I am trying to do the following:
Click a node
Enlarge the image of that node according to its current width and height
The idea is to determine x,y position based on its own width and height so it does not run wild.
My code for force tick
function render(){
force.on("tick", function() {
node.attr("x", function(d) {return d.x-d.width/2})
.attr("y", function(d) {return d.y-d.height/2});
Declaration of node
var node = container.append("g").selectAll(".node")
.data(graph.nodes)
.enter()
.append("image")
.attr("xlink:href",function(d){return d.type+ ".svg" ;})
.attr("class", "node")
.attr("x", function(d) { return d.x; })
.attr("y", function(d) { return d.y; })
.attr("width", "24px")
.attr("height", "24px")
.attr("isChosen", "no")
.on("click",click);
Sample of data
"nodes":[
{"id":"0", "name":"ETCO I","type":"Company","trust":50},
{"id": "1","name":"PINKERTON Eidel ","type":"human","trust":50}
],
"links":[
{"source":1,"target":0,"linktype":"Secretary"},
{"source":1,"target":0,"linktype":"Director"},
Click handle
function click(node)
d3.select(this)
.attr("isChosen", "yes")
.transition()
.duration(750)
.attr("x", function(d) {return d.x-24})
.attr("y", function(d) {return d.y-24})
.attr("width", "35px")
.attr("height", "35px")
but it does not work, the image is all on left conner. Where does my logic go wrong?
Related
I am trying to add label to the nodes in a D3 force layout, but there seems to be some issue with it. All the text just shows up on top of the screen, overlapping on each other. Here is the code snippet:
var link = g.append("g")
.attr("class", "links")
.selectAll("line")
.data(graph.links)
.enter().append("line");
var node = g.append("g")
.attr("class", "nodes")
.selectAll("circle")
.data(graph.nodes)
.enter().append("circle")
.attr("r", 2.5)
.on('click', clicked);
var text = g.append("g")
.attr("class", "labels")
.selectAll("text")
.data(graph.nodes)
.enter().append("text")
.attr("dx", 12)
.attr("dy", ".35em")
.text(function(d) { return d.name });
Elements piling up on the top left corner of the SVG (which is the origin) is a symptom of several problems, among them:
NaN for the positions
Not setting the positions
Not translating the element
Not including the element in the tickfunction
As you have a force directed chart, the last one is the obvious reason.
Solution: You have to include the text in your ticked function.
function ticked() {
link.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; });
node.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; });
text.attr("x", function(d) { return d.x; })
.attr("y", function(d) { return d.y; });
}
I found no direct answer for this, please forgive me if this has been covered differently in another topic.
I draw a bar chart which appears with a transition. I also want to add a tooltip which displays the value of data on mousehover.
Using the code below I have managed to obtain either the tooltip or the transition, but never the 2 together, which is my objective.
chart.selectAll(".bar")
.data(data)
.enter()
.append("rect")
.attr("class", "bar")
.attr("fill", function(d) {return colorscale(colorize(d.age));})
.attr("x", function(d) {return xscale(d.name);})
.attr("y", height - 3)
.attr("height", 3)
.attr("width", xscale.rangeBand())
.append("title")
.text(function(d){return d.age;})
.transition()
.duration(1600)
.attr("y", function (d) {return yscale(d.age);})
.attr("height", function (d) {return height - yscale(d.age);}) ;
If I remove
.append("title")
.text(function(d){return d.age;})
Then my transition works fine. If I but those 2 lines back I can see my tooltip but I lose my transition.
Any suggestion would be appreciated!
You can see the result here
Thank you
You need to add the transition to the rect and not the title element:
var sel = chart.selectAll(".bar")
.data(data)
.enter()
.append("rect");
sel.append("title")
.text(function(d){return d.age;});
sel.transition()
.duration(1600)
.attr("y", function (d) {return yscale(d.age);})
.attr("height", function (d) {return height - yscale(d.age);}) ;
I am having issues trying to build this jquery based d3.js barchart plugin.
the bars are displaced to the left, not sure why
the bars are not updating to new data.
I've tried to get the bars to animate - but not had any success.
http://jsfiddle.net/NYEaX/161/
Here is the animate bars function
animateBars: function(data){
var svg = d3.select(methods.el["selector"] + " .barchart");
var bars = svg.selectAll(".bar")
.data(data);
bars
.enter().append("rect")
.attr("class", "bar")
.attr("x", function(d) { return methods.x(d.letter); })
.attr("width", methods.x.rangeBand())
.attr("y", function(d) { return methods.y(d.frequency); })
.attr("height", function(d) { return methods.height - methods.y(d.frequency); })
.transition()
.duration(300)
bars
.transition()
.duration(300)
bars.exit()
.transition()
.duration(300)
}
I fixed the transition for new bars in your jsfiddle. I hope it reveals the functionality of transitions:
http://jsfiddle.net/NYEaX/893/
How it works: After it sets the initial height and y value, it adds a transition to the end height and y value.
bars
.enter().append("rect")
.attr("class", "bar")
.attr("x", function(d) { return methods.x(d.letter); })
.attr("width", methods.x.rangeBand())
.attr("y", function(d) { return methods.y(0); })
.attr("height", function(d) { return methods.height - methods.y(0); })
.transition().duration(1000)
.attr("y", function(d) { return methods.y(d.frequency); })
.attr("height", function(d) { return methods.height - methods.y(d.frequency); });
I have been setting up graphs to dynamically scale in reference to the width and height of the svg or bounding box, and with nodes and node borders this is relatively simple. By using d.depth and assigning the desired ratio to assign a relative radius to a node at a certain depth, this is giving me no problems and nodes at lower depths become smaller to avoid overlap. Then, for the node border I assign a ratio between the node radius and the thickness of the border.
This has proven to be an ideal solution to a problem that arises when adding a zoom feature by scaling the container. This is the problem:
The text, the nodes, and the node borders no longer bunch up, but the links remain the same weight.
I would also like to scale the thickness of the edges between nodes but I do not know how to identify edges so that I can either assign a thickness in relation to the radius of the parent or child node
d3.json("aviation.json", function(root) {
var nodes = balloon.nodes(root),
links = balloon.links(nodes);
var link= svg.selectAll("path")
.data(links)
.enter().append("path")
.attr("d",diagonal)
.attr("stroke", "black")
.attr("shape-rendering", "auto")
.attr("fill", "none")
.data(nodes)
.attr("stroke-width", function(d) {return (1/5000*diameter);});
var node = svg.selectAll("g.node")
.data(nodes)
.enter()
.append("g")
.attr("class", "node");
node.append("circle")
.attr("r", function(d) { return d.r;})
.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; })
.attr("fill", "white")
.attr("opacity", "0.05")
.attr("stroke-width", function(d) {return d.r/600;}) //here I am referecing d.r
//to find the stroke width.
.attr("stroke-opacity", ".5")
.on("Click", function(d) { return zoomClick});
var text = svg.selectAll("g.text")
.data(nodes)
.enter()
.append("text")
.attr("dx", function(d) { return d.x })
.attr("dy", function(d) { return d.y })
.attr("font-family", "Helvetica")
.attr("font-size", function(d) {return d.children ? d.r/7 : d.r/4;})
.attr("stroke-width", function(d) {return d.r/400;})
.attr("stroke-opacity", "1")
.attr("fill", "white")
.attr("pointer-events", "all")
.style("text-anchor", "middle")
.text(function(d) { return d.name; })
I am trying to modify this D3.js example (Dynamic Node-Link Tree) by adding a specific label (SVG text) to each node, but unsucessfully.
If I understand correctly, after a brief look at SVG specs and D3 documentation, the best way would be to create SVG groups and move them around.
Unfortunately, this is not working, as the transitions have no effect on the groups.
Is there a simple(r) way I am not aware of?
Many thanks.
If you're looking for an effect where you switch the circles for text labels, you can do the following:
// Enter any new nodes at the parent's previous position.
node.enter().append("svg:text")
.attr("class", "node")
.attr("x", function(d) { return d.parent.data.x0; })
.attr("y", function(d) { return d.parent.data.y0; })
.attr("text-anchor", "middle")
.text(function(d) { return "Node "+(nodeCount++); })
.transition()
.duration(duration)
.attr("x", x)
.attr("y", y);
See the fiddle here: http://jsfiddle.net/mccannf/pcwMa/4/
Edit
However, if you're looking to add labels alongside the circles, I would not recommend using svg:g in this case, because then you would have to use transforms to move the groups around. Instead, just double up on the circle nodes and text nodes like so in the update function:
// Update the nodes…
var cnode = vis.selectAll("circle.node")
.data(nodes, nodeId);
cnode.enter().append("svg:circle")
.attr("class", "node")
.attr("r", 3.5)
.attr("cx", function(d) { return d.parent.data.x0; })
.attr("cy", function(d) { return d.parent.data.y0; })
.transition()
.duration(duration)
.attr("cx", x)
.attr("cy", y);
var tnode = vis.selectAll("text.node")
.data(nodes, nodeId);
tnode.enter().append("svg:text")
.attr("class", "node")
.text(function(d) { return "Node "+(nodeCount++); })
.attr("x", function(d) { return d.parent.data.x0; })
.attr("y", function(d) { return d.parent.data.y0; })
.transition()
.duration(duration)
.attr("x", x)
.attr("y", y);
// Transition nodes to their new position.
cnode.transition()
.duration(duration)
.attr("cx", x)
.attr("cy", y);
tnode.transition()
.duration(duration)
.attr("x", x)
.attr("y", y)
.attr("dx", 4)
.attr("dy", 4); //padding-left and padding-top
A fiddle that demonstrates this can be found here: http://jsfiddle.net/mccannf/8ny7w/19/