Zoom & Pan (only X)

by armensg

HTML

<script src="http://d3js.org/d3.v3.min.js"></script>

CSS

body {
    font: 12px Arial;
}
path {
    stroke: steelblue;
    stroke-width: 2;
    fill: none;
}
.axis path, .axis line {
    fill: none;
    stroke: grey;
    stroke-width: 2;
    shape-rendering: crispEdges;
}
rect {
    fill: #ddd;
}
button {
    position: absolute;
    right: 30px;
    top: 30px;
}

JavaScript

var margin = {top: 30, right: 20, bottom: 30, left: 50},
    width = 600 - margin.left - margin.right,
    height = 300 - margin.top - margin.bottom;

//var parseDate = d3.time.format("%d-%b-%y").parse;

var data = [
    {date:"1400144226",close:"58.13"},
    {date:"1400144227",close:"53.98"},
    {date:"1400144228",close:"67.00"},
    {date:"1400144229",close:"89.70"},
    {date:"1400144230",close:"99.00"}
];

//d3.tsv("data/data.tsv", function(error, data) {
    data.forEach(function(d) {
        d.date = d.date * 1000;
        d.close = +d.close;
    });

    // Scale the range of the data

var x = d3.time.scale()
            .domain(d3.extent(data, function(d) { return d.date; }))
            .range([0, width]);
var y = d3.scale.linear()
            .domain([0, d3.max(data, function(d) { return d.close; })])
            .range([height, 0]);

var yPan = d3.scale.linear()
            .domain([0, d3.max(data, function(d) { return d.close; })])
            .range([height, 0]);


var xAxis = d3.svg.axis().scale(x)
    .orient("bottom")
    .ticks(d3.time.seconds, 1)
    .tickFormat(d3.time.format('%X'))
    .tickSize(1)
    .tickPadding(8);

var yAxis = d3.svg.axis().scale(y)
    .orient("left").ticks(5);

var valueline = d3.svg.line()
    .x(function(d) { return x(d.date); })
    .y(function(d) { return y(d.close); });

var valueLinePan = d3.svg.line()
    .x(function(d) { return x(d.date); })
    .y(function(d) { return y(d.close); });
    
var zoom = d3.behavior.zoom()
    .x(x)
    .y(y)
    .scaleExtent([1, 4])
    .on("zoom", zoomed);

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.top + ")")
        .call(zoom);

svg.append("rect")
        .attr("width", width)
        .attr("height", height)
        .attr("class", "plot");

var clip =...