Ich habe ein visuelles Bild eines Kreisdiagramms mit zwei Ringen. Ich habe folgende hinzugefügt, um zu versuchen Etiketten außerhalb des Diagramms hinzuzufügen:Warum sind diese Etiketten nicht sichtbar?
var arcs = svg.selectAll(".theArc")
arcs.append("text")
.attr("transform", function(d) {
var c = arc.centroid(d),
x = c[0],
y = c[1],
// pythagorean theorem for hypotenuse
h = Math.sqrt(x * x + y * y);
console.log(c, h)
return "translate(" + (x/h * labelr) + ',' +
(y/h * labelr) + ")";
})
.attr("text-anchor", "middle")
.text(function(d,i) {
if (d.name !== 'root') {
return "hello" + d.name;
}
})
.attr("class", "theTxtsOuter")
ich den Text im Inspektoren sehen kann, aber nicht auf der Seite dargestellt - warum ist der Text nicht sichtbar?
Hier ist ein zupfen der visuellen: http://plnkr.co/edit/cnump1mG0XRXxrCur0OT?p=preview
Hier ist der fill-Code für die Funktion, die den Kreisdiagramm erstellt:
function pieChart(dataFile) {
var plot;
var vis;
var width = 400,
height = 400,
radius = Math.min(width, height)/2.1,
color = d3.scale.ordinal()
.range(["#338ABA", "#016da9", "#4c96d5"])
.domain([0, 2]);
var labelr = radius + 5 // radius for label anchor
var div = d3.select("body")
.append("div")
.attr("class", "toolTip");
var arc = d3.svg.arc()
.startAngle(function(d) {
return d.x;
})
.endAngle(function(d) {
return d.x + d.dx;
})
.outerRadius(function(d) {
return (d.y + d.dy)/(radius);
})
.innerRadius(function(d) {
return d.y/(radius);
});
//check if the svg already exists
plot = d3.select("#svgPIEChart")
if (plot.empty()) {
vis = d3.select("#pieChart")
.append("svg")
.attr({
id: "svgPIEChart"
})
} else {
vis = d3.select("#svgPIEChart")
vis.selectAll("*").remove();
};
//group of the svg element
var svg = vis
.append("g")
.attr({
'transform': "translate(" + width/2 + "," + height * .52 + ")"
});
//svg element
vis.attr({
//set the width and height of our visualization (these will be attributes of the <svg> tag
width: width,
height: height
});
d3.text(dataFile, function(text) {
var csv = d3.csv.parseRows(text);
var json = buildHierarchy(csv);
// it seems d3.layout.partition() can be either squares or arcs
var partition = d3.layout.partition()
.sort(null)
.size([2 * Math.PI, radius * radius])
.value(function(d) {
return d.SalesRev;
});
var path = svg.data([json]).selectAll(".theArc")
.data(partition.nodes)
.enter()
.append("path")
.attr("class", "theArc")
.attr("id", function(d, i) {
return "theArc_" + i;
}) //Give each slice a unique ID
.attr("display", function(d) {
return d.depth ? null : "none";
})
.attr("d", arc)
.style("stroke", "#fff")
.style("fill", function(d) {
return color((d.children ? d : d.parent).name);
})
.attr("fill-rule", "evenodd")
.style("opacity", 0.01)
.style("stroke-opacity", 0.01)
.each(stash);
path.transition()
.duration(PIEOBJ.transTime)
.style("opacity", 1)
.style("stroke-opacity", 1)
path
.on("mouseout", mouseout)
.on("mousemove", function(d) {
div.style("left", d3.event.pageX + 10 + "px");
div.style("top", d3.event.pageY - 25 + "px");
div.style("display", "inline-block");
div.html(d.name + "<br>" + PIEOBJ.formatShrtInt(d.SalesRev));
})
var txts = svg.data([json]).selectAll(".theTxts")
.data(partition.nodes)
.enter()
.append("text");
txts
.attr("class", "theTxts")
.attr("dx", 10) //Move the text from the start angle of the arc
.attr("dy", 15) //Move the text down
.style("opacity", 0)
txts
.transition()
.duration(PIEOBJ.transTime)
.style("opacity", 1);
var txtPths = txts.append("textPath")
// .attr("xlink:href", function(d, i) {
.attr("href", function(d, i) {
return "#theArc_" + i;
})
.text(function(d) {
if (d.name === 'root') {
return;
} else if ((d.depth === 1) && (d.dx < (d.name.length * 0.15))) {
return;
} else if ((d.depth === 2) && (d.dx < (d.name.length * 0.1))) {
return;
} else {
return d.name;
}
});
/* ------- TEXT LABELS OUTSIDE THE PIE-------*/
var arcs = svg.selectAll(".theArc")
arcs.append("text")
.attr("transform", function(d) {
var c = arc.centroid(d),
x = c[0],
y = c[1],
// pythagorean theorem for hypotenuse
h = Math.sqrt(x * x + y * y);
console.log(c, h)
return "translate(" + (x/h * labelr) + ',' +
(y/h * labelr) + ")";
})
.attr("text-anchor", "middle")
.text(function(d,i) {
if (d.name !== 'root') {
return "hello" + d.name;
}
})
.attr("class", "theTxtsOuter")
/* ----------------------------------------*/
d3.selectAll("input").on("change", function change() {
function createValueFunc(val) {
// currentMeasure = val;
return function(d) {
return d[val];
};
}
value = createValueFunc(this.value);
PIEOBJ.currentMeasure = this.value;
var path2 = svg.data([json]).selectAll(".theArc");
path2
.data(partition.value(value).nodes)
.transition()
.duration(1500)
.attrTween("d", arcTween)
.each("start", function() {
d3.select(this)
.on("mouseout", null) //CLEARING the listeners
.on("mousemove", null)
})
.each("end", function() {
d3.select(this)
.on("mouseout", mouseout) //attaching the listeners
.on("mousemove", function(d) {
div.style("left", d3.event.pageX + 10 + "px");
div.style("top", d3.event.pageY - 25 + "px");
div.style("display", "inline-block");
div.html(d.name + "<br>" + PIEOBJ.formatShrtInt(value(d)));
})
});
svg.selectAll("textPath")
.text(function(d) {
if (d.name === 'root') {
return;
} else if ((d.depth === 1) && (d.dx < (d.name.length * 0.15))) {
return;
} else if ((d.depth === 2) && (d.dx < (d.name.length * 0.1))) {
return;
} else {
return d.name;
}
});
// the following deletes what was originally created and then recreates the text
// svg.selectAll("#titleX").remove();
});
function mouseout() {
div.style("display", "none"); //<< gets rid of the tooltip <<
};
// Stash the old values for transition.
function stash(d) {
d.x0 = d.x;
d.dx0 = d.dx;
};
// Interpolate the arcs in data space.
function arcTween(a) {
var i = d3.interpolate({
x: a.x0,
dx: a.dx0
}, a);
return function(t) {
var b = i(t);
a.x0 = b.x;
a.dx0 = b.dx;
return arc(b);
};
};
});
};
// // Take a 2-column CSV and transform it into a hierarchical structure suitable
// // for a partition layout.
function buildHierarchy(csv) {
var root = {
"name": "root",
"children": []
};
for (var i = 0; i < csv.length; i++) {
var sequence = csv[i][0];
// var APD = +csv[i][1];
var SalesRev = +csv[i][1];
var Amount = +csv[i][2];
if (isNaN(SalesRev)) { // e.g. if this is a header row
continue;
}
var parts = sequence.split("-");
var currentNode = root;
for (var j = 0; j < parts.length; j++) {
var children = currentNode["children"];
var nodeName = parts[j];
var childNode;
if (j + 1 < parts.length) {
// Not yet at the end of the sequence; move down the tree.
var foundChild = false;
for (var k = 0; k < children.length; k++) {
if (children[k]["name"] == nodeName) {
childNode = children[k];
foundChild = true;
break;
}
}
// If we don't already have a child node for this branch, create it.
if (!foundChild) {
childNode = {
"name": nodeName,
"children": []
};
children.push(childNode);
}
currentNode = childNode;
} else {
// Reached the end of the sequence; create a leaf node.
childNode = {
"name": nodeName,
// "APD": APD,
"SalesRev": SalesRev,
"Amount": Amount
};
children.push(childNode);
}
}
}
root.children.forEach(function(v) {
v.SalesRev = 0;
v.Amount = 0;
v.children.forEach(function(a) {
v.SalesRev += a.SalesRev;
v.Amount += a.Amount;
});
});
return root;
}
Sie haben einige großartige Arbeit Tormi! https://twitter.com/TormiReinson – whytheq
... ut Ich bin sehr neu zu d3 und finde es sehr schwierig zu wissen, wo im Code die von Ihnen vorgeschlagenen Änderungen implementieren? – whytheq
Warum brauchen wir den mittleren Abschnitt Ihres Codes? 'arcs.append (" path ") .attr (" class "," theArc ") .attr (" d ", arc) ...' Ich verstehe, dass der erste Abschnitt die 'g' Elemente hinzufügt und dann verbindet sie zu den Daten ... und der dritte Abschnitt fügt den Text hinzu, aber was ist der mittlere Abschnitt? – whytheq