I would like to reproduce the process from D3 Sankey chart using circle node instead of rectangle node, however, I would like to select only certain nodes to change from rectangles to circles.
For example, in this jsfiddle used in the example, how would you only select Node 4 and Node 7 to be converted to a circle?
I updated your fiddle.
Basically you just need some way to select the nodes that you want to make different. I used unique classname so that you can style them with CSS as well. I didn't feel like writing the code to select just 4 and 7 (I'm lazy) so I just selected all of the even nodes instead.
// add in the nodes
var node = svg.append("g").selectAll(".node")
.data(graph.nodes)
.enter().append("g")
.attr("class", function (d, i) { return i % 2 ? "node rect" : "node circle";
})
Then you can use that to select the nodes and add circles instead of rectangles.
svg.selectAll(".node.circle").append("circle")
.attr("r", sankey.nodeWidth() / 2)
.attr("cy", function(d) { return d.dy/2; })
.attr("cx", sankey.nodeWidth() / 2)
.style("fill", function (d) {
There is also another similar approach, illustrated in the following jsfiddle.
I started from this fiddle (from another SO question that you merntioned)), where all nodes had already been converted to circles:
Then I modified existing and added some new code that involves filtering during creation of circles:
// add the circles for "node4" and "node7"
node
.filter(function(d){ return (d.name == "node4") || (d.name == "node7"); })
.append("circle")
.attr("cx", sankey.nodeWidth()/2)
.attr("cy", function (d) {
return d.dy/2;
})
.attr("r", function (d) {
return Math.sqrt(d.dy);
})
.style("fill", function (d) {
return d.color = color(d.name.replace(/ .*/, ""));
})
.style("fill-opacity", ".9")
.style("shape-rendering", "crispEdges")
.style("stroke", function (d) {
return d3.rgb(d.color).darker(2);
})
.append("title")
.text(function (d) {
return d.name + "\n" + format(d.value);
});
// add the rectangles for the rest of the nodes
node
.filter(function(d){ return !((d.name == "node4") || (d.name == "node7")); })
.append("rect")
.attr("y", function (d) {
return d.dy/2 - Math.sqrt(d.dy)/2;
})
.attr("height", function (d) {
return Math.sqrt(d.dy);
})
.attr("width", sankey.nodeWidth())
.style("fill", function (d) {
return d.color = color(d.name.replace(/ .*/, ""));
})
.style("fill-opacity", ".9")
.style("shape-rendering", "crispEdges")
.style("stroke", function (d) {
return d3.rgb(d.color).darker(2);
})
.append("title")
.text(function (d) {
return d.name + "\n" + format(d.value);
});
Similar code had to be modified for accurate positioning text beside rectangles.
I believe the final result looks natural, even though it lost some of the qualities of the original Sankey (like wider connections).
Related
I have followed an example from here https://bl.ocks.org/d3noob/4db972df5d7efc7d611255d1cc6f3c4f to create a similar graph. However, I have one additional column of data that I need to use to create circles that match the color of the line where the radius will be some scaled value of that column entry. So, col 3 has values like 873, 15, 1000, 1563, etc. I have tried to do something like
svg.selectAll('circle').data(data)
.enter().append("circle")
.attr("cx", function(d) { return x(d.date) })
.attr("cy", function(d) { return y(d.close) })
.attr("r", '5')
.attr("fill", "red");
right below the point we add the path (right after adding the value line path in the link), however, obviously this only enters circles for one line. I have to add them for both.
You actually need two circles' selections, one for open and another for close:
svg.selectAll(null).data(data)
.enter().append("circle")
.attr("cx", function(d) { return x(d.date) })
.attr("cy", function(d) { return y(d.close) })
.attr("r", '5')
.attr("fill", "steelblue");
svg.selectAll(null).data(data)
.enter().append("circle")
.attr("cx", function(d) { return x(d.date) })
.attr("cy", function(d) { return y(d.open) })
.attr("r", '5')
.attr("fill", "red");
Here is the resulting code: https://bl.ocks.org/GerardoFurtado/4179c63daf38d85a266fb11f8e8e4c17/3786e4a0594e45e6e9a41df84bae4c6a43a86c6f
I am making grouped bar chart based on Mike Bostock's tutorial.
I can't figure out how to put circles on top of my bars to act as tooltip when hovering, just like in this tutorial except it's on bars and not on a line.
I tried appending the circles like this :
svg.selectAll("dot")
.data(data)
.enter().append("circle")
.attr("r", 5)
.attr("cx", function(d) { return x1(d.name); })
.attr("cy", function(d) { return y(d.value); })
});
But I get NaN values. I am very confused about which variable I should use to get the right cx and cy.
Here is my code.
Any ideas ?
Thank you
You will get NaN values since your data join is not correct, you are trying to get values that are not currently present in your data. In order to get those values you would need to make a reference to data.years.
Here is my approach:
// Inheriting data from parent node and setting it up,
// add year to each object so we can make use for our
// mouse interactions.
year.selectAll('.gender-circles')
.data(function(data) {
return data.years.map(function(d) {
d.year = data.year;
return d;
})
})
.enter().append('circle')
.attr("class", function(d) {
return "gender-circles gender-circles-" + d.year;
})
.attr("r", 10)
.attr('cx', function(d) {
console.log(d)
return x1(d.name) + 6.5;
})
.attr('cy', function(d) {
return y(d.value) - 15;
})
.style('display', 'none'); // default display
// ....
// Using an invisible rect for mouseover interactions
year.selectAll('.gender-rect-interaction')
.data(function(d) { // Inheriting data from parent node and setting it up
return [d];
})
.enter().append('rect')
.attr("width", x0.rangeBand()) // full width of x0 rangeband
.attr("x", function(d) {
return 0;
})
.attr("y", function(d) {
return 0;
})
.attr("height", function(d) { // full height
return height;
})
.style('opacity', 0) // invisible!
.on('mousemove', function(d) { // show all our circles by class
d3.selectAll('.gender-circles-' + d.year)
.style('display', 'block');
})
.on('mouseout', function(d) { // hide all our circles by class
d3.selectAll('.gender-circles-' + d.year)
.style('display', 'none');
});
Working plnkr: https://plnkr.co/edit/oH4KXdxdIW82nLGv46NI?p=preview
I have a line graph I've made from nested data. The user can pick which keys will be graphed. Each key value has 4 child values associated with it. Every key has the same child value names. Each child value has it's own line. So, if the user picks 2 keys to be graphed, 8 lines will be on the graph. 4 for one key and 4 for the other.
I've made a legend that will display the child name and the pattern of it's line. I would like to be able to click the name of the child value in the legend and all child values with that name will be hidden, even if they have a different key.
Here is how I nested:
var servers = d3.nest()
.key(function (d) { return d.serverName; })
.entries(data)
How I defined lines:
var lineGen = d3.svg.line()
.x(function (d) {
return x(timeFormat.parse(d.metricDate));
})
.y(function (d) {
return y(d.ServerLogon);
})
.interpolate("linear")
var lineGen2 = d3.svg.line()
.x(function (d) {
return x(timeFormat.parse(d.metricDate));
})
.y(function (d) {
return y1(d.Processor);
})
.interpolate("linear");
var lineGen3 = d3.svg.line()
.x(function (d) {
return x(timeFormat.parse(d.metricDate));
})
.y(function (d) {
return y2(d.AdminLogon);
})
.interpolate("linear");
var lineGen4 = d3.svg.line()
.x(function (d) {
return x(timeFormat.parse(d.metricDate));
})
.y(function (d) {
return y3(d.ServerExport);
})
.interpolate("linear");
How I append lines, text and line pattern for legend:
servers.forEach(function (d, i) {
visObjectLoc.append("svg:path")
.attr("class", "line")
.attr("fill", "none")
.attr("stroke-dasharray", ("15, 3"))
.attr("d", lineGen2(d.values))
.attr("id", "Processor")
.style("stroke", function () {
return d.color = color(d.key);
});
visObjectLoc.append("text")
.attr("x", WIDTH / 4)
.attr("y", 34)
.style("text-anchor", "middle")
.style("font-size", "18px")
.text("Processor")
.on("click", function () {
var active = d.active ? false : true,
newOpacity = active ? 0 : 1;
d3.select("#Processor")
.transition().duration(100)
.style("opacity", newOpacity);
d.active = active;
});
visObjectLoc.append("line")
.attr("x1", 455)
.attr("x2", 370)
.attr("y1", 44)
.attr("y2", 44)
.attr("stroke-width", 2)
.attr("stroke", "black")
.attr("stroke-dasharray", ("15, 3"))
});
So far, the onClicks are only hiding the first key's child line. I've tried giving each child line for each server the same ID. I'm thinking I'm not looping through the keys correctly or maybe each line isn't getting the ID it needs. Any suggestions are welcome and appreciated.
IDs are unique. If you want to select a group of things, give them a class. If you could put the project in a JSFiddle I could test it, but it might be as simple as changing the line in the servers.forEach(... in the following way:
.attr("id", "Processor")
to
.attr("class", "Processor")
and then in the onClick callback:
d3.selectAll(".Processor")
.transition().duration(100)
.style("opacity", newOpacity);
...
OBJECTIVE: append text to each node in a d3 force layout
BUG: text is appended to the object (I think, see console) but not displayed on screen
Here's the jsfiddle.
node.append("svg:text")
.text(function (d) { return d.name; }) // note that this works for
// storing the name as the id, as seen by selecting that element by
// it's ID in the CSS (see red-stroked node)
.style("fill", "#555")
.style("font-family", "Arial")
.style("font-size", 12);
I'd be so grateful for any thoughts.
You can't add svg text to a svg circle. You should first create an svg g object (g stands for group) for each node, and than add a circle and a text for each g element, like in this code:
var node = svg.selectAll(".node")
.data(graph.nodes)
.enter().append("g");
var circle = node.append("circle")
.attr("class", "node")
.attr("id", function (d) { return d.name; })
.attr("r", 5)
.style("fill", function (d) {
return color(d.group);
});
var label = node.append("svg:text")
.text(function (d) { return d.name; })
.style("text-anchor", "middle")
.style("fill", "#555")
.style("font-family", "Arial")
.style("font-size", 12);
Of course, tick function should be updated accordingly: (also css a little bit)
circle.attr("cx", function (d) {
return d.x;
})
.attr("cy", function (d) {
return d.y;
});
label.attr("x", function (d) {
return d.x;
})
.attr("y", function (d) {
return d.y - 10;
});
Here is jsfiddle.
I'm not sure if I've grouped my elements properly, but my layout in d3 is like so:
var circleGroup = svg.selectAll("g")
.data(nodeList)
.enter()
.append("g")
This creates a bunch a groups, I need a circle in each group:
circleGroup.append("circle")
.attr("cx", function(d,i){
return coordinates[i][0];
})
.attr("cy", function(d,i){
return coordinates[i][1];
})
.attr("r", function(d){
return 10;
})
.attr("fill", "white");
The data itself doesn't actually have any coordinate data so I dynamically arrange them in a circle and just position them based on index. I also add some labels. I repeat coordinates[i][0] here but is there a way to access the "cx" and "cy" attributes of the circles? I tried a few forms of d3.select(this) but I'm getting nothing.
circleGroup.append("text")
.attr("x", function(d,i){
return coordinates[i][0];
})
.attr("y", function(d,i){
return coordinates[i][1];
})
.style("text-anchor","middle")
.text(function(d,i){
return d;
});
Don't mess with indices, this is hard to maintain and error prone. Instead of that, given your specific tree structure, use node.previousSibling:
circleGroup.append("text")
.attr("x", function() {
return d3.select(this.previousSibling).attr("cx");
})
.attr("y", function() {
return d3.select(this.previousSibling).attr("cy");
})
Here is a demo using (most of) your code:
var svg = d3.select("svg")
var circleGroup = svg.selectAll("g")
.data(d3.range(5))
.enter()
.append("g");
circleGroup.append("circle")
.attr("cx", function(d, i) {
return 20 + Math.random() * 280;
})
.attr("cy", function(d, i) {
return 20 + Math.random() * 130;
})
.attr("r", function(d) {
return 10;
})
.style("opacity", 0.2);
circleGroup.append("text")
.attr("x", function() {
return d3.select(this.previousSibling).attr("cx");
})
.attr("y", function() {
return d3.select(this.previousSibling).attr("cy");
})
.style("text-anchor", "middle")
.text("Foo");
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.7.0/d3.min.js"></script>
<svg></svg>