Drawing text inside D3 rect element? - text

I have code here and I need to add text into the rect element on the right of all the hexagons and have it act like a paragraph inside of a div with a given height and width and have it wrap properly. Here is the jsfiddle. and the code that draws the rect is below:
http://jsfiddle.net/2nykc/
var infoRect = svgContainer.append("rect");
var infoRectAttr = infoRect.attr("x", function(){
return infoDivX;
})
.attr("y", function(){
return infoDivY;
})
.attr("width", function(){
return infoDivWidth;
})
.attr("height", function(){
return infoDivHeight;
})
.style("fill", "rgb(30,180,134)")
.style("stroke", "black")
.style("stroke-width", 3)
.attr("id", "infoRect");

Related

Embellishing D3 SVG circle pack diagram

My D3 circle pack looks like this: (also accesible via jsfiddle)
However, I would like the diagram to look like this: (don't pay attention on labels, or circle pack placement, they are not essential for my case; I meant just co show "3d" looks of circles, and their coloring)
What would be the good way to achieve this?
After #Delapouite answer, I put together another jsfiddle:
The key code is:
var data2 = pack.nodes(data);
var grads = svg.append("defs").selectAll("radialGradient")
.data(data2)
.enter()
.append("radialGradient")
.attr("gradientUnits", "objectBoundingBox")
.attr("cx", 0)
.attr("cy", 0)
.attr("r", "100%")
.attr("id", function(d, i) { return "grad" + i; });
grads.append("stop").attr("offset", "0%").style("stop-color", "white");
grads.append("stop").attr("offset", "100%").style("stop-color", "navy");
and
var circles = vis.append("circle")
.attr("stroke", "black")
.attr("fill", function(d, i) {
return !d.children ? "url(#grad" + i + ")" : "beige";
})
.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; })
.attr("r", function(d) { return d.r; });
You can fake the 3D effect of each ball by applying a soft radial gradient to the fill property of the circles :
https://developer.mozilla.org/en-US/docs/Web/SVG/Tutorial/Gradients

d3 - foreign object - getting the right scope

I am using foreignObject to use HTML inside a d3 circle.
What I want:
use HTML inside d3 objects
reach the normal scopes outside of HTML code
Now I have problems to get the right scope for using functions.
If I use "this" inside the
.html(".....")
I get the "g" element of d3. So is there a way to get to my normal scopes? Or is there even a more elegant way to solve this problem?
var foreign = that._foreignObject = d3.select(this).append("foreignObject")
.attr("width", 30)
.attr("height", 30)
.append("xhtml:div")
.style("font", "15px 'Arial'")
.html("<button name=Klickmich type=button value=play onclick=>");
EDIT: 16.12.2013:
var nodeEnter = node.enter().append("svg:g")
.attr("class", "node")
.attr("transform", function (d) {
return "translate(" + source.y0 + "," + source.x0 + ")";
})
//click once
.on("click", function (d) {
if (that._foreignObject) {
that._foreignObject.remove();
}
that.toggle(d);
that.update(d);
that.onNodeClick(d);
var circle = d3.select(this).select("circle")
.transition()
.duration(750)
.attr("r", 17)
.attr("width", 40)
.attr("heigth", 40)
.style("stroke-dasharray", ("5,2"))
.style("stroke-width", 2)
.style("stroke", "black");
var button = "<button name=Klickmich type=button value=play onclick=>";
var foreign = that._foreignObject = d3.select(this).append("foreignObject")
.attr("width", 30)
.attr("height", 30)
.append("xhtml:div")
.style("font", "15px 'Arial'")
.html(button)
.on("click", function (d) {
console.log("heyho");
});
d3.select(this).select("text").transition()
.duration(750)
.style("font-size", 15)
.style("font-weight", "bold")
.attr("x", function (d) {
return d.children || d._children ? -20 : -20;
});
})
If i Click on my html button i set
this._clicked = 1;
And the onClick function of the node is build as follows:
.on("click", function (d) {
if (this._clicked == null) {
// some code
}
}
this._clicked = null;

How to redraw the svg filled with circles in D3?

I'm following this zoom example. In my case, I don't know how to redraw my data for my svg.
In the example, the svg is initialized like this
chartBody.append("svg:path")
.datum(data)
.attr("class", "line")
.attr("d", line);
var line = d3.svg.line()
.x(function (d) {
return x(d.date);
})
.y(function (d) {
return y(d.value);
});
And is redrawn like this in function "zoomed"
svg.select(".line")
.attr("class", "line")
.attr("d", line);
While in my case
Init:
userSvg.selectAll("circle")
.data(userNodes.slice(1))
.enter().append("svg:circle")
.on("click", function(d){ console.log(d.ind); })
.on("mousemove", function(d){ brushOnUser(d.ind); })
.on("mouseout", function(){ brushOnUser(); })
.attr("r", function(d) { return d.radius; })
.attr("cx", function(d, i) { return userNodesScaleX(d.x); })
.attr("cy", function(d, i) { return userNodesScaleY(d.y); })
.style("fill", function(d, i) { return 'gray'; });
Redraw:
userSvg.selectAll("circle")
.attr("class", "circle");
Of course this redraw doesn't work.
So how do I redraw this?
In the redraw function, you need to set all the attributes that are changed. For a line, this is basically only the d attribute, as it contains all the information that determines how the line is drawn. For a circle, this would be the position of the circle and the radius. That is, your redraw function would look something like this.
userSvg.selectAll("circle")
.attr("r", function(d) { return d.radius; })
.attr("cx", function(d, i) { return userNodesScaleX(d.x); })
.attr("cy", function(d, i) { return userNodesScaleY(d.y); });
Depending on what you're changing, you may have to set a different set of attributes. That is, if you're not changing the radius, then there's no need to set that, but if you're changing the fill color, you would need to set that as well.

d3.js - Zoom and Center on Click - Map scales, points do not

I'm adapting the zoomable and clickable map found http://bl.ocks.org/mbostock/2206340 at to plot some points and do some other things. Right now, I'm trying to make it such that on the zoom and click actions, the plotted points also move / honor the zoom. I'm not sure what in the code here is wrong, since I seem to be calling the red.circle and blue.circle objects in the zoom + click -- can anyone identify the issue? Thanks! data.csv is formatted as follows:
lon_0,lat_0,lon_1,lat_1
-122.1430195,37.4418834,-122.415278,37.778643
-122.1430195,37.4418834,-122.40815,37.785034
-122.4194155,37.7749295,-122.4330827,37.7851673
-122.4194155,37.7749295,-122.4330827,37.7851673
-118.4911912,34.0194543,-118.3672828,33.9164666
-121.8374777,39.7284944,-121.8498415,39.7241178
-115.172816,36.114646,-115.078011,36.1586877
and here is the d3.js script.
.background {
fill: none;
pointer-events: all;
}
#states path {
fill: #aaa;
stroke: #fff;
stroke-width: 1.5px;
}
#states path:hover {
stroke: white;
}
</style>
<body>
<script>
var width = 1920/2,
height = 1000/2;
var projection = d3.geo.albersUsa()
.scale(width)
.translate([width / 2, height / 2]);
var path = d3.geo.path()
.projection(projection);
var zoom = d3.behavior.zoom()
.translate(projection.translate())
.scale(projection.scale())
.scaleExtent([height, 50 * height])
.on("zoom", zoom);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.attr("style", "stroke:black; stroke-width:2px");
var states = svg.append("g")
.attr("id", "states")
.call(zoom);
var dataset = [];
states.append("rect")
.attr("class", "background")
.attr("width", width)
.attr("height", height);
d3.json("us-states.json", function(json) {
states.selectAll("path")
.data(json.features)
.enter().append("path")
.attr("d", path)
.on("click", click);
d3.csv("data.csv", function(data) {
states.selectAll(".blue.circle")
.data(data)
.enter()
.append("circle")
.attr("cx", function(d) {
return projection([d["lon_0"], d["lat_0"] ])[0];
})
.attr("cy", function(d) {
return projection([d["lon_0"],d["lat_0"] ])[1];
})
.attr("r", 5)
.attr("class", "blue circle")
.style("fill", "blue");
states.selectAll(".red.circle")
.data(data)
.enter()
.append("circle")
.attr("cx", function(d) {
return projection([+d["lon_1"], +d["lat_1"] ])[0];
})
.attr("cy", function(d) {
return projection([+d["lon_1"],+d["lat_1"] ])[1];
})
.attr("r", 5)
.attr("class", "red circle")
.style("fill", "red");
});
});
function click(d) {
var centroid = path.centroid(d),
translate = projection.translate();
projection.translate([
translate[0] - centroid[0] + width / 2,
translate[1] - centroid[1] + height / 2
]);
zoom.translate(projection.translate());
states.selectAll("path").transition()
.duration(1000)
.attr("d", path);
states.selectAll("red.circle").transition()
.duration(1000)
.attr("d", circle);
states.selectAll("blue.circle").transition()
.duration(1000)
.attr("d", circle);
}
function zoom() {
projection.translate(d3.event.translate).scale(d3.event.scale);
states.selectAll("path").attr("d", path);
states.selectAll("red.circle").attr("d", path);
states.selectAll("blue.circle").attr("d",path);
}
</script>
you're setting the co-ordinates of the circles when you load the map, so when you click the zoom function, your circles are displayed but are not using the same co-ordinates - i think - it will help if you can create a http://bl.ocks.org to see this.
perhaps this could be of help http://bl.ocks.org/nkhine/3150901 only UK, US and Afganistan works, but i am basically re-projecting the secondary map to fit the new zoom level.

Gradient colors from d3.scale.category10() with opacity change on a svg circle?

I am trying to apply the colors from the color = d3.scale.category10(); var to the gradient for the circle svg, what am I doing wrong? All I am seeing is the first color of the color = d3.scale.category10();(which is blue) to 0% opacity gradient but that is all. If I take the gradient out then I see the range I want which is from 1-4? Thanks in advance!
var nodes = d3.range(300).map(function() { return {radius: Math.random() * 12 + 4}; }),
root = nodes[0],
color = d3.scale.category10();
root.radius = 0;
root.fixed = true;
var force = d3.layout.force()
.gravity(0.05)
.charge(function(d, i) { return i ? 0 : -4000; })
.nodes(nodes)
.size([width, height]);
force.start();
var svg = d3.select("body").append("svg:svg")
.attr("width", width)
.attr("height", height);
var gradient = svg.append("defs").append("radialGradient")
.attr("id", "gradient")
.attr("cx", "50%")
.attr("cy", "50%");
gradient.append("stop")
.attr("offset", "75%")
.style("stop-color", function(d, i) { return color(i % 4); })
.attr("stop-opacity", "1");
gradient.append("stop")
.attr("offset", "100%")
.style("stop-color", function(d, i) { return color(i % 4); })
.attr("stop-opacity", ".1");
svg.selectAll("circle")
.data(nodes.slice(1))
.enter().append("circle")
.attr("r", function(d) { return d.radius; })
.style("fill", "url(#gradient)");
Your stop elements don't have any data joined with them, so in your function (d, i), i will always be 0. If you just want the two stops, you could do something like this:
gradient.append("stop")
.attr("offset", "75%")
.style("stop-color", color(0))
.attr("stop-opacity", "1");
gradient.append("stop")
.attr("offset", "100%")
.style("stop-color", color(1))
.attr("stop-opacity", ".1");
If instead you're just trying to fade the edges of your circles, a gradient isn't what you want at all. Instead, you'll need to apply a solid color to each circle, then create a single opacity-only gradient inside a mask, and apply that mask to each circle. Something like this:
var defs = svg.append('defs');
var gradient = defs.append('radialGradient')
.attr('id', 'fadient');
gradient.append('stop')
.attr('offset', '75%')
.attr('stop-color', 'white')
.attr('stop-opacity', 1)
gradient.append('stop')
.attr('offset', '100%')
.attr('stop-color', 'white')
.attr('stop-opacity', .1)
var mask = defs.append('mask')
.attr('id', 'mask')
.attr('maskContentUnits', 'objectBoundingBox')
.append('circle')
.attr('fill', 'url(#fadient)')
.attr('cx', .5)
.attr('cy', .5)
.attr('r', .5)
svg.selectAll("circle")
.data(nodes.slice(1))
.enter().append("circle")
.attr('cx', function (d, i) { return 20 * i })
.attr('cy', 50)
.attr("r", function(d) { return d.radius; })
.attr('mask', 'url(#mask)')
.attr("fill", function (d, i) { return color(i); });

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