An extension of this example to include an HTML5 slider in answer to this question.
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Drag + Zoom + Slider
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x | y | |
---|---|---|
100 | 80 | |
80 | 69 | |
130 | 75 | |
90 | 88 | |
110 | 83 | |
140 | 99 | |
60 | 72 | |
40 | 42 | |
120 | 108 | |
70 | 48 | |
50 | 56 |
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
.dot circle { | |
fill: lightsteelblue; | |
stroke: steelblue; | |
stroke-width: 1.5px; | |
} | |
.dot circle.dragging { | |
fill: red; | |
stroke: brown; | |
} | |
.axis line { | |
fill: none; | |
stroke: #ddd; | |
shape-rendering: crispEdges; | |
vector-effect: non-scaling-stroke; | |
} | |
</style> | |
<body> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<script> | |
var margin = {top: -5, right: -5, bottom: -5, left: -5}, | |
width = 960 - margin.left - margin.right, | |
height = 500 - margin.top - margin.bottom; | |
var zoom = d3.behavior.zoom() | |
.scaleExtent([1, 10]) | |
.on("zoom", zoomed); | |
var drag = d3.behavior.drag() | |
.origin(function(d) { return d; }) | |
.on("dragstart", dragstarted) | |
.on("drag", dragged) | |
.on("dragend", dragended); | |
var slider = d3.select("body").append("p").append("input") | |
.datum({}) | |
.attr("type", "range") | |
.attr("value", zoom.scaleExtent()[0]) | |
.attr("min", zoom.scaleExtent()[0]) | |
.attr("max", zoom.scaleExtent()[1]) | |
.attr("step", (zoom.scaleExtent()[1] - zoom.scaleExtent()[0]) / 100) | |
.on("input", slided); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width + margin.left + margin.right) | |
.attr("height", height + margin.top + margin.bottom) | |
.append("g") | |
.attr("transform", "translate(" + margin.left + "," + margin.right + ")") | |
.call(zoom); | |
var rect = svg.append("rect") | |
.attr("width", width) | |
.attr("height", height) | |
.style("fill", "none") | |
.style("pointer-events", "all"); | |
var container = svg.append("g"); | |
container.append("g") | |
.attr("class", "x axis") | |
.selectAll("line") | |
.data(d3.range(0, width, 10)) | |
.enter().append("line") | |
.attr("x1", function(d) { return d; }) | |
.attr("y1", 0) | |
.attr("x2", function(d) { return d; }) | |
.attr("y2", height); | |
container.append("g") | |
.attr("class", "y axis") | |
.selectAll("line") | |
.data(d3.range(0, height, 10)) | |
.enter().append("line") | |
.attr("x1", 0) | |
.attr("y1", function(d) { return d; }) | |
.attr("x2", width) | |
.attr("y2", function(d) { return d; }); | |
d3.tsv("dots.tsv", dottype, function(error, dots) { | |
dot = container.append("g") | |
.attr("class", "dot") | |
.selectAll("circle") | |
.data(dots) | |
.enter().append("circle") | |
.attr("r", 5) | |
.attr("cx", function(d) { return d.x; }) | |
.attr("cy", function(d) { return d.y; }) | |
.call(drag); | |
}); | |
function dottype(d) { | |
d.x = +d.x; | |
d.y = +d.y; | |
return d; | |
} | |
function zoomed() { | |
container.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")"); | |
slider.property("value", d3.event.scale); | |
} | |
function dragstarted(d) { | |
d3.event.sourceEvent.stopPropagation(); | |
d3.select(this).classed("dragging", true); | |
} | |
function dragged(d) { | |
d3.select(this).attr("cx", d.x = d3.event.x).attr("cy", d.y = d3.event.y); | |
} | |
function dragended(d) { | |
d3.select(this).classed("dragging", false); | |
} | |
function slided(d){ | |
zoom.scale(d3.select(this).property("value")) | |
.event(svg); | |
} | |
</script> |
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