text("Total distance: " + total + "m");
x.domain([xMin, new Date()]);
y.domain([0, yMax]);
x2.domain(x.domain());
y2.domain(y.domain());
// append scatter plot to main chart area
var messages = focus.append("g");
messages.attr("clip-path", "url(#clip)");
messages.selectAll("message")
.data(data)
.enter().append("rect")
.style("fill", function(d) {
return colorScale(d.intensityInverted);
})
.attr("class", "message")
.attr("x", function(d) {
return x(d.date);
})
.attr("y", function(d) {
return y(d.distance);
})
.attr("width", function(d) {
return dur(d.duration);
})
.attr("height", function(d) {
return height - y(d.distance);
})
// .on("mouseover", onit);
.on("mouseover", () => console.log("I am now on it for sure!"));
// function onit(d) {
// console.log("I am on it now!")
// }
focus.append("g")
.attr("class", "axis x-axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
focus.append("g")
.attr("class", "axis axis--y")
.call(yAxis);
// Summary Stats
focus.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 0 - margin.left)
.attr("x", 0 - (height / 2))
.attr("dy", "1em")
.style("text-anchor", "middle")
.text("Distance in meters");
// focus.append("text")
// .attr("x", width - margin.right)
// .attr("dy", "1em")
// .attr("text-anchor", "end")
// // .text("Messages: " + num_messages(data, x));
// .text("Total distance: " + total + "m");
svg.append("text")
.attr("transform",
"translate(" + ((width + margin.right + margin.left) / 2) + " ," +
(height + margin.top + margin.bottom) + ")")
.style("text-anchor", "middle")
.text("Date");
svg.append("rect")
.attr("class", "zoom")
.attr("width", width)
.attr("height", height)
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.call(zoom);
// append scatter plot to brush chart area
var messages = context.append("g");
messages.attr("clip-path", "url(#clip)");
messages.selectAll("message")
.data(data)
.enter().append("rect")
.style("fill", function(d) {
return colorScale(d.intensityInverted);
})
.attr("class", "message")
.attr("x", function(d) {
return x2(d.date);
})
.attr("y", function(d) {
return y2(d.distance);
})
.attr("width", function(d) {
return dur(d.duration);
})
.attr("height", function(d) {
return height2 - y2(d.distance);
});
context.append("g")
.attr("class", "axis x-axis")
.attr("transform", "translate(0," + height2 + ")")
.call(xAxis2);
context.append("g")
.attr("class", "brush")
.call(brush)
.call(brush.move, x.range());
});
//create brush function redraw scatterplot with selection
function brushed() {
if (d3.event.sourceEvent && d3.event.sourceEvent.type === "zoom") return; // ignore brush-by-zoom
var s = d3.event.selection || x2.range();
x.domain(s.map(x2.invert, x2));
focus.selectAll(".message")
.attr("x", function(d) {
return x(d.date);
})
.attr("y", function(d) {
return y(d.distance);
})
.attr("width", function(d) {
return dur(d.duration);
})
.attr("height", function(d) {
return height - y(d.distance);
});
focus.select(".x-axis").call(xAxis);
svg.select(".zoom").call(zoom.transform, d3.zoomIdentity
.scale(width / (s[1] - s[0]))
.translate(-s[0], 0));
var e = d3.event.selection;
var selectedMessages = focus.selectAll('.message').filter(function() {
var xValue = this.getAttribute('x');
return e[0] <= xValue && xValue <= e[1];
});
// console.log(selectedMessages.nodes().length);
}
function zoomed() {
if (d3.event.sourceEvent && d3.event.sourceEvent.type === "brush") return; // ignore zoom-by-brush
var t = d3.event.transform;
x.domain(t.rescaleX(x2).domain());
focus.selectAll(".message")
// .enter().append("rect")
// .style("fill", function(d) {
// return colorScale(d.intensityInverted);
// })
// .attr("class", "message")
.attr("x", function(d) {
return x(d.date);
})
.attr("y", function(d) {
return y(d.distance);
})
.attr("width", function(d) {
return dur(d.duration);
})
.attr("height", function(d) {
return height - y(d.distance);
});
focus.select(".x-axis").call(xAxis);
context.select(".brush").call(brush.move, x.range().map(t.invertX, t));
}
function handleMouseOver(d) {
d3.select(this)
.style("fill", "lightBlue");
g.select('text')
.attr("x", 15)
.attr("y", 5)
.text("Session no. " + d.number)
.append('tspan')
.text("Date: " + mouseoverTime(d.mouseoverDisplay))
.attr("x", 15)
.attr("y", 30)
.append('tspan')
.text("Distance: " + d.distance + "m")
.attr("x", 15)
.attr("y", 50)
.append('tspan')
.text("Duration: " + d.duration + " mins")
.attr("x", 15)
.attr("y", 70)
.append('tspan')
.text("Intensity: " + d.intensity + " meters/mins")
.attr("x", 15)
.attr("y", 90)
.append('tspan')
.text("Pool: " + d.pool + " (" + d.course + ")")
.attr("x", 15)
.attr("y", 110);
console.log("handleMouseOver function");
}
function handleMouseOut(d) {
d3.select(this)
.style("fill", function(d) {
return colorScale(d.intensityInverted);
});
g.select('text').text("Total distance since " + minTime(minDate) + ": " + total + "m");
}
</script>
Sample data,
[{
"number": "1",
"date": "2016-11-09 11:15",
"end": "2016-11-09 11:45",
"distance": "1100",
"course": "LC",
"pool": "UCD"
},
{
"number": "2",
"date": "2016-11-10 10:40",
"end": "2016-11-10 11:20",
"distance": "1500",
"course": "LC",
"pool": "UCD"
},
{
"number": "3",
"date": "2016-11-11 16:45",
"end": "2016-11-11 17:50",
"distance": "2000",
"course": "LC",
"pool": "UCD"
},
{
"number": "4",
"date": "2016-11-12 12:48",
"end": "2016-11-12 13:53",
"distance": "2500",
"course": "LC",
"pool": "UCD"
}
]
I added the last two lines here, but still no luck,
var messages = focus.append("g");
messages.attr("clip-path", "url(#clip)");
messages.selectAll("message")
.data(data)
.enter().append("rect")
.style("fill", function(d) {
return colorScale(d.intensityInverted);
})
.attr("class", "message")
.attr("x", function(d) {
return x(d.date);
})
.attr("y", function(d) {
return y(d.distance);
})
.attr("width", function(d) {
return dur(d.duration);
})
.attr("height", function(d) {
return height - y(d.distance);
})
// .on("mouseover", onit);
.on("mouseover", () => console.log("I am now on it for sure!"));
// function onit(d) {
// console.log("I am on it now!")
// }
I suspect the problem is because I am using brushX() and zoom.

When you do this:
.on("mouseover", console.log("I am on it"))
You're passing the result of the console.log function to the callback. Instead of that, you want to pass its reference:
.on("mouseover", function(){
console.log("I am on it")
})
Check this snippet (don't hover over the circle!):
var circle = d3.select("circle");
circle.on("mouseover", console.log("I'm on it!"));
<script src="https://d3js.org/d3.v4.min.js"></script>
<svg>
<circle cx="50" cy="50" r="15" fill="teal"></circle>
</svg>
Now the same code, with the reference to console.log:
var circle = d3.select("circle");
circle.on("mouseover", () => console.log("I'm on it!"));
<script src="https://d3js.org/d3.v4.min.js"></script>
<svg>
<circle cx="50" cy="50" r="15" fill="teal"></circle>
</svg>

The issue is that you are calling the function at the time you are declaring it:
.on("mouseover", console.log("I am on it")) //function call
should be something like this:
.on("mouseover", console.log) //function ref
.on("mouseover", function(d) { console.log("I am on it") }) //function ref

Handle with d3.json

I'm trying to make a d3 scatterplot recurring to json data. I know that d3 has d3.json to load json data but my code isn't working. I'm not that good dealing with js (it's my first time with this language), that's why I need help in this.
Basically, I need to plot this data (date in xAxis and IADP_mGycm2 in yAxis):
[
{
"imageID": 1,
"value": 288.3,
"date": "2015-10-22"
},
{
"imageID": 2,
"value": 188.1,
"date": "2015-10-22"
}
]
JS:
var margin = { top: 50, right: 300, bottom: 50, left: 50 },
outerWidth = 1050,
outerHeight = 500,
width = outerWidth - margin.left - margin.right,
height = outerHeight - margin.top - margin.bottom;
var x = d3.scale.linear()
.range([0, width]).nice();
var y = d3.scale.linear()
.range([height, 0]).nice();
var xCat = "date",
yCat = "value";
d3.json("CR.json", function(error, rawData) {
if (error) {
console.error(error);
return;
}
var data = rawData.map(function (d) {
return {
date: d.date,
value: d.value
}
});
var xMax = d3.max(data, function(d) { return d["date"]; }),
xMin = d3.min(data, function(d) { return d["date"]; }),
xMin = xMin > 0 ? 0 : xMin,
yMax = d3.max(data, function(d) { return d["value"]; }) ,
yMin = d3.min(data, function(d) { return d["value"]; }),
yMin = yMin > 0 ? 0 : yMin;
x.domain([xMin, xMax]);
y.domain([yMin, yMax]);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.tickSize(-height);
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.tickSize(-width);
var color = d3.scale.category10();
var tip = d3.tip()
.attr("class", "d3-tip")
.offset([-10, 0])
.html(function(d) {
return xCat + ": " + d["date"] + "<br>" + yCat + ": " + d["value"];
});
var zoomBeh = d3.behavior.zoom()
.x(x)
.y(y)
.scaleExtent([0, 500])
.on("zoom", zoom);
var svg = d3.select("#scatter")
.append("svg")
.attr("width", outerWidth)
.attr("height", outerHeight)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.call(zoomBeh);
svg.call(tip);
svg.append("rect")
.attr("width", width)
.attr("height", height);
svg.append("g")
.classed("x axis", true)
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.append("text")
.classed("label", true)
.attr("x", width)
.attr("y", margin.bottom - 10)
.style("text-anchor", "end")
.text(xCat);
svg.append("g")
.classed("y axis", true)
.call(yAxis)
.append("text")
.classed("label", true)
.attr("transform", "rotate(-90)")
.attr("y", -margin.left)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text(yCat);
var objects = svg.append("svg")
.classed("objects", true)
.attr("width", width)
.attr("height", height);
objects.append("svg:line")
.classed("axisLine hAxisLine", true)
.attr("x1", 0)
.attr("y1", 0)
.attr("x2", width)
.attr("y2", 0)
.attr("transform", "translate(0," + height + ")");
objects.append("svg:line")
.classed("axisLine vAxisLine", true)
.attr("x1", 0)
.attr("y1", 0)
.attr("x2", 0)
.attr("y2", height);
objects.selectAll(".dot")
.data(data)
.enter().append("circle")
.classed("dot", true)
.attr("cy", function (d) { return d.value; })
.attr("cx", function (d) { return d.date; })
.attr("transform", transform)
.style("fill", "red")
.on("mouseover", tip.show)
.on("mouseout", tip.hide);
var legend = svg.selectAll(".legend")
.data(color.domain())
.enter().append("g")
.classed("legend", true)
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
legend.append("circle")
.attr("r", 3.5)
.attr("cx", width + 20)
.attr("fill", color);
legend.append("text")
.attr("x", width + 26)
.attr("dy", ".35em")
.text(function(d) { return d; });
d3.select("input").on("click", change);
function change() {
xCat = "date";
xMax = d3.max(data, function(d) { return d["date"]; });
xMin = d3.min(data, function(d) { return d["date"]; });
zoomBeh.x(x.domain([xMin, xMax])).y(y.domain([yMin, yMax]));
var svg = d3.select("#scatter").transition();
svg.select(".x.axis").duration(750).call(xAxis).select(".label").text("date");
objects.selectAll(".dot").transition().duration(1000).attr("transform", transform);
}
function zoom() {
svg.select(".x.axis").call(xAxis);
svg.select(".y.axis").call(yAxis);
svg.selectAll(".dot")
.attr("transform", transform);
}
function transform(d) {
return "translate(" + x(d["date"]) + "," + y(d["value"]) + ")";
}
});
HTML:
<html>
<head>
<meta charset="utf-8">
<title>Visualization</title>
<link rel="stylesheet" href="scatter.css" charset="utf-8">
</head>
<body>
<div id="scatter"></div>
<input type="button" name="xAxis" value="xAxis">
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script src="http://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js"></script>
<script src="scatter.js" charset="utf-8"></script>
</body>
</html>
CSS:
rect {
fill: transparent;
shape-rendering: crispEdges;
}
.axis path,
.axis line {
fill: none;
stroke: rgba(0, 0, 0, 0.1);
shape-rendering: crispEdges;
}
.axisLine {
fill: none;
shape-rendering: crispEdges;
stroke: rgba(0, 0, 0, 0.5);
stroke-width: 2px;
}
.dot {
fill-opacity: .5;
}
.d3-tip {
line-height: 1;
font-weight: bold;
padding: 12px;
background: rgba(0, 0, 0, 0.8);
color: #fff;
border-radius: 2px;
}
/* Creates a small triangle extender for the tooltip */
.d3-tip:after {
box-sizing: border-box;
display: inline;
font-size: 10px;
width: 100%;
line-height: 1;
color: rgba(0, 0, 0, 0.8);
content: "\25BC";
position: absolute;
text-align: center;
}
/* Style northward tooltips differently */
.d3-tip.n:after {
margin: -1px 0 0 0;
top: 100%;
left: 0;
}
Thanks in advance!

One issue I see is that you're missing a }) at the end of this code chunk:
var data = rawData.map(function (d) {
return {
date: d.date,
IADP_mGycm2: d.IADP_mGycm2
};
Try changing it to this:
var data = rawData.map(function (d) {
return {
date: d.date,
IADP_mGycm2: d.IADP_mGycm2
}
});
It also helps in debugging if you include the specific error message you're getting.

Well, you define xCat as:
var xCat = "Date"
but your mapping function uses:
date: d.date
so, when you reference d[xCat] what you are getting is d.Date (which is undefined and would cause NaN) instead of d.date. That's all I can see with a quick look through.
You can fix this by using d['date'] or d.date instead of d[xCat].

Ok, after looking a little further at this, I've identified a couple of problems. The main issue is that the chart you are trying to emulate has numeric values on both the x and y axes. However, you are trying to use dates. In order to do that, you have to use d3.time.scale() for the x-axis instead of a linear scale. You also have to transform the date strings from your data to date objects and use your time scale to scale your x-axis values. Here is scatter.js with the changes:
var margin = { top: 50, right: 300, bottom: 50, left: 50 },
outerWidth = 1050,
outerHeight = 500,
width = outerWidth - margin.left - margin.right,
height = outerHeight - margin.top - margin.bottom;
// Use a time scale for the x-axis
var x = d3.time.scale()
.range([0, width]).nice();
var y = d3.scale.linear()
.range([height, 0]).nice();
var xCat = "date",
yCat = "Dose";
d3.json("CR.json", function(error, rawData) {
if (error) {
console.error(error);
return;
}
var data = rawData.map(function(d) {
return {
// Create date objects, not strings
date: new Date(d.date),
IADP_mGycm2: d.IADP_mGycm2
}
});
var xMax = d3.max(data, function(d) { return d["date"]; }),
xMin = d3.min(data, function(d) { return d["date"]; }),
//xMin = xMin > 0 ? 0 : xMin,
yMax = d3.max(data, function(d) { return d["IADP_mGycm2"]; }),
yMin = d3.min(data, function(d) { return d["IADP_mGycm2"]; });
//yMin = yMin > 0 ? 0 : yMin;
x.domain([xMin, xMax]);
y.domain([yMin, yMax]);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.tickSize(-height);
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.tickSize(-width);
var color = d3.scale.category10();
var tip = d3.tip()
.attr("class", "d3-tip")
.offset([-10, 0])
.html(function(d) {
return xCat + ": " + d["date"] + "<br>" + yCat + ": " + d["IADP_mGycm2"];
});
var zoomBeh = d3.behavior.zoom()
.x(x)
.y(y)
.scaleExtent([0, 500])
.on("zoom", zoom);
var svg = d3.select("#scatter")
.append("svg")
.attr("width", outerWidth)
.attr("height", outerHeight)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.call(zoomBeh);
svg.call(tip);
svg.append("rect")
.attr("width", width)
.attr("height", height);
svg.append("g")
.classed("x axis", true)
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.append("text")
.classed("label", true)
.attr("x", width)
.attr("y", margin.bottom - 10)
.style("text-anchor", "end")
.text(xCat);
svg.append("g")
.classed("y axis", true)
.call(yAxis)
.append("text")
.classed("label", true)
.attr("transform", "rotate(-90)")
.attr("y", -margin.left)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text(yCat);
var objects = svg.append("svg")
.classed("objects", true)
.attr("width", width)
.attr("height", height);
objects.append("svg:line")
.classed("axisLine hAxisLine", true)
.attr("x1", 0)
.attr("y1", 0)
.attr("x2", width)
.attr("y2", 0)
.attr("transform", "translate(0," + height + ")");
objects.append("svg:line")
.classed("axisLine vAxisLine", true)
.attr("x1", 0)
.attr("y1", 0)
.attr("x2", 0)
.attr("y2", height);
objects.selectAll(".dot")
.data(data)
.enter().append("circle")
.classed("dot", true)
.attr("cy", function(d) { return d.IADP_mGycm2; })
// Use the time scale to scale the values for the x-axis
.attr("cx", function(d) { return x(d.date); })
.attr("transform", transform)
.style("fill", "red")
.on("mouseover", tip.show)
.on("mouseout", tip.hide);
var legend = svg.selectAll(".legend")
.data(color.domain())
.enter().append("g")
.classed("legend", true)
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
legend.append("circle")
.attr("r", 3.5)
.attr("cx", width + 20)
.attr("fill", color);
legend.append("text")
.attr("x", width + 26)
.attr("dy", ".35em")
.text(function(d) { return d; });
d3.select("input").on("click", change);
function change() {
xCat = "date";
xMax = d3.max(data, function(d) { return d["date"]; });
xMin = d3.min(data, function(d) { return d["date"]; });
zoomBeh.x(x.domain([xMin, xMax])).y(y.domain([yMin, yMax]));
var svg = d3.select("#scatter").transition();
svg.select(".x.axis").duration(750).call(xAxis).select(".label").text("date");
objects.selectAll(".dot").transition().duration(1000).attr("transform", transform);
}
function zoom() {
svg.select(".x.axis").call(xAxis);
svg.select(".y.axis").call(yAxis);
svg.selectAll(".dot")
.attr("transform", transform);
}
function transform(d) {
return "translate(" + x(d["date"]) + "," + y(d["IADP_mGycm2"]) + ")";
}
});
This gets rid of the errors you were seeing, but it still doesn't plot the circles correctly. Sorry, I don't have the time to work all that out. However, this should move you forward and get you closer to figuring it out yourself. To learn more about time scales, see https://github.com/mbostock/d3/wiki/Time-Scales. Also, if you really want to learn D3, I highly recommend the book D3.js in Action by Elijah Meeks. https://www.manning.com/books/d3-js-in-action. One of the better programming books I have read.

d3 - legend for parallel coordinate chart not displayed

I have a parallel coordinate chart. I want to display a legend. From the example from Bostock's website, I wrote something similar. But, I can only see the colours of the lines being shown and not the text.
The text is being returned correctly as well.
What am I performing incorrectly ?
Here is my code:
<!DOCTYPE html>
<meta charset="utf-8">
<style>
svg {
font: 10px sans-serif;
}
.background path {
fill: none;
stroke: #ddd;
shape-rendering: crispEdges;
}
.foreground path {
fill: none;
stroke: steelblue;
}
.brush .extent {
fill-opacity: .3;
stroke: #fff;
shape-rendering: crispEdges;
}
.axis line,
.axis path {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.axis text {
text-shadow: 0 1px 0 #fff, 1px 0 0 #fff, 0 -1px 0 #fff, -1px 0 0 #fff;
cursor: move;
}
.legend rect {
fill:white;
stroke:black;
opacity:0.8;}
</style>
<body>
<div style="width:1140px; height:550px;margin-left:50px;margin-top:50px;" id="chartDiv"></div>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3-legend/1.5.0/d3-legend.js"></script>
<script>
var margin = {top: 30, right: 10, bottom: 10, left: 10},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x = d3.scale.ordinal().rangePoints([0, width], 1),
y = {},
dragging = {};
var line = d3.svg.line(),
axis = d3.svg.axis().orient("left"),
background,
foreground;
var svg = d3.select("#chartDiv").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var color = d3.scale.ordinal()
.domain(['white','other','african-american','hispanic','asian/pacific islander'])
.range(['#ffae19','#4ca64c','#4682B4','#737373', '#ff4c4c']);
d3.csv("SurvivalProbability.csv", function(error, cars) {
// Extract the list of dimensions and create a scale for each.
x.domain(dimensions = d3.keys(cars[0]).filter(function(d) {
if(d === "Ethnicity") {
y[d] = d3.scale.ordinal()
.domain(cars.map(function(p) { return p[d]; }))
.rangePoints([height, 0]);
}
else if(d === "Site") {
y[d] = d3.scale.ordinal()
.domain(cars.map(function(p) { return p[d]; }))
.rangePoints([height, 0]);
}
else if(d === "Tcategory") {
y[d] = d3.scale.ordinal()
.domain(cars.map(function(p) { return p[d]; }))
.rangePoints([height, 0]);
}
else if(d === "Nodal_Disease") {
y[d] = d3.scale.ordinal()
.domain(cars.map(function(p) { return p[d]; }))
.rangePoints([height, 0]);
}
else if(d === "Chemotherapy") {
y[d] = d3.scale.ordinal()
.domain(cars.map(function(p) { return p[d]; }))
.rangePoints([height, 0]);
}
else if(d === "Local_Therapy") {
y[d] = d3.scale.ordinal()
.domain(cars.map(function(p) { return p[d]; }))
.rangePoints([height, 0]);
}
else {
y[d] = d3.scale.linear()
.domain(d3.extent(cars, function(p) { return +p[d]; }))
.range([height, 0]);
}
return true;
}));
// Add grey background lines for context.
background = svg.append("g")
.attr("class", "background")
.selectAll("path")
.data(cars)
.enter().append("path")
.attr("d", path);
// Add blue foreground lines for focus.
/*foreground = svg.append("g")
.attr("class", "foreground")
.selectAll("path")
.data(cars)
.enter().append("path")
.attr("d", path);*/
foreground = svg.append("g")
.attr("class", "foreground")
.selectAll("path")
.data(cars)
.enter().append("path")
.attr("d", path)
.style("stroke", function(d) {
return color(d.Ethnicity);
})
// Add a group element for each dimension.
var g = svg.selectAll(".dimension")
.data(dimensions)
.enter().append("g")
.attr("class", "dimension")
.attr("transform", function(d) { return "translate(" + x(d) + ")"; })
.call(d3.behavior.drag()
.origin(function(d) { return {x: x(d)}; })
.on("dragstart", function(d) {
dragging[d] = x(d);
background.attr("visibility", "hidden");
})
.on("drag", function(d) {
dragging[d] = Math.min(width, Math.max(0, d3.event.x));
foreground.attr("d", path);
dimensions.sort(function(a, b) { return position(a) - position(b); });
x.domain(dimensions);
g.attr("transform", function(d) { return "translate(" + position(d) + ")"; })
})
.on("dragend", function(d) {
delete dragging[d];
transition(d3.select(this)).attr("transform", "translate(" + x(d) + ")");
transition(foreground).attr("d", path);
background
.attr("d", path)
.transition()
.delay(500)
.duration(0)
.attr("visibility", null);
}));
// Add an axis and title.
g.append("g")
.attr("class", "axis")
.each(function(d) { d3.select(this).call(axis.scale(y[d])); })
.append("text")
.style("text-anchor", "middle")
.attr("y", -9)
.text(function(d) { return d; });
// Add and store a brush for each axis.
g.append("g")
.attr("class", "brush")
.each(function(d) {
d3.select(this).call(y[d].brush = d3.svg.brush().y(y[d]).on("brushstart", brushstart).on("brush", brush));
})
.selectAll("rect")
.attr("x", -8)
.attr("width", 16);
var legendRectSize = 10;
var legendSpacing = 100;
var legend = d3.select('svg')
.append("g")
.selectAll("g")
.data(color.domain())
.enter()
.append('g')
.attr('class', 'legend')
.attr('transform', function(d, i) {
var height = legendRectSize;
var x = 925;
var y = (i * height) + 50;
return 'translate(' + x + ',' + y + ')';
});
legend.append('rect')
.attr('width', legendRectSize)
.attr('height', legendRectSize)
.style('fill', color)
.style('stroke', color);
legend.append('text')
.attr('x', legendRectSize + legendSpacing)
.attr('y', legendRectSize - legendSpacing)
.text(function(d) { return d; });
});
function position(d) {
var v = dragging[d];
return v == null ? x(d) : v;
}
function transition(g) {
return g.transition().duration(500);
}
// Returns the path for a given data point.
function path(d) {
return line(dimensions.map(function(p) { return [position(p), y[p](d[p])]; }));
}
function brushstart() {
d3.event.sourceEvent.stopPropagation();
}
// Handles a brush event, toggling the display of foreground lines.
function brush() {
var actives = dimensions.filter(function(p) { return !y[p].brush.empty(); }),
extents = actives.map(function(p) { return y[p].brush.extent(); });
foreground.style("display", function(d) {
return actives.every(function(p, i) {
return extents[i][0] <= d[p] && d[p] <= extents[i][1];
}) ? null : "none";
});
}
</script>

The code is correct to show the legend you have to adjust the margin a little.
//rightmargin is set to 200
var margin = {top: 30, right: 200, bottom: 10, left: 10},
and width is like
width = 1100 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
Placement of the legend text as below
var legendRectSize = 10;
var legendSpacing = 10;
var legend = d3.select('svg')
.append("g")
.selectAll("g")
.data(color.domain())
.enter()
.append('g')
.attr('class', 'legend')
.attr('transform', function(d, i) {
var height = legendRectSize;
var x = 900;
var y = (i * height) + 50;
return 'translate(' + x + ',' + y + ')';
});
That all :)
Working code here
Hope this helps!

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