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Edited
Nov 17, 2022
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gobiz.csv
Type Table, then Shift-Enter. Ctrl-space for more options.
data = {
const text = await FileAttachment("gobiz.csv").text();
const parseDate = d3.utcParse("%d/%m/%Y");
return d3.csvParse(text, ({Id,Name,Tipo,Fecha,Descripcion}) => ({
id: Id,
name: Name,
fecha: parseDate(Fecha),
tipo: +Tipo,
descripcion: Descripcion
}));
}
links@1.csv
Type Table, then Shift-Enter. Ctrl-space for more options.
data2 = {
const text = await FileAttachment("links@1.csv").text();
return d3.csvParse(text, ({Source,Target,Type}) => ({
source: Source,
target: Target,
type: Type
}));
}
// backup
myChart={
const div = html`<div style='max-width: 900px; overflow-x: auto; padding: 0px; margin: 0px;'></div>`;
const svg = d3.select(div)
.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})`);
const subgraphWidth = width*2/8;
const subgraphHeight = height*1/5;
const subgraph = svg.append("g")
.attr("id", "subgraph")
.attr("transform", `translate(${width - subgraphWidth - 20}, 0)`);
subgraph.append("text")
.style("font-size","16px")
//appending little triangles, path object, as arrowhead
//The <defs> element is used to store graphical objects that will be used at a later time
//The <marker> element defines the graphic that is to be used for drawing arrowheads or polymarkers on a given <path>, <line>, <polyline> or <polygon> element.
svg.append('defs').append('marker')
.attr("id",'arrowhead')
.attr('viewBox','-0 -5 10 10') //the bound of the SVG viewport for the current SVG fragment. defines a coordinate system 10 wide and 10 high starting on (0,-5)
.attr('refX',24) // x coordinate for the reference point of the marker. If circle is bigger, this need to be bigger.
.attr('refY',0)
.attr('orient','auto')
.attr('markerWidth',6)
.attr('markerHeight',6)
.attr('xoverflow','visible')
.append('svg:path')
.attr('d', 'M 0,-5 L 10 ,0 L 0,5')
.attr('fill', '#999')
.style('stroke','none');
svg.append("text")
.text("Gobiz")
.attr("text-anchor","middle")
.attr("x",width/2)
.style("font-size","20px")
//create some data
const dataset = {
nodes: data,
links: data2,
};
console.log("dataset is ...",dataset);
// Initialize the links
const link = svg.selectAll(".links")
.data(dataset.links)
.enter()
.append("line")
.attr("class", "links")
.attr("stroke","#999")
.attr("stroke-width","2px")
.style("opacity", 0.8)
.attr("id",d=> "line"+d.source+d.target)
.attr("class", "links")
.attr('marker-end','url(#arrowhead)') //The marker-end attribute defines the arrowhead or polymarker that will be drawn at the final vertex of the given shape.
//The <title> element provides an accessible, short-text description of any SVG container element or graphics element.
//Text in a <title> element is not rendered as part of the graphic, but browsers usually display it as a tooltip.
link.append("title")
.text(d => d.type);
const edgepaths = svg.selectAll(".edgepath") //make path go along with the link provide position for link labels
.data(dataset.links)
.enter()
.append('path')
.attr('class', 'edgepath')
.attr('fill-opacity', 0)
.attr('stroke-opacity', 0)
.attr('id', function (d, i) {return 'edgepath' + i})
.style("pointer-events", "none");
const edgelabels = svg.selectAll(".edgelabel")
.data(dataset.links)
.enter()
.append('text')
.style("pointer-events", "none")
.attr('class', 'edgelabel')
.attr('id', function (d, i) {return 'edgelabel' + i})
.attr('font-size', 10)
.attr('fill', '#aaa');
edgelabels.append('textPath') //To render text along the shape of a <path>, enclose the text in a <textPath> element that has an href attribute with a reference to the <path> element.
.attr('xlink:href', function (d, i) {return '#edgepath' + i})
.style("text-anchor", "middle")
.style("pointer-events", "none")
.attr("startOffset", "50%")
.text(d => d.type);
// Initialize the nodes
const node = svg.selectAll(".nodes")
.data(dataset.nodes)
.enter()
.append("g")
.attr("class", "nodes")
node.call(d3.drag() //sets the event listener for the specified typenames and returns the drag behavior.
.on("start", dragstarted) //start - after a new pointer becomes active (on mousedown or touchstart).
.on("drag", dragged) //drag - after an active pointer moves (on mousemove or touchmove).
);
node.append("circle")
.attr("r", d=> 17)//+ d.runtime/20 )
.attr("id",d=> "circle"+d.id)
.style("stroke", "grey")
.style("stroke-opacity",0.3)
.style("stroke-width", d => 10)
.style("fill", d => colorScale(d.group))
node.append("title")
.text(d => d.id + ": Tipo " + d.tipo + " , Fecha de registro " + d.fecha + ", Descripción:"+ d.descripcion);
node.append("text")
.attr("text-anchor", "middle")
.text(d => d.name);
node.append("text")
.attr("dy",12)
.attr("dx", -8)
.text(d=> d.tipo);
//set up dictionary of neighbors
var neighborTarget= {};
for (var i=0; i < dataset.nodes.length; i++ ){
var id = dataset.nodes[i].id;
neighborTarget[id] = dataset.links.filter(function(d){
return d.source == id;
}).map(function(d){
return d.target;
})
}
var neighborSource = {};
for (var i=0; i < dataset.nodes.length; i++ ){
var id = dataset.nodes[i].id;
neighborSource[id] = dataset.links.filter(function(d){
return d.target == id;
}).map(function(d){
return d.source;
})
}
console.log("neighborSource is ",neighborSource);
console.log("neighborTarget is ",neighborTarget);
node.selectAll("circle").on("click",function(d){
var active = d.active? false : true // toggle whether node is active
, newStroke = active ? "yellow":"grey"
, newStrokeIn = active ? "green":"grey"
, newStrokeOut = active? "red": "grey"
, newOpacity = active? 0.6: 0.3
, subgraphOpacity = active? 0.9:0;
subgraph.selectAll("text")
.text("Nodo: " + d.id + ": Tipo " + d.tipo + " , Fecha de registro " + d.fecha + ", Descripción: "+ d.descripcion)
.call(wrap, 800) // wrap the text in <= 30 pixels
.attr("dy",80)
.attr("dx",-500)
//extract node's id and ids of its neighbors
var id =d.id
, neighborS = neighborSource[id]
, neighborT = neighborTarget[id];
console.log("neighbors is from ",neighborS," to ", neighborT);
d3.selectAll("#circle"+id).style("stroke-opacity", newOpacity);
d3.selectAll("#circle"+id).style("stroke", newStroke);
d3.selectAll("#subgraph").style("opacity",subgraphOpacity)
//highlight the current node and its neighbors
for (var i =0; i < neighborS.length; i++){
d3.selectAll("#line"+neighborS[i]+id).style("stroke", newStrokeIn);
d3.selectAll("#circle"+neighborS[i]).style("stroke-opacity", newOpacity).style("stroke", newStrokeIn);
}
for (var i =0; i < neighborT.length; i++){
d3.selectAll("#line"+id+neighborT[i]).style("stroke", newStrokeOut);
d3.selectAll("#circle"+neighborT[i]).style("stroke-opacity", newOpacity).style("stroke", newStrokeOut);
}
//update whether or not the node is active
d.active =active;
})
//Listen for tick events to render the nodes as they update in your Canvas or SVG.
simulation
.nodes(dataset.nodes)
.on("tick", ticked);
simulation.force("link")
.links(dataset.links);
// This function is run at each iteration of the force algorithm, updating the nodes position (the nodes data array is directly manipulated).
function ticked() {
link.attr("x1", d => d.source.x)
.attr("y1", d => d.source.y)
.attr("x2", d => d.target.x)
.attr("y2", d => d.target.y);
node.attr("transform", d => `translate(${d.x},${d.y})`);
edgepaths.attr('d', d => 'M ' + d.source.x + ' ' + d.source.y + ' L ' + d.target.x + ' ' + d.target.y);
}
//When the drag gesture starts, the targeted node is fixed to the pointer
//The simulation is temporarily “heated” during interaction by setting the target alpha to a non-zero value.
function dragstarted(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();//sets the current target alpha to the specified number in the range [0,1].
d.fy = d.y; //fx - the node’s fixed x-position. Original is null.
d.fx = d.x; //fy - the node’s fixed y-position. Original is null.
}
//When the drag gesture starts, the targeted node is fixed to the pointer
function dragged(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
function wrap(text, width) {
text.each(function () {
var text = d3.select(this),
words = text.text().split(/\s+/).reverse(),
word,
line = [],
lineNumber = 0,
lineHeight = 1.1, // ems
x = text.attr("x"),
y = text.attr("y"),
dy = 0, //parseFloat(text.attr("dy")),
tspan = text.text(null)
.append("tspan")
.attr("x", -50)
.attr("y", 30)
.attr("dy", dy + "em");
while (word = words.pop()) {
line.push(word);
tspan.text(line.join(" "));
if (tspan.node().getComputedTextLength() > width) {
line.pop();
tspan.text(line.join(" "));
line = [word];
tspan = text.append("tspan")
.attr("x", -550)
.attr("y", 40)
.attr("dy", ++lineNumber * lineHeight + dy + "em")
.text(word);
}
}
});
}
return div
}
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
