npm install d3-line-chart-plugind3-line-chart-plugin
===
A reimplementation of Mike's Line Chart with the plugin infrastructure of D3v4.
The goal for this package is to serve as a reference for creating reusable and versioned D3 charts that that can be distributed through npm.
If you use NPM, npm install d3-line-chart-plugin. Otherwise, download the latest release.
Its best to check out the example/index.html file for how this plugin works in practice.
Note: The example makes use of d3-svg which removes the boilerplate of creating a svg element. This library lets the example work by only using D3 plugins, and not the library as a whole.
The chart is a function that can chain several functions together and is ultimately callable by a d3_select.select-ed element.
``js
var svg = d3_select.select('svg')
.attr('width', 700)
.attr('height', 400);
var data = [{date: new Date('2010-01-01'), frequency: 0.08}, ....];
var barChart = d3_line_chart.chart()
.width(700)
.height(400)
.margin({top: 20, right: 30, bottom: 30, left: 40})
.xValue(function(d) {
return d.date;
})
.yValue(function(d) {
return d.frequency;
});
svg.datum(data) // NOTE: datum not data
.call(barChart);
`
#### d3_line_chart.chart()
Creates and returns a new chart.
##### chart.xValue([xValue])
Sets or returns the x value accessor for the data. Currently only Date objects will cause the chart to render correctly.
##### chart.yValue([yValue])
Sets or returns the y value accessor for the data.
##### chart.width([width])
Sets or returns the width of the chart.
##### chart.height([height])
Sets or returns the height of the chart.
##### chart.margin([margin])
Sets or returns the margins of the chart.
margin is a object with the format: {top: 0, bottom: 0, left: 0, right: 0}.
##### chart.x([x]), chart.y([y])
Sets or returns the x, y scales that are used to render the chart. Defaults:
`js`
x = d3_scale.scaleTime();
y = d3_scale.scaleLinear();
##### chart.xDomain([domain]), chart.yDomain([domain])
Sets or returns the domains to be used for the scales of the x and y axis. If these are not specified then the domains are calculated at render time in the following way:
`js`
x_domain = extent(data, xValue);
y_domain = [0, max(data, yValue)];
##### chart.g()
Returns the g element that contains all elements in the chart. This element is scaled and translated based on the margin` property.
##### chart.xAxis(), chart.yAxis()
Returns the x or y axis objects that the chart will use for rendering. These methods are useful for altering the tick formatting and properties for the chart before it gets rendered.
MIT