I am new to using d3.js. I am trying to append multiple text elements in a svg group. With that, I want to be able to drag the group of multiple text.
So for an example:
export function testNode (config = {}) {
let { svg, rectX, rectY, text1, text2 } = config
var data = [{ x: rectX, y:rectY, label: text1, label2: text2, labelX: rectX + 100, labelY: rectY + 200, labelX2: rectX + 300, labelY2: rectY + 300 }]
var group = svg.append("g")
.selectAll("g")
.data(data)
.enter()
.append("g")
.attr("transform",
"translate(" + 0 + "," + 0 + ")")
.call(d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
group.append("text")
.data(data)
.attr("x", (d) => { return d.labelX })
.attr("y", (d) => { return d.labelY })
.attr("font-size", "1em")
.attr("color", "black")
.text((d) => { return d.label });
group.append("text")
.data(data)
.attr("x", (d) => { return d.labelX2 })
.attr("y", (d) => { return d.labelY2 })
.attr("font-size", ".75em")
.attr("color", "black")
.attr("class", "label")
.text((d) => { return d.metricValue_01 });
function dragStarted() {
d3.select(this).raise().classed("active", true);
}
function dragged(d) {
d3.select(this).select("text")
.attr("x", d.labelX = d3.event.x + 10)
.attr("y", d.labelY = d3.event.y + 20);
d3.select(this).select("text")
.attr("x", d.labelX2 = d3.event.x + 10)
.attr("y", d.labelY2 = d3.event.y + 20);
function dragended() {
d3.select(this).classed("active", false);
}
If I use the selectAll method, the text gets clumped together. Therefore, I was wondering if I can drag the text group in their proper position based on the coordinate I give it (while being dragged). Anyways please let me know if I need to provide any further information. Thank you
If you want to select the second label, but don't want to use selectAll as it selects both, you can give the labels classes when appending and select those when dragging:
d3.select(this).select(".bigLabel")
.attr("x", d.labelX = d3.event.x + 10)
.attr("y", d.labelY = d3.event.y + 20);
d3.select(this).select(".smallLabel")
.attr("x", d.labelX2 = d3.event.x + 10)
.attr("y", d.labelY2 = d3.event.y + 20);
Though of course this will set the same coordinate for both labels unless you specify an offset, as below:
var data = [
{ x: 100, x2: 100, y: 100, y2: 120, label: "label1", value: "17%" },
{ x: 300, x2: 300, y: 200, y2: 220, label: "label2", value: "83%" },
{ x: 100, x2: 100, y: 200, y2: 220, label: "label3", value: "11%" },
{ x: 300, x2: 300, y: 100, y2: 120, label: "label4", value: "96%" }
];
var svg = d3.select("svg");
var labels = svg.selectAll("g")
.data(data)
.enter()
.append("g")
.call(d3.drag()
.on("drag",drag));
labels.append("text")
.attr("font-size", "1em")
.attr("x", function(d) { return d.x;})
.attr("y", function(d) { return d.y;})
.text(function(d) { return d.label; })
.attr("class","label1");
labels.append("text")
.attr("font-size", ".75em")
.attr("x", function(d) { return d.x2;})
.attr("y", function(d) { return d.y2;})
.text(function(d) { return d.value; })
.attr("class","label2");
function drag(d) {
var x = d3.event.x;
var y = d3.event.y;
d3.select(this)
.select(".label1")
.attr("x", function(d) { return d.x = x; })
.attr("y", function(d) { return d.y = y; })
d3.select(this)
.select(".label2")
.attr("x", function(d) { return d.x2 = x; })
.attr("y", function(d) { return d.y2 = y + 20; })
}
text {
text-anchor:middle;
cursor:pointer;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.7.0/d3.min.js"></script>
<svg width="500" height="400"></svg>
I won't dive into the alternative in too much depth, but it applies the drag to the g, positioning both text labels at the same time. This can handle irregular spacing between sibling labels easier than the above:
var data = [
{ x: 100, y: 100, label: "label1", value: "17%" },
{ x: 300, y: 200, label: "label2", value: "83%" },
{ x: 100, y: 200, label: "label3", value: "11%" },
{ x: 300, y: 100, label: "label4", value: "96%" }
];
var svg = d3.select("svg");
var labels = svg.selectAll("g")
.data(data)
.enter()
.append("g")
.attr("transform",function(d) {
return "translate("+[d.x,d.y]+")";
})
.call(d3.drag().on("drag", drag));
labels.append("text")
.attr("font-size", "1em")
.text(function(d) { return d.label; });
labels.append("text")
.attr("font-size", ".75em")
.text(function(d) { return d.value; })
.attr("dy", "1em")
function drag(d) {
d3.select(this)
.attr("transform","translate("+[d.x=d3.event.x,d.y=d3.event.y]+")");
}
text {
text-anchor: middle;
cursor: pointer;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.7.0/d3.min.js"></script>
<svg width="500" height="400"></svg>
Also, there is no need to use append("text").data(data), this is not doing anything - your datum is already bound to the newly appended element
Lastly, you can make this work with selectAll() if you set attributes using the second parameter of any provided function when setting attributes: (d,i)=>... i is the index of the element, so if your sibling labels are regularly spaced, you can use something like:
var data = [
{ x: 100, y: 100, label: "label1", value: "17%" },
{ x: 300, y: 200, label: "label2", value: "83%" },
{ x: 100, y: 200, label: "label3", value: "11%" },
{ x: 300, y: 100, label: "label4", value: "96%" }
];
var svg = d3.select("svg");
var labels = svg.selectAll("g")
.data(data)
.enter()
.append("g")
.call(d3.drag()
.on("drag",drag));
labels.append("text")
.attr("font-size", "1em")
.attr("x", function(d) { return d.x;})
.attr("y", function(d) { return d.y;})
.text(function(d) { return d.label; })
labels.append("text")
.attr("font-size", ".75em")
.attr("x", function(d) { return d.x;})
.attr("y", function(d) { return d.y + 20;})
.text(function(d) { return d.value; })
function drag(d) {
var x = d3.event.x;
var y = d3.event.y;
d3.select(this)
.selectAll("text")
.attr("x", function(d) { return d.x = x; })
.attr("y", function(d,i) { d.y = y;
return d.y + i * 20;
})
}
text {
text-anchor:middle;
cursor:pointer;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/5.7.0/d3.min.js"></script>
<svg width="500" height="400"></svg>
Related
I am completely lost trying to spawn circles with pictures inside that all move within a force.drag. They should be created based on a list of arrays. Any help is really appreciated!
This is my code so far:
var data2 = [
{id: 1, name: "Sachin", pop: 200, x: 0, y: 0, color: 'red', image: "https://picsum.photos/900" },
{id: 2, name: "Murali", pop: 100, x: 200, y: 200, color: 'green', image: "https://random.imagecdn.app/500/500" }
]
var body = d3.select("body")
var svg = body.append("svg")
.attr("width", 800)
.attr("height", 800)
data2.forEach(function(d){
svg.append("clipPath")
.attr('id', d.id)
.append('circle')
.attr("cx", d.x + d.pop /2)
.attr("cy", d.y + d.pop / 2)
.attr("r", d.pop /2)
.attr("", console.log(d))
.style("fill", "green")
.attr("", console.log("done! with this one"))
})
data2.forEach(function(d){
svg.append('image')
.attr('xlink:href',d.image)
.attr('width', d3.sum([d.pop]))
.attr('height', d3.sum([d.pop]))
.attr('x', d.x)
.attr('y', d.y)
.attr('clip-path','url(#' + d.id + ')');
});
But this only gives me this:
But I am trying to make this...
and applying force to it as shown in this snippet:
var data2 = [
{id: 1, name: "Sachin", pop: 20, color: 'red', image: "https://picsum.photos/900" },
{id: 2, name: "Murali", pop: 10, color: 'green', image: "https://random.imagecdn.app/500/500" }
]
var width = 400//Dimensions.get('window').width,
var height = 400//Dimensions.get('window').height,
// create SVG
var body = d3.select("body") //SVG ÄR HELA ARBETSYTAN
var svg = body.append("svg")
.attr("width", width)
.attr("height", height)
//.style("background", "#000000")
// init a force layout, using the nodes and edges in dataset
var force = d3.layout.force()
.nodes(data2)
//.links(data.edges)
.size([width, height])
.charge([-300]) //.linkDistance([100])
.start()
// define 10 random colors
//var colors = d3.scale.category10()*/
var drums = svg.selectAll("circle")
.data(data2)
.enter()
.append("circle")
drums.attr("cx", function(d) { return width/2 }) //för att vara olika för varje item.
.attr("cy", height/2)
.attr("r", function(d) { return d.pop })
.attr("", function(d) { console.log(d) })
.call(force.drag)
drums.style("fill", function(d) {
if (!d.image) {
return ("url(#" + d.id + ")"); //console.log(d.image)
}else{
return d.color
}
})
force.on("tick", function() {
(svg.selectAll('circle') //drums
.attr("cx", function(d) { return d.x })
.attr("cy", function(d) { return d.y })
)
})
drums.on("click", function(d) {
console.log(d)
d3.select(this)
.attr("r" , d3.sum([d3.select(this).attr("r"),10]))
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.0.4/d3.min.js"></script>
Thank you so much for taking a look into this! :)
I am trying to port a d3 chart (which I found online) to v4 but for some reason only the axes are shown and nothing else. The code runs without any errors in the console of Chrome's developer tools and I have hit the wall as I am not an advanced d3 user. Any ideas are highly appreciated.
Here are two jsfiddles, in v3 and v4
https://jsfiddle.net/54mp286c/31/
https://jsfiddle.net/54mp286c/36/
and this is the d3 v4 code
var data = [{
"Cell_Num": 0,
"y": 3,
"x": 2
}, {
"Cell_Num": 1,
"y": 3,
"x": 6
}, {
"Cell_Num": 2,
"y": 7,
"x": 1
}, {
"Cell_Num": 3,
"y": 5,
"x": 5
}]
var margin = {
top: 10,
left: 50,
bottom: 30,
right: 10
},
width = 460 - margin.left - margin.right,
height = 300 - margin.top - margin.bottom;
var scale = {
x: d3.scaleLinear().range([0, width]).nice(),
y: d3.scaleLinear().range([height, 0]).nice()
};
var access = {
x: function(d) {
return d.x;
},
y: function(d) {
return d.y;
}
};
var value = {
x: function(d) {
return scale.x(access.x(d));
},
y: function(d) {
return scale.y(access.y(d));
}
};
var axis = {
x: d3.axisBottom(scale.x),
y: d3.axisLeft(scale.y)
};
var svg = d3.select(".chart").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");
svg.append("g").attr("class", "y axis");
svg.call(renderPlot, data);
function renderPlot(selection, data) {
updateScales(data);
selection.select(".x.axis").call(axis.x)
.attr("transform", "translate(0," + height + ")");
selection.select(".y.axis").call(axis.y);
selection
.call(renderVoronoi, data)
.call(renderPoints, data);
}
function renderVoronoi(selection, data) {
var voronoi = d3.voronoi()
.x(value.x)
.y(value.y)
.extent([
[0, 0],
[width, height]
]);
var polygons = selection.selectAll(".voronoi")
.data(voronoi(data));
polygons.enter().append("path")
.attr("class", "voronoi")
.on("mouseenter", function(d, i) {
var datum = selection.selectAll(".point").data()[i];
selection.call(renderCrosshair, datum);
})
.on("mouseleave", function(d, i) {
selection.selectAll(".crosshair").remove();
});
polygons
.attr("d", d3.line());
polygons.exit()
.remove();
}
function renderCrosshair(selection, datum) {
var lineData = [
// vertical line
[
[value.x(datum), height],
[value.x(datum), 0]
],
// horizontal line
[
[0, value.y(datum)],
[width, value.y(datum)]
]
];
var crosshairs = selection.selectAll(".crosshair.line").data(lineData);
crosshairs.enter().append("path")
.attr("class", "crosshair line");
crosshairs
.attr("d", d3.svg.line());
crosshairs.exit()
.remove();
var labelData = [{
x: -6,
y: value.y(datum) + 4,
text: Math.round(access.y(datum)),
orient: "left"
},
{
x: value.x(datum),
y: height + 16,
text: Math.round(access.x(datum)),
orient: "bottom"
}
];
var labels = selection.selectAll(".crosshair.label").data(labelData);
labels.enter().append("text")
.attr("class", "crosshair label");
labels
.attr("x", function(d) {
return d.x;
})
.attr("y", function(d) {
return d.y;
})
.style("text-anchor", function(d) {
return d.orient === "left" ? "end" : "middle";
})
.text(function(d) {
return d.text;
});
labels.exit().remove();
}
function renderPoints(selection, data) {
var points = selection.selectAll(".point").data(data);
points.enter().append("circle")
.attr("class", "point")
.attr("cx", value.x)
.attr("cy", value.y)
.attr("r", 0)
.style("opacity", 0);
points
.transition().duration(1000)
.attr("cx", value.x)
.attr("cy", value.y)
.attr("r", 2)
.style("opacity", 1);
points.exit()
.transition().duration(1000)
.attr("r", 0)
.style("opacity", 0)
.remove();
}
function updateScales(data) {
var extent = {
x: d3.extent(data, access.x),
y: d3.extent(data, access.y)
};
scale.x.domain([extent.x[0] - 0.5, extent.x[1] + 0.5]);
scale.y.domain([extent.y[0] - 0.5, extent.y[1] + 0.5]);
}
Many thanks!
My last question was answered so quickly and smoothly I thought I'd return with another issue I'm failing to figure out on my own.
I used one of the examples to create this graph:
data = [{ "label": "1", "value": 20 },
{ "label": "2", "value": 50 },
{ "label": "3", "value": 30 },
{ "label": "4", "value": 45 }];
var width = 400,
height = 450;
var outerRadius = 200,
innerRadius = outerRadius / 3,
color = d3.scale.category20c();
var pie = d3.layout.pie()
.value(function (d) { return d.value; });
var pieData = pie(data);
var arc = d3.svg.arc()
.innerRadius(innerRadius);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + outerRadius + "," + (outerRadius + 50) + ")");
svg.append("text")
.attr("x", 0)
.attr("y", -(outerRadius + 10))
.style("text-anchor", "middle")
.text("Title[enter image description here][1]");
svg.selectAll("path")
.data(pieData)
.enter().append("path")
.each(function (d) { d.outerRadius = outerRadius - 20; })
.attr("d", arc)
.attr("fill", function (d, i) { return color(i); })
.on("mouseover", arcTween(outerRadius, 0))
.on("mouseout", arcTween(outerRadius - 20, 150));
svg.selectAll("path")
.append("text")
.attr("transform", function (d) {
d.innerRadius = 0;
d.outerRadius = outerRadius;
return "translate(" + arc.centroid(d) + ")";
})
.attr("fill", "white")
.attr("text-anchor", "middle")
.text(function (d, i) { return data[i].label; });
function arcTween(outerRadius, delay) {
return function () {
d3.select(this).transition().delay(delay).attrTween("d", function (d) {
var i = d3.interpolate(d.outerRadius, outerRadius);
return function (t) { d.outerRadius = i(t); return arc(d); };
});
};
}
The idea being that when you hover over a section on the pie chart (donut chart?) it expands. However, this made my labels dissapear and I can't manage to make them come back. I either get an error, or they just don't show up on the screen (even though I see the tag in the inspector). Any obvious thing I'm missing?
Thanks!
You cannot append a <text> element to a <path> element. It simply doesn't work in an SVG. Even not working, the <text> element will be appended.
That being said, a solution is creating a new "enter" selection for the texts:
svg.selectAll(null)
.data(pieData)
.enter()
.append("text")
.attr("transform", function(d) {
d.innerRadius = 0;
d.outerRadius = outerRadius;
return "translate(" + arc.centroid(d) + ")";
})
.attr("fill", "white")
.attr("text-anchor", "middle")
.text(function(d, i) {
return data[i].label;
});
Here is your updated code:
data = [{
"label": "1",
"value": 20
}, {
"label": "2",
"value": 50
}, {
"label": "3",
"value": 30
}, {
"label": "4",
"value": 45
}];
var width = 400,
height = 450;
var outerRadius = 200,
innerRadius = outerRadius / 3,
color = d3.scale.category20c();
var pie = d3.layout.pie()
.value(function(d) {
return d.value;
});
var pieData = pie(data);
var arc = d3.svg.arc()
.innerRadius(innerRadius);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + outerRadius + "," + (outerRadius + 50) + ")");
svg.append("text")
.attr("x", 0)
.attr("y", -(outerRadius + 10))
.style("text-anchor", "middle")
.text("Title[enter image description here][1]");
svg.selectAll("path")
.data(pieData)
.enter().append("path")
.each(function(d) {
d.outerRadius = outerRadius - 20;
})
.attr("d", arc)
.attr("fill", function(d, i) {
return color(i);
})
.on("mouseover", arcTween(outerRadius, 0))
.on("mouseout", arcTween(outerRadius - 20, 150));
svg.selectAll(null)
.data(pieData)
.enter()
.append("text")
.attr("transform", function(d) {
d.innerRadius = 0;
d.outerRadius = outerRadius;
return "translate(" + arc.centroid(d) + ")";
})
.attr("fill", "white")
.attr("text-anchor", "middle")
.text(function(d, i) {
return data[i].label;
});
function arcTween(outerRadius, delay) {
return function() {
d3.select(this).transition().delay(delay).attrTween("d", function(d) {
var i = d3.interpolate(d.outerRadius, outerRadius);
return function(t) {
d.outerRadius = i(t);
return arc(d);
};
});
};
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
What I'm running now is showing a root node and bunch of nodes connected to it via d3 line element. I'd like to add a caption to the line, since I have it defined and can freely grab it from d.label (in the nodes section in JSON). I'm using the following code:
var width = 500,
height = 500;
var force = d3.layout.force()
.size([width, height])
.charge(-800)
.linkDistance(d => d.distance)
.on("tick", tick);
var svg = d3.select("#target").append("svg")
.attr("width", width)
.attr("height", height)
.attr("class", "mainsvg");
var link = svg.selectAll(".link"),
node = svg.selectAll(".node");
d3.json("test.json", function(error, graph) {
if (error) throw error;
force
.nodes(graph.nodes)
.links(graph.links)
.start();
link = link.data(graph.links)
.enter().append("line")
.attr("class", "link");
node = node.data(graph.nodes)
.enter().append("a")
node.append("g")
.attr("class", "node");
node.append("circle")
.attr("class", "circle")
.attr("r", function(d) { return d.r })
.attr("fill", function(d) { return d.color })
.attr("stroke", function(d){ return d.color });
});
function tick() {
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; });
svg.selectAll(".circle").attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; });
svg.selectAll(".text").attr("x", function(d) { return d.x+d.xoffs; })
.attr("y", function(d) { return d.y+d.yoffs; });
}
Now I've tried using normal <text> elements appended to the edgepath in this fashion:
var edgepaths = svg.selectAll(".edgepath")
.data(graph.links)
.enter()
.append('path')
.attr({'d': function(d) {return 'M '+d.source.x+' '+d.source.y+' L '+ d.target.x +' '+d.target.y},
'class':'edgepath',
'fill-opacity':0,
'stroke-opacity':0,
'fill':'blue',
'stroke':'red',
'id':function(d,i) {return 'edgepath'+i}})
.style("pointer-events", "none");
var edgelabels = svg.selectAll(".edgelabel")
.data(graph.links)
.enter()
.append('text')
.style("pointer-events", "none")
.attr({'class':'edgelabel',
'id':function(d,i){return 'edgelabel'+i},
'dx':80,
'dy':10,
'font-size':10,
'fill':'black'});
edgelabels.append('textPath')
.attr('xlink:href',function(d,i) {return '#edgepath'+i})
.style("pointer-events", "none")
.text(function(d){return d.label});
However, the results I get are weird to say at best. Some labels are too close together, some are missing, but all of them are in the wrong place. How would I move them where they should be? To keep something in mind, I'm looking for a simple way to add caption to the paths I already have drawn out, nothing else. So the method I tried may have been too much, I'm not sure.
The problem is the dx in your edgelabels, that's always the same:
'dx': 80,
Assuming that you're using the code with the link distance (as in your last question), the solution is simple:
'dx':function(d){return d.distance/2},
Check the demo:
var nodes = [{
name: "a"
}, {
name: "b"
}, {
name: "c"
}, {
name: "d"
}, {
name: "e"
}, {
name: "f"
}];
var links = [{
source: 1,
target: 0,
distance: 80,
label: "foo"
}, {
source: 2,
target: 0,
distance: 40,
label: "bar"
}, {
source: 3,
target: 0,
distance: 180,
label: "baz"
}, {
source: 4,
target: 0,
distance: 80,
label: "foobar"
}, {
source: 5,
target: 0,
distance: 90,
label: "foobaz"
}]
var width = 400
height = 300;
var force = d3.layout.force()
.nodes(nodes)
.links(links)
.size([width, height])
.linkDistance(d => d.distance)
.charge(-1000)
.on("tick", tick)
.start();
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
var link = svg.selectAll(".link")
.data(force.links())
.enter().append("line")
.attr("stroke", "black")
.attr("class", "link");
var edgepaths = svg.selectAll(".edgepath")
.data(force.links())
.enter()
.append('path')
.attr({
'd': function(d) {
return 'M ' + d.source.x + ' ' + d.source.y + ' L ' + d.target.x + ' ' + d.target.y
},
'class': 'edgepath',
'fill-opacity': 0,
'stroke-opacity': 0,
'fill': 'blue',
'stroke': 'red',
'id': function(d, i) {
return 'edgepath' + i
}
})
.style("pointer-events", "none");
var edgelabels = svg.selectAll(".edgelabel")
.data(force.links())
.enter()
.append('text')
.style("pointer-events", "none")
.attr({
'class': 'edgelabel',
'id': function(d, i) {
return 'edgelabel' + i
},
'dx': function(d) {
return d.distance / 2
},
'dy': 10,
'font-size': 12,
'fill': 'black'
});
edgelabels.append('textPath')
.attr('xlink:href', function(d, i) {
return '#edgepath' + i
})
.style("pointer-events", "none")
.text(function(d) {
return d.label
});
var node = svg.selectAll(".node")
.data(force.nodes())
.enter().append("g")
.attr("class", "node")
.call(force.drag);
node.append("circle")
.attr("r", (d, i) => i ? 10 : 16)
.style("fill", (d, i) => i ? "teal" : "brown");
function tick() {
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("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")";
});
edgepaths.attr('d', function(d) {
var path = 'M ' + d.source.x + ' ' + d.source.y + ' L ' + d.target.x + ' ' + d.target.y;
return path
});
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
text cannot be a child of path see this question path is not a container... per SVG spec.
best practice would be to first append g elements to your SVG as containers for the bound data, then append the path and text elements to the g so that they are siblings. Then you have complete control over relative positioning, etc.
I am experimenting with D3js Hive plots for the first time and am struggling to understand how to position labels alongside each node on the axes. Please see my fiddle, here:
http://jsfiddle.net/NovasTaylor/jgkqoasm/#base
Using this code I can place the labels for each node on its proper axis. The label (name) is not near its respective node. What code do I need to position the label adjacent to its node?
nodes.append("text")
.attr("class", "text")
.text(function(d) {return d.name;})
// Following is needed to place E,F on the vertical axis toward the top
// of the graph (group=3)
.attr("y", function(d) {
if (d.group === 3) {
return -radius(d.y);
} else {
return radius(d.y);
}
})
.attr("transform", function(d) {
if (d.group !== 3) {
return "rotate(" + (degrees(angle(d.group)) - 90) + ")";
}
})
Any help would be greatly appreciated!
Cheers,
Tim
You should be applying the same transform that's on your node circle elements: a rotation of degrees(angle(d.x)) and an x position of radius(d.y). Further, I would wrap the text in a g and then position that g using those attributes then append a text and rotate it counter to the g so the text is in a proper position:
nodes.append("g")
.attr("class", "text")
.attr("transform", function(d) {
var t = "rotate(" + degrees(angle(d.x)) + ")";
t += "translate(" + radius(d.y) + ",0)";
return t;
})
.append("text")
.attr("transform", function(d) {
var t = "rotate(" + -degrees(angle(d.x)) + ")";
return t;
})
.text(function(d) {return d.name;})
Full working code:
var width = 960,
height = 500,
innerRadius = 40,
outerRadius = 240;
var angle = d3.scale.ordinal().domain(d3.range(4)).rangePoints([0, 2 * Math.PI]),
radius = d3.scale.linear().range([innerRadius, outerRadius]),
color = d3.scale.category10().domain(d3.range(20));
var nodes = [
{name:"A", group:1, x: 0, y: .1},
{name:"B", group:1, x: 0, y: .9},
{name:"C", group:2, x: 1, y: .2},
{name:"D", group:2, x: 1, y: .3},
{name:"E", group:3, x: 2, y: .1},
{name:"F", group:3, x: 2, y: .8}
];
var links = [
{source: nodes[0], target: nodes[2]},
{source: nodes[1], target: nodes[3]},
{source: nodes[2], target: nodes[4]},
{source: nodes[2], target: nodes[5]},
{source: nodes[3], target: nodes[5]},
{source: nodes[4], target: nodes[0]},
{source: nodes[5], target: nodes[1]}
];
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
svg.selectAll(".axis")
.data(d3.range(3))
.enter().append("line")
.attr("class", "axis")
.attr("transform", function(d) { return "rotate(" + degrees(angle(d)) + ")"; })
.attr("x1", radius.range()[0])
.attr("x2", radius.range()[1]);
svg.selectAll(".link")
.data(links)
.enter().append("path")
.attr("class", "link")
.attr("d", d3.hive.link()
.angle(function(d) { return angle(d.x); })
.radius(function(d) { return radius(d.y); }))
.style("stroke", function(d) { return color(d.source.x); });
var nodes = svg.selectAll("g.node")
.data(nodes, function (d) {
return d.name;
});
nodes.enter()
.append("g");
nodes.append("circle")
.attr("class", "node")
.attr("transform", function(d) { return "rotate(" + degrees(angle(d.x)) + ")"; })
.attr("cx", function(d) { return radius(d.y); })
.attr("r", 5)
.style("fill", function(d) { return color(d.x); });
// Append name as label to each node
nodes.append("g")
.attr("class", "text")
.attr("transform", function(d) {
var t = "rotate(" + degrees(angle(d.x)) + ")";
t += "translate(" + radius(d.y) + ",0)";
return t;
})
.append("text")
.attr("transform", function(d) {
var t = "rotate(" + -degrees(angle(d.x)) + ")";
return t;
})
.text(function(d) {return d.name;})
function degrees(radians) {
return radians / Math.PI * 180 - 90;
}
.link {
fill: none;
stroke-width: 1.5px;
}
.axis, .node {
stroke: #000;
stroke-width: 1.5px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
<script src="http://d3js.org/d3.hive.v0.min.js"></script>
I think it would be more easy to put the circles and texts in a group. So there wont need additional calculations for text positions.
var nodes = svg.selectAll("g.node")
.data(nodes, function(d) {
return d.name;
});
var group = nodes.enter()
.append("g")
.attr("transform", function(d) {
return "rotate(" + degrees(angle(d.x)) + ")";
});
group.append("circle")
.attr("class", "node")
.attr("cx", function(d) {
return radius(d.y);
})
.attr("r", 5)
.style("fill", function(d) {
return color(d.x);
});
// Append name as label to each node
group.append("text")
.attr("class", "text")
.attr("dy", "1.2em")
.text(function(d) {
return d.name;
})
.attr("x", function(d, i) {
return radius(d.y);
});
var width = 960,
height = 500,
innerRadius = 40,
outerRadius = 240;
var angle = d3.scale.ordinal().domain(d3.range(4)).rangePoints([0, 2 * Math.PI]),
radius = d3.scale.linear().range([innerRadius, outerRadius]),
color = d3.scale.category10().domain(d3.range(20));
var nodes = [{
name: "A",
group: 1,
x: 0,
y: .1
}, {
name: "B",
group: 1,
x: 0,
y: .9
}, {
name: "C",
group: 2,
x: 1,
y: .2
}, {
name: "D",
group: 2,
x: 1,
y: .3
}, {
name: "E",
group: 3,
x: 2,
y: .1
}, {
name: "F",
group: 3,
x: 2,
y: .8
}];
var links = [{
source: nodes[0],
target: nodes[2]
}, {
source: nodes[1],
target: nodes[3]
}, {
source: nodes[2],
target: nodes[4]
}, {
source: nodes[2],
target: nodes[5]
}, {
source: nodes[3],
target: nodes[5]
}, {
source: nodes[4],
target: nodes[0]
}, {
source: nodes[5],
target: nodes[1]
}];
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
svg.selectAll(".axis")
.data(d3.range(3))
.enter().append("line")
.attr("class", "axis")
.attr("transform", function(d) {
return "rotate(" + degrees(angle(d)) + ")";
})
.attr("x1", radius.range()[0])
.attr("x2", radius.range()[1]);
svg.selectAll(".link")
.data(links)
.enter().append("path")
.attr("class", "link")
.attr("d", d3.hive.link()
.angle(function(d) {
return angle(d.x);
})
.radius(function(d) {
return radius(d.y);
}))
.style("stroke", function(d) {
return color(d.source.x);
});
var nodes = svg.selectAll("g.node")
.data(nodes, function(d) {
return d.name;
});
var group = nodes.enter()
.append("g")
.attr("transform", function(d) {
return "rotate(" + degrees(angle(d.x)) + ")";
});
group.append("circle")
.attr("class", "node")
.attr("cx", function(d) {
return radius(d.y);
})
.attr("r", 5)
.style("fill", function(d) {
return color(d.x);
});
// Append name as label to each node
group.append("text")
.attr("class", "text")
.attr("dy", "1.2em")
.text(function(d) {
return d.name;
})
.attr("x", function(d, i) {
return radius(d.y);
});
function degrees(radians) {
return radians / Math.PI * 180 - 90;
}
.link {
fill: none;
stroke-width: 1.5px;
}
.axis,
.node {
stroke: #000;
stroke-width: 1.5px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
<script src="http://d3js.org/d3.hive.v0.min.js"></script>