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barChartMultiSeries.js
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barChartMultiSeries.js
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import * as d3 from "d3";
import dataTransform from "../dataTransform.js";
import component from "../component.js";
import { createScene } from "../base.js";
/**
* Reusable 3D Multi Series Bar Chart
*
* @module
*
* @example
* let chartHolder = d3.select("#chartholder");
*
* let myData = [...];
*
* let myChart = d3.x3d.chart.barChartMultiSeries();
*
* chartHolder.datum(myData).call(myChart);
*
* @see https://datavizproject.com/data-type/3d-bar-chart/
*/
export default function() {
/* Default Properties */
let width = 500;
let height = 500;
let dimensions = { x: 40, y: 40, z: 40 };
let colors = ["green", "red", "yellow", "steelblue", "orange"];
let classed = "d3X3dBarChartMultiSeries";
let labelPosition = "distal";
let debug = false;
/* Scales */
let xScale;
let yScale;
let zScale;
let colorScale;
/* Components */
const viewpoint = component.viewpoint();
const axis = component.axisThreePlane();
const bars = component.barsMultiSeries();
const light = component.light();
/**
* Initialise Data and Scales
*
* @private
* @param {Array} data - Chart data.
*/
const init = function(data) {
const { rowKeys, columnKeys, valueMax } = dataTransform(data).summary();
const valueExtent = [0, valueMax];
const { x: dimensionX, y: dimensionY, z: dimensionZ } = dimensions;
xScale = d3.scaleBand()
.domain(columnKeys)
.range([0, dimensionX])
.padding(0.5)
.align(0.75);
yScale = d3.scaleLinear()
.domain(valueExtent)
.range([0, dimensionY])
.nice();
zScale = d3.scaleBand()
.domain(rowKeys.reverse())
.range([0, dimensionZ])
.padding(0.5)
.align(0.75);
colorScale = d3.scaleOrdinal()
.domain(columnKeys)
.range(colors);
};
/**
* Constructor
*
* @constructor
* @alias barChartMultiSeries
* @param {d3.selection} selection - The chart holder D3 selection.
*/
const my = function(selection) {
const layers = ["axis", "bars"];
const scene = createScene(selection, layers, classed, width, height, debug);
selection.each((data) => {
init(data);
// Add Viewpoint
viewpoint.centerOfRotation([dimensions.x / 2, dimensions.y / 2, dimensions.z / 2]);
scene.call(viewpoint);
// Add Axis
axis.xScale(xScale)
.yScale(yScale)
.zScale(zScale)
.labelPosition(labelPosition);
scene.select(".axis")
.call(axis);
// Add Bars
bars.xScale(xScale)
.yScale(yScale)
.zScale(zScale)
.colors(colors);
scene.select(".bars")
.datum(data)
.call(bars);
// Add Light
scene.call(light);
});
};
/**
* Width Getter / Setter
*
* @param {number} _v - X3D canvas width in px.
* @returns {*}
*/
my.width = function(_v) {
if (!arguments.length) return width;
width = _v;
return this;
};
/**
* Height Getter / Setter
*
* @param {number} _v - X3D canvas height in px.
* @returns {*}
*/
my.height = function(_v) {
if (!arguments.length) return height;
height = _v;
return this;
};
/**
* Dimensions Getter / Setter
*
* @param {{x: number, y: number, z: number}} _v - 3D object dimensions.
* @returns {*}
*/
my.dimensions = function(_v) {
if (!arguments.length) return dimensions;
dimensions = _v;
return this;
};
/**
* X Scale Getter / Setter
*
* @param {d3.scale} _v - D3 scale.
* @returns {*}
*/
my.xScale = function(_v) {
if (!arguments.length) return xScale;
xScale = _v;
return my;
};
/**
* Y Scale Getter / Setter
*
* @param {d3.scale} _v - D3 scale.
* @returns {*}
*/
my.yScale = function(_v) {
if (!arguments.length) return yScale;
yScale = _v;
return my;
};
/**
* Z Scale Getter / Setter
*
* @param {d3.scale} _v - D3 scale.
* @returns {*}
*/
my.zScale = function(_v) {
if (!arguments.length) return zScale;
zScale = _v;
return my;
};
/**
* Color Scale Getter / Setter
*
* @param {d3.scale} _v - D3 color scale.
* @returns {*}
*/
my.colorScale = function(_v) {
if (!arguments.length) return colorScale;
colorScale = _v;
return my;
};
/**
* Colors Getter / Setter
*
* @param {Array} _v - Array of colours used by color scale.
* @returns {*}
*/
my.colors = function(_v) {
if (!arguments.length) return colors;
colors = _v;
return my;
};
/**
* Label Position Getter / Setter
*
* @param {string} _v - Position ("proximal" or "distal")
* @returns {*}
*/
my.labelPosition = function(_v) {
if (!arguments.length) return labelPosition;
labelPosition = _v;
return my;
};
/**
* Debug Getter / Setter
*
* @param {boolean} _v - Show debug log and stats. True/False.
* @returns {*}
*/
my.debug = function(_v) {
if (!arguments.length) return debug;
debug = _v;
return my;
};
return my;
}