Skip to content

Instantly share code, notes, and snippets.

@jbants
Created September 13, 2015 02:55
Show Gist options
  • Save jbants/6e8f1b885fdea2dc7242 to your computer and use it in GitHub Desktop.
Save jbants/6e8f1b885fdea2dc7242 to your computer and use it in GitHub Desktop.
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>D3 Demo</title>
</head>
<style>
body { font: 12px Arial;}
path {
stroke: steelblue;
stroke-width: 2;
fill: none;
}
.axis path,
.axis line {
fill: none;
stroke: grey;
stroke-width: 1;
shape-rendering: crispEdges;
}
</style>
<body>
<div id="option">
<input name="updateButton"
type="button"
value="Update"
onclick="updateData()" />
</div>
</style>
<body>
</body>
</html>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
<script>
var dataFlag = 1
var JSONData = [
{ "id": 1, "date": "2011-07-14", "amount": 12000},
{ "id": 2, "date": "2011-08-14", "amount": 2000},
{ "id": 3, "date": "2012-09-14", "amount": 17000},
{ "id": 4, "date": "2012-11-14", "amount": 15000},
{ "id": 5, "date": "2013-02-14", "amount": 16000}
]
var JSONData2 = [
{ "id": 1, "date": "2011-07-14", "amount": 2000},
{ "id": 2, "date": "2011-08-14", "amount": 2300},
{ "id": 3, "date": "2013-09-14", "amount": 1000},
{ "id": 4, "date": "2014-11-14", "amount": 16000},
{ "id": 5, "date": "2015-02-14", "amount": 100}
]
// set up base when paae is loaded
// Set the dimensions of the canvas / graph
var margin = {top: 30, right: 20, bottom: 30, left: 50},
width = 600 - margin.left - margin.right,
height = 270 - margin.top - margin.bottom;
// Parse the date / time
var parseDate = d3.time.format("%Y-%m-%d").parse;
// Set the ranges
var x = d3.time.scale().range([0, width]);
var y = d3.scale.linear().range([height, 0]);
// Define the axes
var xAxis = d3.svg.axis().scale(x)
.orient("bottom").ticks(5);
var yAxis = d3.svg.axis().scale(y)
.orient("left").ticks(5);
// Define the line
var valueline = d3.svg.line()
.x(function(d) { return x(parseDate(d.date)); })
.y(function(d) { return y(d.amount); });
// Adds the svg canvas
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 + ")");
function init(){
// Get the data
data = JSONData
// Scale the range of the data
x.domain(d3.extent(data, function(d) { return parseDate(d.date); }));
y.domain([0, d3.max(data, function(d) { return d.amount; })]);
// Add the valueline path.
svg.append("path")
.attr("class", "line")
.attr("d", valueline(data));
// Add the X Axis
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
// Add the Y Axis
svg.append("g")
.attr("class", "y axis")
.call(yAxis);
console.log(data)
}
// ** Update data section (Called from the onclick)
function updateData1() {
data = JSONData
// Get the data again
// Scale the range of the data again
x.domain(d3.extent(data, function(d) { return parseDate(d.date); }));
y.domain([0, d3.max(data, function(d) { return d.amount; })]);
// Select the section we want to apply our changes to
var svg = d3.select("body").transition();
// Make the changes
svg.select(".line") // change the line
.duration(750)
.attr("d", valueline(data));
svg.select(".x.axis") // change the x axis
.duration(750)
.call(xAxis);
svg.select(".y.axis") // change the y axis
.duration(750)
.call(yAxis);
}
function updateData2() {
data = JSONData2
// Get the data again
// Scale the range of the data again
x.domain(d3.extent(data, function(d) { return parseDate(d.date); }));
y.domain([0, d3.max(data, function(d) { return d.amount; })]);
// Select the section we want to apply our changes to
var svg = d3.select("body").transition();
// Make the changes
svg.select(".line") // change the line
.duration(750)
.attr("d", valueline(data));
svg.select(".x.axis") // change the x axis
.duration(750)
.call(xAxis);
svg.select(".y.axis") // change the y axis
.duration(750)
.call(yAxis);
}
function updateData(){
if (dataFlag == 1){
updateData2()
dataFlag = 2
}
else {
updateData1()
dataFlag = 1
}
}
init()
</script>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment