I'm working on fading out certain lines from a chord diagram when a separate chart is hovered over. I'm looking at the code for the "fade" function,
`function fade(opacity) {
return function(g, i) {
svg.selectAll(".chord path")
.filter(function(d) { return d.source.index != i && d.target.index != i; })
.transition()
.style("opacity", opacity);
};
}`
And I was just wondering if someone could explain to me what d.source.index means and d.target.index mean. I generally understand that it's the source of the chord and the target of the chord, but I wanted to gain some more specific insight into the values/meaning of "index" so that I could better manipulate the selection.
My ultimate goal is to over over a box in a separate legend rectangle, and have the chord diagram fade so that only the color hovered over in the legend box retains full opacity.
Every chord has data associated with it. This data has, among other things, source and target attributes, which point to the nodes that the chord connects. In the code above, the index attribute of the source and target nodes is referenced to identify which ones to filter. This can be anything you want though.
In your application, depending on what the legend is for, you would need to check the value displayed in the legend for the source/target nodes or the chord itself.
Related
I am working with a zoomable sunburst in D3 that also has some breadcrumbs. First time working with D3 so I don't know all of the intricacies yet, but I am having trouble getting the colors of the arcs in the sunburst and the breadcrumbs in the sequence to match up. It only ever happens on the leaf nodes too which is weird. I can click on the inner circle and the breadcrumb shows up with the same color, and so on until I click on a leaf node.
Originally I set the color like this var colors = d3.scale.category10(); and the in the chart options like color: colors, When trying to set the colors for the polygon for the bread crumb I thought it'd be as simple as this which I had seen from a few examples,
entering.append("svg:polygon")
.attr("points", breadcrumbPoints)
.style("fill", function(d) {
return colors(d.name);
});
But this results in the explanation above. So to clarify in the picture below, either the outer arc on the sunburst should be pink, or the lowest bread crumb should be red. (I'm not sure which is correct, probably the former):
I have a working plunker I am almost done with, but can't get this part. Also part two kind of, but is it possible to set the color of individual arcs based on a certain value?
EDIT Okay well after looking at some more examples, it appears the red on red is okay in the picture for example. So I guess the solution I am looking for is to correct the behavior of the breadcrumbs.
I'm looking for some advice on how to get two elements in a visualization, which are linked by a common data value, to respond simultaneously.
Here is the visualization as it stands now.
http://bl.ocks.org/natemiller/2686e5c0d9a1a4bb0895
Note that the different colored points are for the 50 US states in 2005 (green) and 2013 (blue), so there is a blue point and a green point for each state. I have two things I would like to get working here.
I would like to be able to mouseover either a blue point or a green point and have the corresponding point (for the same state) highlighted.
I would like a tooltip with some basic data to appear next to both points, providing point specific data.
Regarding the first point above. Right now when you mouseover a blue point the corresponding green point is highlighted, however, when you mouseover a green point only that point is highlighted and not its corresponding blue point. I imagine this is a simple fix, but for the life of me I can't figure out to reverse the reference so I get green to blue references as well.
Regarding the second point. Right now a tooltip with relevant information appears near the moused-over point, but I would like to have a similar tooltip appear next to the corresponding point from the alternate year of data, so that direct comparisons across years are easier. I am quite new to adding HTML tooltips so I'm not clear on how to do this and suspect it may require a new method for adding tooltips. Can any help to steer me in the correct direction for how to have a tooltip appear near the moused-over element and a corresponding linked element?
1) Remember that ids are unique and you're creating multiple circles with the same id, use a class instead
circles.attr("class", function(d) { return d.state })
2) You're creating a single tooltip, if you want to show one for each pair of states create multiple tooltips
Assuming that you make these changes you can easily create multiple tooltips for each pair of states
circles.on('mouseover', function (d) {
// selection for 2 states
var states = d3.selectAll('circle.' + d.state)
// code to style those nodes goes here ...
// tooltips for the states
var tooltips = d3.select('svg').selectAll('text.tooltip')
.data(states.data())
// initial styling of the tooltips goes here...
tooltips
.enter()
.append('text')
.attr('class', 'tooltip')
// update
tooltips
.html(function (d) {
// text of the tooltip
return 'something'
})
// positioning, it requires some margin fixes I guess
.attr('x', function (d) { return xScale(d.child_pov) })
.attr('y', function (d) { return yScale(d.non_math_prof) })
})
Finally remove the tooltips created on mouseover when the mouseout event is triggered
circles.on('mouseout', function (d) {
d3.select('svg').selectAll('text.tooltip').remove()
})
You cannot have multiple elements with the same id. Use a class .circleHawaii instead of an id #circleHawaii.
What I'm trying to do is relatively simple but I'm new to JS and D3.js.
I have created a bunch of rectangles using SVG through D3.js.
I added some code to handle a click event and in there I'd like to iterate through all drawn nodes and do something with them as long as a specific property matches the same property in the one that's been clicked.
Here's the code that draws the rectangles (only one of them here);
d3.select("svg")
.append("rect").attr("x", 50)
.attr("y", 10)
.attr("height", 20)
.attr("width", 200)
.attr("title", "catalog")
.style("fill", "#CB4B19")
.on("click", mouseClick)
And here's how I'm trying to retrieve the "title" property of each rectangle drawn and compare it to the clicked one (and in this case, just log it in the console). I know this is probably basic but I can't figure out what I'm doing wrong here.
function mouseClick(d) {
var t = d3.select(this).attr("title"); //store the "title" property of the clicked rectangle
d3.selectAll("rect").each(function(d, i){ //Select all rectangles drawn
if(d3.select(this).attr("title") == t){ //for each one, if the "title" property = the one initially chosen
console.log(t); //do something here
}
})
}
Your code actually seems to be working correctly. At least for me it did. One thing I will say is that d3 does mimic jQuery syntax in that it lets you select elements with attributes with the d3.select('element[attributeName="?"]') syntax. You can read more about selections here.
So for your example, you could do
var t = d3.select(this).attr("title");
// select all rectangles with the attribute title
d3.selectAll("rect[title='" + t + "']").each(function(d, i){
console.log(t);
});
You no longer need the if statement to check because you are only selecting them. I made a simple jsFiddle to show this. I made 3 different types of rectangles with different title attributes and when you click on them, it only selects rect that have the same title attribute.
http://jsfiddle.net/augburto/znqe8nqr/
I have a Sunburst diagram which uses essentially the same code as the standard at http://bl.ocks.org/kerryrodden/7090426 .
However, I have many many 'nodes' in my final two rings and any combination of colours makes it look extremely messy. As each node within the diagram is pulled from a database I'm unable to assign specific colours to values as the values are all unique.
Is there a way that I could specify a colour for the entirety of each individual ring in the diagram? As an example, I would like it to look somewhat like this:
http://www.design-by-izo.com/wp-content/uploads/2011/02/Krakow-3.jpg
That way I would be able to come up with a palette that doesn't clash as much as applying range of colours that d3 just cycles through.
From what I understand, you can simply change the fill style in the diagram, using depth of the respective data, like so:
.style('fill', function (d) {
return color(d.depth);
})
where color is some sort of a color array.
Alternatively, ES6/2015, just:
.style('fill', d => color(d.depth))
Here's a fiddle, showing you the effect: Fiddle
(based on this)
I hope this is what you want.
(first posted on google group but no response so assuming I should be posting this here).
Am trying to lay a sunburst (coloured arcs) on top of a pie (yellow and white segments).
Here is a js fiddle that shows the problem, the initial green segments are missing:
http://jsfiddle.net/qyCkB/1/:
and a js fiddle without the pie where all the segments are shown correctly:
http://jsfiddle.net/X3sRy/1/
I have checked the nodes variable after it has been created on this line:
var nodes = partition.nodes({'values': data});
and the values appear to be the same in both examples.
On checking the DOM, it is just not drawing the first few segments of the sunburst.
Should this work or is it not possible to put two different layouts on top of each other?
Is there a better approach to achieving the same thing?
Your second-data join is colliding with the first. Your first data-join is on "g.arc", so you should be adding G elements with the class "arc" (not "clock_arc"). Your second data-join is on "path", which is inadvertently selecting the path elements you added previously. Since your second data-join matches the previously-added elements, you're not entering all of the expected elements for the pie.
You need to disambiguate the sunburst path elements from the pie path elements. One way you could do this is to select by class rather than element type, so the second data-join becomes ".pie" rather than "path". Something like this:
var gClock = svg.selectAll(".clock")
.data(clockData)
.enter().append("g")
.attr("class", "clock");
var pathClock = gClock.append("path");
var pathPie = svg.selectAll(".pie")
.data(pieData)
.enter().append("path")
.attr("class", "pie");
I'd also recommend reading these tutorials, if you haven't already: Thinking with Joins, Nested Selections, Object Constancy.