Reputation: 289
I am working on d3.js and facing two issue. I am unable to label nodes and show arrow on edges.
Here is my code :
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.links line {
stroke: #999;
stroke-opacity: 0.6;
}
.nodes circle {
stroke: #fff;
stroke-width: 1.5px;
}
</style>
<svg width="960" height="600"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
var graph = {
"nodes": [
{"number": "3006307180"},
{"number": "3215838129"},
{"number": "3216716348"},
{"number": "3217209263"},
{"number": "3212901630"},
{"number": "3035289939"}
],
"links": [
{"source": "3006307180", "target": "3215838129"},
{"source": "3216716348", "target": "3215838129"},
{"source": "3216716348", "target": "3217209263"},
{"source": "3212901630", "target": "3217209263"},
{"source": "3212901630", "target": "3035289939"}
]
};
var svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height");
var color = d3.scaleOrdinal(d3.schemeCategory20);
var simulation = d3.forceSimulation()
.force("link", d3.forceLink().id(function(d) { return d.number; }))
.force("charge", d3.forceManyBody()
.strength(-400))
.force("center", d3.forceCenter(width / 2, height / 2));
var link = svg.append("g")
.attr("class", "links")
.selectAll("line")
.data(graph.links)
.enter().append("line")
.attr("stroke-width", function(d) { return Math.sqrt(d.value); });
var node = svg.append("g")
.attr("class", "nodes")
.selectAll("circle")
.data(graph.nodes)
.enter().append("circle")
.attr("r", 15)
.attr("fill", function(d) { return color(d.group); })
.call(d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
node.append("title")
.text(function(d) { return d.number; });
simulation
.nodes(graph.nodes)
.on("tick", ticked);
simulation.force("link")
.links(graph.links);
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; });
}
function dragstarted(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
function dragged(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
function dragended(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = null;
d.fy = null;
}
</script>
Here on this line node.append("title").text(function(d) { return d.number; });
It clearly show the nodes label on mouse over in tool tip BUT I want to show label beside OR on node. I have tried to replace title with text and nothing happens.
Second issue is I need to show arrow, for this I use:
svg.append("g").selectAll("marker")
.data(["end"])
.enter().append("svg:marker")
.attr("id", String)
.attr("viewBox", "0 -5 10 10")
.attr("refX", 15)
.attr("refY", -1.5)
.attr("markerWidth", 6)
.attr("markerHeight", 6)
.attr("orient", "auto")
.append("svg:path")
.attr("d", "M0,-5L10,0L0,5");
and added this attribute in links .attr("marker-end", "url(#end)");
BUT nothing shows on edges.
These are the answers from almost all of the questions asked here related to my issue. I have gone through almost all of the questions BUT nothing solves my problem. Please any idea, how to do it ? What i am doing wrong here ?
Upvotes: 1
Views: 767
Reputation: 289
Working code for above question with labeled nodes and arrows on edges
Thought, I Should post my complete solution my self here.
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.links line {
stroke: #999;
stroke-width: 3px;
stroke-opacity: 0.6;
}
.nodes circle {
stroke: #fff;
stroke-width: 1.5px;
}
</style>
<svg width="1000" height="600"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
var graph = {
"nodes": [
{"number": "3006307180"},
{"number": "3215838129"},
{"number": "3216716348"},
{"number": "3217209263"},
{"number": "3212901630"},
{"number": "3035289939"}
],
"links": [
{"source": "3006307180", "target": "3215838129", "value": "1440"},
{"source": "3216716348", "target": "3215838129", "value": "19870"},
{"source": "3216716348", "target": "3217209263", "value": "6177"},
{"source": "3212901630", "target": "3217209263", "value": "17236"},
{"source": "3212901630", "target": "3035289939", "value": "600"}
]
};
var svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height");
var color = d3.scaleOrdinal(d3.schemeCategory20c);
var simulation = d3.forceSimulation()
.force("link", d3.forceLink().id(function(d) { return d.number; }))
.force("charge", d3.forceManyBody()
.strength(-400))
.force("center", d3.forceCenter(width / 2, height / 2));
var link = svg.append("g")
.attr("class", "links")
.selectAll("line")
.data(graph.links)
.enter().append("line")
.attr("stroke-width", function(d) { return Math.sqrt(d.value); });
var node = svg.append("g")
.attr("class", "nodes")
.selectAll("circle")
.data(graph.nodes)
.enter().append("circle")
.attr("r", 15)
.attr("fill", function(d) { return color(d.group); })
.call(d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
var label = svg.selectAll(".mytext")
.data(graph.nodes)
.enter()
.append("text")
.text(function (d) { return d.number; })
.style("text-anchor", "middle")
.style("fill", "#555")
.style("font-family", "Arial")
.style("font-size", 10);
simulation
.nodes(graph.nodes)
.on("tick", ticked);
simulation.force("link")
.links(graph.links);
svg.append("svg:defs").selectAll("marker")
.data(["end"])
.enter().append("svg:marker")
.attr("id", String)
.attr("viewBox", "0 -5 10 10")
.attr("refX", 18)
.attr("refY", 0)
.attr("markerWidth", 6)
.attr("markerHeight", 6)
.attr("orient", "auto")
.append("svg:path")
.attr("d", "M0,-5L10,0L0,5");
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; })
.attr("marker-end", "url(#end)");
node
.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; });
}
function dragstarted(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
function dragged(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
function dragended(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = null;
d.fy = null;
}
</script>
Upvotes: 0
Reputation: 102219
In SVG, circles are not container elements. That means that you cannot append a text element to a circle element.
The traditional solution here is turning node
a group selection, to which you can append both circles and texts:
var node = svg.selectAll(null)
.data(graph.nodes)
.enter().append("g")
.attr("class", "nodes");
var circle = node.append("circle")
.attr("r", 15)
.attr("fill", function(d) {
return color(d.group);
}).call(d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
var text = node.append("text")
.text(function(d) {
return d.number;
});
Then, inside the ticked
function, translate the whole groups.
Here is your code with that change:
var graph = {
"nodes": [{
"number": "3006307180"
}, {
"number": "3215838129"
}, {
"number": "3216716348"
}, {
"number": "3217209263"
}, {
"number": "3212901630"
}, {
"number": "3035289939"
}],
"links": [{
"source": "3006307180",
"target": "3215838129"
}, {
"source": "3216716348",
"target": "3215838129"
}, {
"source": "3216716348",
"target": "3217209263"
}, {
"source": "3212901630",
"target": "3217209263"
}, {
"source": "3212901630",
"target": "3035289939"
}]
};
var svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height");
var color = d3.scaleOrdinal(d3.schemeCategory20);
var simulation = d3.forceSimulation()
.force("link", d3.forceLink().id(function(d) {
return d.number;
}))
.force("charge", d3.forceManyBody()
.strength(-400))
.force("center", d3.forceCenter(width / 2, height / 2));
var link = svg.append("g")
.attr("class", "links")
.selectAll("line")
.data(graph.links)
.enter().append("line")
.attr("stroke-width", function(d) {
return Math.sqrt(d.value);
});
var node = svg.selectAll(null)
.data(graph.nodes)
.enter().append("g")
.attr("class", "nodes");
var circle = node.append("circle")
.attr("r", 15)
.attr("fill", function(d) {
return color(d.group);
})
.call(d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
var text = node.append("text")
.attr("dx", "1em")
.text(function(d) {
return d.number;
});
simulation
.nodes(graph.nodes)
.on("tick", ticked);
simulation.force("link")
.links(graph.links);
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("transform", function(d) {
return "translate(" + d.x + "," + d.y + ")";
});
}
function dragstarted(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
function dragged(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
function dragended(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = null;
d.fy = null;
}
.links line {
stroke: #999;
stroke-opacity: 0.6;
}
.nodes circle {
stroke: #fff;
stroke-width: 1.5px;
}
<svg width="600" height="400"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
Upvotes: 1