Can not show tooltip on a bar chart - d3js / javascript - javascript

I do not know why the tooltip does not appear. Here is my code:
// set the dimensions and margins of the graph
var margin = { top: 20, right: 30, bottom: 50, left: 90 }
var width = 460 - margin.left - margin.right
var height = 2000 - margin.top - margin.bottom;
const dataUrl = "https://raw.githubusercontent.com/yushinglui/IV/main/course_distance_v2.csv"
//fetch the data
d3.csv(dataUrl)
.then((data) => {
// append the svg object to the body of the page
var svg = d3.select("#graph-1")
.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 + ")");
// Add X axis
var x = d3.scaleLinear()
.domain([0, 60])
.range([0, width]);
svg.append("g")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x))
.selectAll("text")
.attr("transform", "translate(-10,0)rotate(-45)")
.style("text-anchor", "end");
// Y axis
var y = d3.scaleBand()
.range([0, height])
.domain(data.map(function (d) { return d.CourseCode; }))
.padding(0.1);
svg.append("g")
.call(d3.axisLeft(y))
// create tooltip element
const tooltip = d3.select("body")
.append("div")
.attr("class", "d3-tooltip")
.style("position", "absolute")
.style("z-index", "10")
.style("visibility", "hidden")
.style("padding", "15px")
.style("background", "rgba(0,0,0,0.6)")
.style("border-radius", "5px")
.style("color", "#fff")
.text("a simple tooltip");
//Bars
let bars = svg.selectAll("rect")
.data(data)
.enter()
.append("rect")
.attr("x", function (d) { return 1; })
.attr("y", function (d) { return y(d.CourseCode); })
.attr("width", function (d) { return x(d.AverageDistance); })
.attr("height", function (d) { return y.bandwidth(); })
.attr("fill", "orange");
.on("mouseover", function (d, i) {
tooltip.html(`CourseName: ${d.CourseName}`).style("visibility", "visible");
d3.select(this)
.attr("fill", "orangered");
})
.on("mousemove", function () {
tooltip
.style("top", (event.pageY - 10) + "px")
.style("left", (event.pageX + 10) + "px");
})
.on("mouseout", function () {
tooltip.html(``).style("visibility", "hidden");
d3.select(this).attr("fill", "orange");
});
//axis labels
svg.append('text')
.attr('x', -(height / 2))
.attr('y', width - 410)
.attr('transform', 'rotate(-90)')
.attr('text-anchor', 'middle')
.text('Course Code');
svg.append('text')
.attr('x', 150)
.attr('y', 1970)
.attr('transform', 'rotate()')
.attr('text-anchor', 'middle')
.text('Average Distance (Miles)');
//text labels on bars
svg.selectAll(null)
.data(data)
.enter()
.append("text")
.text(function (d) { return d.AverageDistance; })
.attr("x", function (d) { return x(d.AverageDistance) + 15; })
.attr("y", function (d) { console.log(d); return y(d.CourseCode) + y.bandwidth() * (0.5 + 0.1); })
.attr("font-family", "sans-serif")
.attr("font-size", "12px")
.attr("fill", "black")
.attr("text-anchor", "middle");
})
my reference website:
https://perials.github.io/responsive-bar-chart-with-d3/
https://observablehq.com/#bsaienko/animated-bar-chart-with-tooltip
https://blockbuilder.org/1Cr18Ni9/bfadecc96183c48d13b7b90bcf358a61
http://bl.ocks.org/katirg/5f168b5c884b1f9c36a5

Related

Focus not displaying the graph properly D3 javascript

Here is the template for my Django where I am visualizing training using D3:
.line {
fill: none;
stroke: gray;
stroke-width: 2px;
}
<meta charset="utf-8">
<body>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
var real = {{values.real0|safe}}, pred = {{values.got0|safe}};
var margin = {top: 20, right: 20, bottom: 110, left: 50},
margin2 = {top: 430, right: 20, bottom: 30, left: 40},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom,
height2 = 500 - margin2.top - margin2.bottom;
var x = d3.scaleLinear().range([0, width]).domain([0, Object.keys(real).length]),
x2 = d3.scaleLinear().range([0, width]).domain([0, Object.keys(real).length]),
y = d3.scaleLinear().range([height, 0]).domain([0, 1]),
y2 = d3.scaleLinear().range([height2, 0]).domain([0, 1]);
var xAxis = d3.axisBottom(x),
xAxis2 = d3.axisBottom(x2),
yAxis = d3.axisLeft(y);
var brush = d3.brushX()
.extent([[0, 0], [width, height2]])
.on("brush", brushed);
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 formain = d3.line()
.x(function(d,i) { return x(i); })
.y(function(d) { return y(d); });
var forbrush = d3.line()
.x(function(d,i) { return x2(i); })
.y(function(d) { return y2(d); });
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 + ")");
// Real starts
var color = d3.scaleLinear()
.domain([0, 0.5, 1])
.range(["red", "dodgerblue", "lime"]);
// x.domain(d3.extent(data, function(d) { return d.date; }));
// y.domain([0, d3.max(data, function(d) { return d.price; })+200]);
// x2.domain(x.domain());
// y2.domain(y.domain());
// append scatter plot to main chart area
var dots = focus.append("g");
dots.attr("clip-path", "url(#clip)");
dots.selectAll("dot")
.data(real)
.enter().append("circle")
.attr('class', 'dot')
.attr("r",5)
.style("opacity", .5)
.attr("cx", function(d,i) { return x(i); })
.attr("cy", function(d) { return y(d); })
.attr("fill",(function (d) { return color(d) }));
focus.append("g")
.attr("class", "axis axis--x")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
focus.append("g")
.attr("class", "axis axis--y")
.call(yAxis);
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(Object.keys({{values|safe}}));
// console.log(Object.keys({{values|safe}}));
svg.append("text")
.attr("transform",
"translate(" + ((width + margin.right + margin.left)/2) + " ," +
(height + margin.top + margin.bottom) + ")")
.style("text-anchor", "middle")
.text("index");
// append scatter plot to brush chart area
var dots = context.append("g");
dots.attr("clip-path", "url(#clip)");
dots.selectAll("dot")
.data(real)
.enter().append("circle")
.attr('class', 'dotContext')
.attr("r",3)
.style("opacity", .5)
.attr("cx", function(d,i) { return x2(i); })
.attr("cy", function(d) { return y2(d); })
.attr("fill",(function (d) { return color(d) }));
context.append("g")
.attr("class", "axis axis--x")
.attr("transform", "translate(0," + height2 + ")")
.call(xAxis2);
context.append("g")
.attr("class", "brush")
.call(brush)
.call(brush.move, x.range());
focus.append("path")
.data([real])
.attr("class", "line")
.attr("d", formain);
context.append("path")
.data([real])
.attr("class", "line")
.attr("d", forbrush);
//create brush function redraw scatterplot with selection
function brushed() {
var selection = d3.event.selection;
x.domain(selection.map(x2.invert, x2));
focus.selectAll(".dot")
.attr("cx", function(d,i) { return x(i); })
.attr("cy", function(d) { return y(d); });
context.selectAll(".line")
.attr("cx", function(d,i) { return x(i); })
.attr("cy", function(d) { return y(d); });
focus.select(".axis--x").call(xAxis);
context.select(".axis--x").call(xAxis2);
}
</script>
The output I received is something like the following:
What I want is the the magnifier focus should display the respective contents of the line and the dots. Plus I want to have the line in the background and dots on the foreground.
Please help me modify the sample for my use. There is some attribute I guess I am missing.
The sample csv need is : Sample Csv
Try to change the few thing and it will work. see below:
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 + ")");
focus.append("path")
.data([real])
.attr("class", "line")
.attr("d", formain);
context.append("path")
.data([real])
.attr("class", "line")
.attr("d", forbrush);
Place it just as mentioned.
Change the brushed() function like the following:
function brushed() {
var selection = d3.event.selection;
x.domain(selection.map(x2.invert, x2));
focus.selectAll(".dot")
.attr("cx", function(d,i) { return x(i); })
.attr("cy", function(d) { return y(d); });
focus.selectAll(".line")
.attr("d",formain)
}
See the output of mine. It worked.:
Hope this will help you.

D3 Tooltip not Working

Below is my code to load a D3 multine chart in a leaflet map popup everything works fine but i am not able to load tooltips the mouse events are not picking up. Even console.log on mousemove over the element is not working also i am able to inspect the element on right click. I also do not see anything related to this element in event listners.
var chartdiv = document.createElement("div");
chartdiv.className = "pricechart";
// set the dimensions and margins of the graph
var margin = {top: 25, right: 70, bottom: 80, left: 50},
width = 480 - margin.left - margin.right,
height = 240 - margin.top - margin.bottom;
// parse the date / time
//var parseTime = d3.timeParse("%Y-%m-%d");
// set the ranges
var x = d3.scaleTime().range([0, width]);
var y = d3.scaleLinear().range([height, 0]);
var yrain = d3.scaleLinear().range([height, 0]);
// define the line
var smi_line = d3.line()
.x(function(d) { return x(d.date); })
.y(function(d) { return y(d.smi); })
var rain_line = d3.line()
.x(function(d) { return x(d.date); })
.y(function(d) { return y(d.rain); });
// gridlines in x axis function
function make_x_gridlines() {
return d3.axisBottom(x)
}
// gridlines in y axis function
function make_y_gridlines() {
return d3.axisLeft(y).ticks(5)
}
// append the svg obgect to the body of the page
// appends a 'group' element to 'svg'
// moves the 'group' element to the top left margin
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 + ")");
// Scale the range of the data
x.domain(d3.extent(stats, function(d) { return d.date; }));
y.domain([d3.min(stats, function(d) { return Math.min(d.smi, d.rain, 0); }) , d3.max(stats, function(d) { return Math.max(d.smi, d.rain, 100); })]);
svg.append("linearGradient")
.attr("id", "temperature-gradient")
.attr("gradientUnits", "userSpaceOnUse")
.attr("x1", 0).attr("y1", y(0))
.attr("x2", 0).attr("y2", y(100))
.selectAll("stop")
.data([
{offset: "0%", color: "rgb(252, 0, 23)"},
{offset: "25%", color: "rgb(252, 0, 23)"},
{offset: "26%", color: "rgb(255, 254, 52)"},
{offset: "50%", color: "rgb(255, 254, 52)"},
{offset: "51%", color: "rgb(44, 255, 254)"},
{offset: "75%", color: "rgb(44, 255, 254)"},
{offset: "76%", color: "rgb(4, 20, 251)"},
{offset: "100%", color: "rgb(4, 20, 251)"}
])
.enter().append("stop")
.attr("offset", function(d) { return d.offset; })
.attr("stop-color", function(d) { return d.color; });
// add the X gridlines
svg.append("g")
.attr("class", "grid")
.attr("transform", "translate(0," + height + ")")
.call(make_x_gridlines()
.tickSize(-height)
.tickFormat("")
)
// add the Y gridlines
svg.append("g")
.attr("class", "grid")
.call(make_y_gridlines()
.tickSize(-width)
.tickFormat("")
)
// Add the SMI path.
svg.append("path")
.data([stats])
.attr("class", "smi-line")
//.style("stroke", "#ff0000")
.attr("d", smi_line);
// Add the Rain path.
svg.append("path")
.data([stats])
.attr("class", "rain-line")
//.style("stroke", "#ff0000")
.attr("d", rain_line);
// Add the X Axis
svg.append("g")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x)
.tickFormat(d3.timeFormat("%d-%b-%y")))
.selectAll("text")
.style("text-anchor", "end")
.attr("dx", "-.8em")
.attr("dy", ".15em")
.attr("transform", "rotate(-45)");
// text label for the x axis
svg.append("text")
.attr("transform",
"translate(" + (width/2) + " ," +
(height + margin.bottom -30) + ")")
.style("text-anchor", "middle")
.attr("dy", "1em")
.text("Date");
// Add the Y Axis
svg.append("g")
.call(d3.axisLeft(y).ticks(5));
// text label for the y axis
svg.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 0 - margin.left)
.attr("x",0 - (height / 2))
.attr("dy", "1em")
.style("text-anchor", "middle")
.text("Soil Moisture Index");
// Add the Right Y Axis
svg.append("g")
.attr("transform", "translate(" + width + " ,0)")
.call(d3.axisRight(y).ticks(5)
.tickFormat(d => (d + " mm")));
// text label for the y axis
svg.append("text")
.attr("transform", "rotate(-90)")
.attr("y", width + margin.right -15)
.attr("x",0 - (height / 2))
.attr("dy", "1em")
.style("text-anchor", "middle")
.text("Rainfall");
var g = svg.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var focus = g.append("g")
.attr("class", "focus")
.style("display", "none");
focus.append("line")
.attr("class", "x-hover-line hover-line")
.attr("y1", 0)
.attr("y2", height);
focus.append("line")
.attr("class", "y-hover-line hover-line")
.attr("x1", width)
.attr("x2", width);
focus.append("circle")
.attr("r", 7.5);
focus.append("text")
.attr("x", 15)
.attr("dy", ".31em");
svg.append("rect")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")")
.attr("class", "overlay")
.attr("width", width)
.attr("height", height)
.on("mouseover", function() { focus.style("display", null); })
.on("mouseout", function() { focus.style("display", "none"); })
.on("mousemove", mousemove);
var bisectDate = d3.bisector(function(d) { return d.year; }).left;
function mousemove() {
console.log('mousemove');
var x0 = x.invert(d3.mouse(this)[0]),
i = bisectDate(data, x0, 1),
d0 = data[i - 1],
d1 = data[i],
d = x0 - d0.year > d1.year - x0 ? d1 : d0;
focus.attr("transform", "translate(" + x(d.year) + "," + y(d.value) + ")");
focus.select("text").text(function() { return d.value; });
focus.select(".x-hover-line").attr("y2", height - y(d.value));
focus.select(".y-hover-line").attr("x2", width + width);
}

Add legend to chart with D3 V4 Angular-cli

I am using D3 charting library to create charts with Angular-cli. D3 version is 4.2.2. I create a multi-line chart and here is I am trying to add legend to the chart. Following code is my code look like.
import {Directive, ElementRef, HostListener, Renderer} from '#angular/core';
import * as D3 from 'd3';
#Directive({
selector: 'bar-graph'
})
export class BarGraphDirective {
private htmlElement:HTMLElement;
constructor(private elementRef:ElementRef, private renderer: Renderer) {
this.htmlElement = this.elementRef.nativeElement;
console.log(this.htmlElement);
console.log(D3);
let d3:any = D3;
var data = [{
"date": "2016-10-01",
"sales": 110,
"searches": 67
}, ...];
// set the dimensions and margins of the graph
var margin = {
top: 20,
right: 80,
bottom: 30,
left: 50
},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
// parse the date / time
var parseDate = d3.timeParse("%Y-%m-%d");
var formatTime = d3.timeFormat("%e %B");
// set the ranges
var x = d3.scaleTime().range([0, width]);
var y = d3.scaleLinear().range([height, 0]);
var sales = function (d) {
return d["sales"];
}
var searches = function (d) {
return d.searches;
}
// define the line
var line = d3.line()
.x(function (d) {
return x(d.date);
})
.y(function (d) {
return y(d.sales);
});
var svg = d3.select(this.htmlElement).append("svg")
.attr("class", "bar-graph")
.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.scaleOrdinal(d3.schemeCategory10);
var tooltip = d3.select("body").append("div")
.style("opacity", 0);
// format the data
data.forEach(function (d) {
d.date = parseDate(d.date);
});
x.domain(d3.extent(data, function (d) {
return d.date;
}));
y.domain([0, d3.max(data, function (d) {
return d.sales > d.searches ? d.sales : d.searches;
})]);
// Add the line path.
svg.append("path")
.attr("class", "line")
.style("fill", "none")
.attr("d", line(data))
.style("stroke", "orange")
.style("stroke-width", "2px");
// change line to look at searches
line.y(function (d) {
return y(d.searches);
});
// Add the second line path.
svg.append("path")
.attr("class", "line")
.style("fill", "none")
.attr("d", line(data))
.style("stroke", "steelblue")
.style("stroke-width", "2px");
// Add sales to the scatterplot
svg.selectAll(".sales-circle")
.data(data)
.enter().append("circle")
.attr('class', 'sales-circle')
.attr("r", 4)
.attr("cx", function (d) {
return x(d.date);
})
.attr("cy", function (d) {
return y(d.sales);
})
.style("fill", "orange");
// Add searches to the scatterplot
svg.selectAll(".searches-circle")
.data(data)
.enter().append("circle")
.attr("r", 4)
.attr('class', 'searches-circle')
.attr("cx", function (d) {
return x(d.date);
})
.attr("cy", function (d) {
return y(d.searches);
})
.style("fill", "steelblue")
.on("mouseover", function (d) {
tooltip.transition()
.duration(200)
.style("opacity", .9);
tooltip.html(formatTime(d["date"]) + "<br/> Searches: " + d["searches"])
.style("left", (d3.event.pageX + 5) + "px")
.style("top", (d3.event.pageY - 28) + "px")
.classed("tooltip", true);
})
.on("mouseout", function (d) {
tooltip.transition()
.duration(500)
.style("opacity", 0);
});
// draw legend
var legend = svg.selectAll("g")
.data(data)
.enter().append("g")
.attr("class", "legend");
// draw legend colored rectangles
legend.append("rect")
.attr("x", width - 18)
.attr("width", 18)
.attr("height", 18)
.style("fill", color);
// draw legend text
legend.append("text")
.style("font", "14px open-sans")
.attr("x", width - 24)
.attr("y", 9)
.attr("dy", ".35em")
.style("text-anchor", "end")
.text("Sales");
// Add the X Axis
svg.append("g")
.style("font", "14px open-sans")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x).tickFormat(d3.timeFormat("%d/%m")));
// Add the Y Axis
svg.append("g")
.style("font", "14px open-sans")
.call(d3.axisLeft(y));
// Add Axis labels
svg.append("text")
.style("font", "14px open-sans")
.attr("text-anchor", "middle")
.attr("transform", "translate(" + (-margin.left / 2) + "," + (height / 2) + ")rotate(-90)")
.text("Sales / Searches");
svg.append("text")
.style("font", "14px open-sans")
.attr("text-anchor", "middle")
.attr("transform", "translate(" + (width / 2) + "," + (height + (margin.bottom)) + ")")
.text("Date");
}
}
My chart looks like below. It shows only one item in the legend. How to add both items (sales & searches) to the legend.
Any suggestion are highly appreciated.
Thanks You
Add this in the code for adding new rect and text:
legend.append("rect")
.attr("x", width - 18)
.attr("y", 18)
.attr("width", 18)
.attr("height", 18)
.style("fill", "steelblue");
// draw legend text
legend.append("text")
.style("font", "14px open-sans")
.attr("x", width - 24)
.attr("y", 18)
.attr("dy", ".35em")
.style("text-anchor", "end")
.text("Searches");

D3 Scale domain does not update with selected data. I get negative values

I have a bar chart that updates based on the results selected in a drop-down menu. When I change the selcetion, I get negaitve "y" values. It seems that my domain does not get updated with the new data. When I hard code the domain, my "y" are what I expect them to be. Anyone knows why ? Any other other comments (formatting, etc) welcomed.
var new_data;
//Create SVG margins and patting for the interior
var margin = {top: 20, right: 20, bottom: 30, left: 40},
width = 600 - margin.left - margin.right,
height = 300 - margin.top - margin.bottom;
//Create Scale
var xScale = d3
.scale
.ordinal()
.rangeRoundBands([margin.left, width], .1);
;
var yScale = d3
.scale
.linear()
.range([height, 0])
;
var xAxis = d3
.svg
.axis()
.scale(xScale)
.orient("bottom")
.tickPadding([5])
;
var yAxis = d3.svg.axis()
.scale(yScale)
.orient("left")
.ticks(10)
;
//Create SVG with the above specs
var svg = d3.select("#container")
.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 + ")")
;
svg
.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
;
svg
.append("g")
.attr("class", "y axis")
.append("text") // just for the title (ticks are automatic)
.attr("transform", "rotate(-90)") // rotate the text!
.attr("y", 6)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text("frequency")
;
var temp = svg
.append("g")
.attr("class", "domx")
;
d3.csv("data3.csv", function(error, csv_data) {
// Filter the dataset to only get dept_1
var new_data = csv_data.filter(function(d) {
return d['dept'] == 'dept_1';
});
// function to handle histogram.
function histoGram(new_data){
//Create Scales
xScale
.domain(new_data.map(function(d) {return d.Pos;}))
;
yScale
// .domain([0, d3.max(new_data, function(d) { return d.Value; })])
.domain([0, d3.max(new_data, function(d) { return d.Value; })])
// .domain([0, 20])
;
svg
.select(".x.axis")
.transition()
.duration(1500)
.call(xAxis)
;
svg
.select(".y.axis")
.transition()
.duration(1500)
.call(yAxis)
;
// Data Join
var MyGroups = temp
.selectAll("g")
.data(new_data);
;
var MyGroupsEnter = MyGroups
.enter()
.append("g")
;
//Update
MyGroups
.attr("class", "update")
;
//Enter
MyGroupsEnter
.append("rect")
.attr("class", "enter")
.attr("x", function(d) { return xScale(d.Pos); })
.attr("y", function(d) { return (yScale(d.Value));})
.attr("width", xScale.rangeBand())
.attr("height", function(d) { return (height - yScale(d.Value)); })
.text(function(d) { return d.Value; })
.attr("fill", function(d) {return "rgb(0, 0, 0)";})
.style("fill-opacity", 0.2)
;
MyGroupsEnter
.append("text")
.attr("class", "text")
.text(function(d) { return d.Value; })
.attr("font-family", "sans-serif")
.attr("font-size", "11px")
.attr("fill", "black")
.attr("text-anchor", "middle")
.attr("x", function(d) { return xScale(d.Pos) + xScale.rangeBand()/2; })
.attr("y", function(d) { return yScale(d.Value) - 10; })
;
//Enter + Update
MyGroups
.transition()
.duration(1500)
.select("rect")
.attr("x", function(d) { return xScale(d.Pos); })
.attr("width", xScale.rangeBand())
.attr("y", function(d) { return (yScale(d.Value));})
.attr("height", function(d) { return (height - yScale(d.Value)); })
.text(function(d) { return d.Value; })
.style("fill-opacity", 1) // set the fill opacity
.attr("fill", function(d) {return "rgb(0, 0, " + (d.Value * 30) + ")";})
;
MyGroups
.transition()
.duration(1500)
.select("text")
.attr("class", "text")
.text(function(d) { return d.Value; })
.attr("font-family", "sans-serif")
.attr("font-size", "11px")
.attr("fill", "black")
.attr("text-anchor", "middle")
.attr("x", function(d) { return xScale(d.Pos) + xScale.rangeBand()/2; })
.attr("y", function(d) { return yScale(d.Value) - 8; })
;
MyGroups
.exit()
.transition()
.duration(1500)
.remove()
;
}
histoGram(new_data);
var options = ["dept_1","dept_2","dept_3"];
var dropDown = d3
.select("#sel_button")
.append("select")
.attr("name", "options-list")
.attr("id", "id-name");
var options = dropDown
.selectAll("option")
.data(options)
.enter()
.append("option");
options
.text(function (d) { return d; })
.attr("value", function (d) { return d; });
d3.select("#id-name")
.on("change", function() {
var value = d3.select(this).property("value");
var new_data2 = csv_data.filter(function(d) {
return d['dept'] == value;
});
histoGram(new_data2);
});
});
Here is the data:
dept,Pos,Value
dept_1,d1_p1,1
dept_1,d1_p10,10
dept_1,d1_p11,11
dept_1,d1_p12,12
dept_2,d2_p1,1.5
dept_2,d2_p2,3
dept_2,d2_p3,4.5
dept_2,d2_p4,6
dept_2,d2_p5,7.5
dept_2,d2_p6,9
dept_2,d2_p7,10.5
dept_2,d2_p8,12
dept_2,d2_p9,13.5
dept_2,d2_p10,15
dept_2,d2_p11,16.5
dept_2,d2_p12,17.5
dept_2,d2_p13,18.5
dept_3,d3_p1,5
dept_3,d3_p2,7
dept_3,d3_p3,10
Firgured out what was my problem. I hadn't defined the format of the values. The max function was returning the maximum number out of character values (9). I added the following piece of code prior to the domain function and everything now works fines.
csv_data.forEach(function(d) {
d.dept = d.dept;
d.Pos = d.Pos;
d.Value = +d.Value;
});

Adding d3 Label not working

I have been trying to add labels to my bar chart as described in this question:
Adding label on a D3 bar chart
However, I can get the labels to display, but not over the appropriate bar (they are all lined up over/ on the first bar). Any help would be greatly appreciated. Here is my code:
var cdata = { title: "Sample Chart", Pod: 10, WOSNF : 201.57, SNFW: 8.89, YTDTarget: 15.14, AnnualTarget: 22.10, Max: 250 }
var margin = {top: 20, right: 20, bottom: 70, left: 40},
width = 500 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
// Parse the categories
var x = d3.scale.ordinal().rangeRoundBands([0, width], .05);
var y = d3.scale.linear().range([height, 30]);
y.domain([0, 30]);
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
var yAxis = d3.svg.axis()
.scale(y)
.orient("left")
.ticks(10);
var svg = d3.select("body").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 + ")");
d3.csv("data2.csv", function(error, data) {
data.forEach(function(d) {
d.value = +d.value;
console.log(d.value);
});
x.domain(data.map(function(d) { return d.Category; }));
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.append("text")
.style("text-anchor", "end")
.attr("x", width/2)
.attr("y", 30)
.attr("dx", ".71em")
.attr("transform", "translate(40,20)" )
;
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "translate(" + (width / 2) + ",-25)")
.attr("y", 6)
.attr("dy", ".71em")
.style("text-anchor", "middle")
.style("font-size", "14pt")
.text("Sample Chart");
svg.selectAll("bar")
.data(data)
.enter().append("rect")
.style("fill", "steelblue")
.style("fill-opacity", "0.5")
.attr("x", function(d) { return x(d.Category); })
.attr("width", x.rangeBand())
.attr("y", function(d) { return y(d.value) - 1;})
.attr("height", function(d) { return height - y(d.value);})
var yTextPadding = 20;
svg.selectAll("bartext")
.data(data)
.enter().append("text")
.attr("class", "bartext")
.attr("text-anchor", "middle")
.attr("fill", "black")
.attr("x", function(d, i) {
return x.rangeBand()/2;
})
.attr("y", function(d) {
return y(d.value);
})
.text(function(d){
return d.value;
});
});
var G3 = svg.append("g")
G3.append("line")
.attr("y1", y(cdata["YTDTarget"])-1)
.attr("y2", y(cdata["YTDTarget"])-1)
.attr("x1", 0)
.attr("x2", 500)
.attr("stroke-width", 2)
.attr("stroke", "black");
G3.append("text")
.attr("x",10)
.attr("y", y(cdata["YTDTarget"])+10)
.style("fill", "black")
.style("text-anchor", "start")
.text("RU YTD Target - " + cdata["YTDTarget"]);
var G4 = svg.append("g")
G4.append("line")
.attr("y1", y(cdata["AnnualTarget"])-1)
.attr("y2", y(cdata["AnnualTarget"])-1)
.attr("x1", 0)
.attr("x2", 500)
.attr("stroke-width", 2)
.attr("stroke", "black");
G4.append("text")
.attr("x", 10)
.attr("y", y(cdata["AnnualTarget"])+10)
.style("fill", "black")
.style("text-anchor", "start")
.text("RU Annual Target - " + cdata["AnnualTarget"]);
And here is the data:
Category,value
"Group1",27.2
"Group2",24.6
"Group3",27.1
The elements following the parsing of the data are to draw lines across the graph for reference.
Thanks!
You're currently setting the x position of the labels to half the width of the first bar (so they all end up on the left.
You want the x position of the bartext to start at the same spot as the current bar and add half the width of the bar:
.attr("x", function(d, i) {
return x(d.Category) + (x.rangeBand() / 2);
})

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