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@mbostock mbostock/.block
Last active Jan 29, 2018

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Pan & Zoom Axes
license: gpl-3.0
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.axis path {
display: none;
}
.axis line {
stroke-opacity: 0.3;
shape-rendering: crispEdges;
}
.view {
fill: url(#gradient);
stroke: #000;
}
button {
position: absolute;
top: 20px;
left: 20px;
}
</style>
<button>Reset</button>
<svg width="960" height="500">
<defs>
<linearGradient id="gradient" x1="0%" y1="0%" x2="100%" y2="100%">
<stop offset="0.0%" stop-color="#2c7bb6"></stop>
<stop offset="12.5%" stop-color="#00a6ca"></stop>
<stop offset="25.0%" stop-color="#00ccbc"></stop>
<stop offset="37.5%" stop-color="#90eb9d"></stop>
<stop offset="50.0%" stop-color="#ffff8c"></stop>
<stop offset="62.5%" stop-color="#f9d057"></stop>
<stop offset="75.0%" stop-color="#f29e2e"></stop>
<stop offset="87.5%" stop-color="#e76818"></stop>
<stop offset="100.0%" stop-color="#d7191c"></stop>
</linearGradient>
</defs>
</svg>
<script src="https://d3js.org/d3.v5.min.js"></script>
<script>
var svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height");
var zoom = d3.zoom()
.scaleExtent([1, 40])
.translateExtent([[-100, -100], [width + 90, height + 100]])
.on("zoom", zoomed);
var x = d3.scaleLinear()
.domain([-1, width + 1])
.range([-1, width + 1]);
var y = d3.scaleLinear()
.domain([-1, height + 1])
.range([-1, height + 1]);
var xAxis = d3.axisBottom(x)
.ticks((width + 2) / (height + 2) * 10)
.tickSize(height)
.tickPadding(8 - height);
var yAxis = d3.axisRight(y)
.ticks(10)
.tickSize(width)
.tickPadding(8 - width);
var view = svg.append("rect")
.attr("class", "view")
.attr("x", 0.5)
.attr("y", 0.5)
.attr("width", width - 1)
.attr("height", height - 1);
var gX = svg.append("g")
.attr("class", "axis axis--x")
.call(xAxis);
var gY = svg.append("g")
.attr("class", "axis axis--y")
.call(yAxis);
d3.select("button")
.on("click", resetted);
svg.call(zoom);
function zoomed() {
view.attr("transform", d3.event.transform);
gX.call(xAxis.scale(d3.event.transform.rescaleX(x)));
gY.call(yAxis.scale(d3.event.transform.rescaleY(y)));
}
function resetted() {
svg.transition()
.duration(750)
.call(zoom.transform, d3.zoomIdentity);
}
</script>
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