Skip to content

Instantly share code, notes, and snippets.

@fzyukio

fzyukio/.block

Created July 28, 2018 09:43
Show Gist options
  • Save fzyukio/563059b1bff8901dc3beaf1150934323 to your computer and use it in GitHub Desktop.
Save fzyukio/563059b1bff8901dc3beaf1150934323 to your computer and use it in GitHub Desktop.
Download ZIP
Force-Directed Graph with Drag/Zoom/Pan/Center/Resize/Labels/Shapes/Filter/Highlight
Raw
.block
license: mit
Raw
README.md

Force directed Graph with:

  1. Dragable nodes
  2. Zoom and pan (with maximum effective-size limit for zoomed elements)
  3. Double-click to center node
  4. Resizable window (with zoom/pan-aware relocation of center of gravity)
  5. Text labels (which are not occluded by nodes; flag to set centered/offset)
  6. Properties determine node size and shape, and node and link colors (with default values; flag to set fill/outline).
  7. Filter nodes by shape (c,d,r,s,t,x), by score (l,h,m), if orphan (0), and filter links by score (1,2,3)
  8. Hover to highlight 1st-order neighborhood. Click to fade surroundings
  9. Read graph from json file

forked from eyaler's block: Force-Directed Graph with Drag/Zoom/Pan/Center/Resize/Labels/Shapes/Filter/Highlight

forked from FrissAnalytics's block: Force-Directed Graph with Drag/Zoom/Pan/Center/Resize/Labels/Shapes/Filter/Highlight

Raw
graph.json
{
"graph": [],
"links": [
{"source": 0, "target": 1},
{"source": 0, "target": 2},
{"source": 0, "target": 3},
{"source": 0, "target": 4},
{"source": 0, "target": 5},
{"source": 0, "target": 6},
{"source": 1, "target": 3},
{"source": 1, "target": 4},
{"source": 1, "target": 5},
{"source": 1, "target": 6},
{"source": 2, "target": 4},
{"source": 2, "target": 5},
{"source": 2, "target": 6},
{"source": 3, "target": 5},
{"source": 3, "target": 6},
{"source": 5, "target": 6},
{"source": 0, "target": 7},
{"source": 1, "target": 8},
{"source": 2, "target": 9},
{"source": 3, "target": 10},
{"source": 4, "target": 11},
{"source": 5, "target": 12},
{"source": 6, "target": 13}],
"nodes": [
{"size": 60, "score": 0, "id": "Androsynth", "type": "circle"},
{"size": 10, "score": 0.2, "id": "Chenjesu", "type": "circle"},
{"size": 60, "score": 0.4, "id": "Ilwrath", "type": "circle"},
{"size": 10, "score": 0.6, "id": "Mycon", "type": "circle"},
{"size": 60, "score": 0.8, "id": "Spathi", "type": "circle"},
{"size": 10, "score": 1, "id": "Umgah", "type": "circle"},
{"id": "VUX", "type": "circle"},
{"size": 60, "score": 0, "id": "Guardian", "type": "square"},
{"size": 10, "score": 0.2, "id": "Broodhmome", "type": "square"},
{"size": 60, "score": 0.4, "id": "Avenger", "type": "square"},
{"size": 10, "score": 0.6, "id": "Podship", "type": "square"},
{"size": 60, "score": 0.8, "id": "Eluder", "type": "square"},
{"size": 10, "score": 1, "id": "Drone", "type": "square"},
{"id": "Intruder", "type": "square"}],
"directed": false,
"multigraph": false
}
Raw
index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
overflow:hidden;
margin:0;
}
text {
font-family: sans-serif;
pointer-events: none;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
var w = window.innerWidth;
var h = window.innerHeight;
var keyc = true, keys = true, keyt = true, keyr = true, keyx = true, keyd = true, keyl = true, keym = true, keyh = true, key1 = true, key2 = true, key3 = true, key0 = true
var focus_node = null, highlight_node = null;
var text_center = false;
var outline = false;
var min_score = 0;
var max_score = 1;
var color = d3.scale.linear()
.domain([min_score, (min_score+max_score)/2, max_score])
.range(["lime", "yellow", "red"]);
var highlight_color = "blue";
var highlight_trans = 0.1;
var size = d3.scale.pow().exponent(1)
.domain([1,100])
.range([8,24]);
var force = d3.layout.force()
.linkDistance(60)
.charge(-300)
.size([w,h]);
var default_node_color = "#ccc";
//var default_node_color = "rgb(3,190,100)";
var default_link_color = "#888";
var nominal_base_node_size = 8;
var nominal_text_size = 10;
var max_text_size = 24;
var nominal_stroke = 1.5;
var max_stroke = 4.5;
var max_base_node_size = 36;
var min_zoom = 0.1;
var max_zoom = 7;
var svg = d3.select("body").append("svg");
var zoom = d3.behavior.zoom().scaleExtent([min_zoom,max_zoom])
var g = svg.append("g");
svg.style("cursor","move");
d3.json("graph.json", function(error, graph) {
var linkedByIndex = {};
graph.links.forEach(function(d) {
linkedByIndex[d.source + "," + d.target] = true;
});
function isConnected(a, b) {
return linkedByIndex[a.index + "," + b.index] || linkedByIndex[b.index + "," + a.index] || a.index == b.index;
}
function hasConnections(a) {
for (var property in linkedByIndex) {
s = property.split(",");
if ((s[0] == a.index || s[1] == a.index) && linkedByIndex[property]) return true;
}
return false;
}
force
.nodes(graph.nodes)
.links(graph.links)
.start();
var link = g.selectAll(".link")
.data(graph.links)
.enter().append("line")
.attr("class", "link")
.style("stroke-width",nominal_stroke)
.style("stroke", function(d) {
if (isNumber(d.score) && d.score>=0) return color(d.score);
else return default_link_color; })
var node = g.selectAll(".node")
.data(graph.nodes)
.enter().append("g")
.attr("class", "node")
.call(force.drag)
node.on("dblclick.zoom", function(d) { d3.event.stopPropagation();
var dcx = (window.innerWidth/2-d.x*zoom.scale());
var dcy = (window.innerHeight/2-d.y*zoom.scale());
zoom.translate([dcx,dcy]);
g.attr("transform", "translate("+ dcx + "," + dcy + ")scale(" + zoom.scale() + ")");
});
var tocolor = "fill";
var towhite = "stroke";
if (outline) {
tocolor = "stroke"
towhite = "fill"
}
var circle = node.append("path")
.attr("d", d3.svg.symbol()
.size(function(d) { return Math.PI*Math.pow(size(d.size)||nominal_base_node_size,2); })
.type(function(d) { return d.type; }))
.style(tocolor, function(d) {
if (isNumber(d.score) && d.score>=0) return color(d.score);
else return default_node_color; })
//.attr("r", function(d) { return size(d.size)||nominal_base_node_size; })
.style("stroke-width", nominal_stroke)
.style(towhite, "white");
var text = g.selectAll(".text")
.data(graph.nodes)
.enter().append("text")
.attr("dy", ".35em")
.style("font-size", nominal_text_size + "px")
if (text_center)
text.text(function(d) { return d.id; })
.style("text-anchor", "middle");
else
text.attr("dx", function(d) {return (size(d.size)||nominal_base_node_size);})
.text(function(d) { return '\u2002'+d.id; });
node.on("mouseover", function(d) {
set_highlight(d);
})
.on("mousedown", function(d) { d3.event.stopPropagation();
focus_node = d;
set_focus(d)
if (highlight_node === null) set_highlight(d)
} ).on("mouseout", function(d) {
exit_highlight();
} );
d3.select(window).on("mouseup",
function() {
if (focus_node!==null)
{
focus_node = null;
if (highlight_trans<1)
{
circle.style("opacity", 1);
text.style("opacity", 1);
link.style("opacity", 1);
}
}
if (highlight_node === null) exit_highlight();
});
function exit_highlight()
{
highlight_node = null;
if (focus_node===null)
{
svg.style("cursor","move");
if (highlight_color!="white")
{
circle.style(towhite, "white");
text.style("font-weight", "normal");
link.style("stroke", function(o) {return (isNumber(o.score) && o.score>=0)?color(o.score):default_link_color});
}
}
}
function set_focus(d)
{
if (highlight_trans<1) {
circle.style("opacity", function(o) {
return isConnected(d, o) ? 1 : highlight_trans;
});
text.style("opacity", function(o) {
return isConnected(d, o) ? 1 : highlight_trans;
});
link.style("opacity", function(o) {
return o.source.index == d.index || o.target.index == d.index ? 1 : highlight_trans;
});
}
}
function set_highlight(d)
{
svg.style("cursor","pointer");
if (focus_node!==null) d = focus_node;
highlight_node = d;
if (highlight_color!="white")
{
circle.style(towhite, function(o) {
return isConnected(d, o) ? highlight_color : "white";});
text.style("font-weight", function(o) {
return isConnected(d, o) ? "bold" : "normal";});
link.style("stroke", function(o) {
return o.source.index == d.index || o.target.index == d.index ? highlight_color : ((isNumber(o.score) && o.score>=0)?color(o.score):default_link_color);
});
}
}
zoom.on("zoom", function() {
var stroke = nominal_stroke;
if (nominal_stroke*zoom.scale()>max_stroke) stroke = max_stroke/zoom.scale();
link.style("stroke-width",stroke);
circle.style("stroke-width",stroke);
var base_radius = nominal_base_node_size;
if (nominal_base_node_size*zoom.scale()>max_base_node_size) base_radius = max_base_node_size/zoom.scale();
circle.attr("d", d3.svg.symbol()
.size(function(d) { return Math.PI*Math.pow(size(d.size)*base_radius/nominal_base_node_size||base_radius,2); })
.type(function(d) { return d.type; }))
//circle.attr("r", function(d) { return (size(d.size)*base_radius/nominal_base_node_size||base_radius); })
if (!text_center) text.attr("dx", function(d) { return (size(d.size)*base_radius/nominal_base_node_size||base_radius); });
var text_size = nominal_text_size;
if (nominal_text_size*zoom.scale()>max_text_size) text_size = max_text_size/zoom.scale();
text.style("font-size",text_size + "px");
g.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")");
});
svg.call(zoom);
resize();
//window.focus();
d3.select(window).on("resize", resize).on("keydown", keydown);
force.on("tick", function() {
node.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
text.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
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 resize() {
var width = window.innerWidth, height = window.innerHeight;
svg.attr("width", width).attr("height", height);
force.size([force.size()[0]+(width-w)/zoom.scale(),force.size()[1]+(height-h)/zoom.scale()]).resume();
w = width;
h = height;
}
function keydown() {
if (d3.event.keyCode==32) { force.stop();}
else if (d3.event.keyCode>=48 && d3.event.keyCode<=90 && !d3.event.ctrlKey && !d3.event.altKey && !d3.event.metaKey)
{
switch (String.fromCharCode(d3.event.keyCode)) {
case "C": keyc = !keyc; break;
case "S": keys = !keys; break;
case "T": keyt = !keyt; break;
case "R": keyr = !keyr; break;
case "X": keyx = !keyx; break;
case "D": keyd = !keyd; break;
case "L": keyl = !keyl; break;
case "M": keym = !keym; break;
case "H": keyh = !keyh; break;
case "1": key1 = !key1; break;
case "2": key2 = !key2; break;
case "3": key3 = !key3; break;
case "0": key0 = !key0; break;
}
link.style("display", function(d) {
var flag = vis_by_type(d.source.type)&&vis_by_type(d.target.type)&&vis_by_node_score(d.source.score)&&vis_by_node_score(d.target.score)&&vis_by_link_score(d.score);
linkedByIndex[d.source.index + "," + d.target.index] = flag;
return flag?"inline":"none";});
node.style("display", function(d) {
return (key0||hasConnections(d))&&vis_by_type(d.type)&&vis_by_node_score(d.score)?"inline":"none";});
text.style("display", function(d) {
return (key0||hasConnections(d))&&vis_by_type(d.type)&&vis_by_node_score(d.score)?"inline":"none";});
if (highlight_node !== null)
{
if ((key0||hasConnections(highlight_node))&&vis_by_type(highlight_node.type)&&vis_by_node_score(highlight_node.score)) {
if (focus_node!==null) set_focus(focus_node);
set_highlight(highlight_node);
}
else {exit_highlight();}
}
}
}
});
function vis_by_type(type)
{
switch (type) {
case "circle": return keyc;
case "square": return keys;
case "triangle-up": return keyt;
case "diamond": return keyr;
case "cross": return keyx;
case "triangle-down": return keyd;
default: return true;
}
}
function vis_by_node_score(score)
{
if (isNumber(score))
{
if (score>=0.666) return keyh;
else if (score>=0.333) return keym;
else if (score>=0) return keyl;
}
return true;
}
function vis_by_link_score(score)
{
if (isNumber(score))
{
if (score>=0.666) return key3;
else if (score>=0.333) return key2;
else if (score>=0) return key1;
}
return true;
}
function isNumber(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
</script>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment