You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
306 lines
8.4 KiB
306 lines
8.4 KiB
var DataSet = require('../DataSet');
|
|
var DataView = require('../DataView');
|
|
var Point3d = require('./Point3d');
|
|
var Range = require('./Range');
|
|
|
|
|
|
/**
|
|
* Creates a container for all data of one specific 3D-graph.
|
|
*
|
|
* On construction, the container is totally empty; the data
|
|
* needs to be initialized with method initializeData().
|
|
* Failure to do so will result in the following exception begin thrown
|
|
* on instantiation of Graph3D:
|
|
*
|
|
* Error: Array, DataSet, or DataView expected
|
|
*
|
|
* @constructor
|
|
*/
|
|
function DataGroup() {
|
|
this.dataTable = null; // The original data table
|
|
}
|
|
|
|
|
|
/**
|
|
* Initializes the instance from the passed data.
|
|
*
|
|
* Calculates minimum and maximum values and column index values.
|
|
*
|
|
* The graph3d instance is used internally to access the settings for
|
|
* the given instance.
|
|
* TODO: Pass settings only instead.
|
|
*
|
|
* @param {Graph3D} graph3d Reference to the calling Graph3D instance.
|
|
* @param {Array | DataSet | DataView} rawData The data containing the items for
|
|
* the Graph.
|
|
* @param {Number} style Style Number
|
|
*/
|
|
DataGroup.prototype.initializeData = function(graph3d, rawData, style) {
|
|
// unsubscribe from the dataTable
|
|
if (this.dataSet) {
|
|
this.dataSet.off('*', this._onChange);
|
|
}
|
|
|
|
if (rawData === undefined)
|
|
return;
|
|
|
|
if (Array.isArray(rawData)) {
|
|
rawData = new DataSet(rawData);
|
|
}
|
|
|
|
var data;
|
|
if (rawData instanceof DataSet || rawData instanceof DataView) {
|
|
data = rawData.get();
|
|
}
|
|
else {
|
|
throw new Error('Array, DataSet, or DataView expected');
|
|
}
|
|
|
|
if (data.length == 0)
|
|
return;
|
|
|
|
this.dataSet = rawData;
|
|
this.dataTable = data;
|
|
|
|
// subscribe to changes in the dataset
|
|
var me = this;
|
|
this._onChange = function () {
|
|
graph3d.setData(me.dataSet);
|
|
};
|
|
this.dataSet.on('*', this._onChange);
|
|
|
|
// determine the location of x,y,z,value,filter columns
|
|
this.colX = 'x';
|
|
this.colY = 'y';
|
|
this.colZ = 'z';
|
|
|
|
|
|
var withBars = graph3d.hasBars(style);
|
|
|
|
// determine barWidth from data
|
|
if (withBars) {
|
|
if (graph3d.defaultXBarWidth !== undefined) {
|
|
this.xBarWidth = graph3d.defaultXBarWidth;
|
|
}
|
|
else {
|
|
this.xBarWidth = this.getSmallestDifference(data, this.colX) || 1;
|
|
}
|
|
|
|
if (graph3d.defaultYBarWidth !== undefined) {
|
|
this.yBarWidth = graph3d.defaultYBarWidth;
|
|
}
|
|
else {
|
|
this.yBarWidth = this.getSmallestDifference(data, this.colY) || 1;
|
|
}
|
|
}
|
|
|
|
// calculate minima and maxima
|
|
this._initializeRange(data, this.colX, graph3d, withBars);
|
|
this._initializeRange(data, this.colY, graph3d, withBars);
|
|
this._initializeRange(data, this.colZ, graph3d, false);
|
|
|
|
if (data[0].hasOwnProperty('style')) {
|
|
this.colValue = 'style';
|
|
var valueRange = this.getColumnRange(data, this.colValue);
|
|
this._setRangeDefaults(valueRange, graph3d.defaultValueMin, graph3d.defaultValueMax);
|
|
this.valueRange = valueRange;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Collect the range settings for the given data column.
|
|
*
|
|
* This internal method is intended to make the range
|
|
* initalization more generic.
|
|
*
|
|
* TODO: if/when combined settings per axis defined, get rid of this.
|
|
*
|
|
* @private
|
|
*
|
|
* @param {'x'|'y'|'z'} column The data column to process
|
|
* @param {Graph3D} graph3d Reference to the calling Graph3D instance;
|
|
* required for access to settings
|
|
*/
|
|
DataGroup.prototype._collectRangeSettings = function(column, graph3d) {
|
|
var index = ['x', 'y', 'z'].indexOf(column);
|
|
|
|
if (index == -1) {
|
|
throw new Error('Column \'' + column + '\' invalid');
|
|
}
|
|
|
|
var upper = column.toUpperCase();
|
|
|
|
return {
|
|
barWidth : this[column + 'BarWidth'],
|
|
min : graph3d['default' + upper + 'Min'],
|
|
max : graph3d['default' + upper + 'Max'],
|
|
step : graph3d['default' + upper + 'Step'],
|
|
range_label: column + 'Range', // Name of instance field to write to
|
|
step_label : column + 'Step' // Name of instance field to write to
|
|
};
|
|
}
|
|
|
|
|
|
/**
|
|
* Initializes the settings per given column.
|
|
*
|
|
* TODO: if/when combined settings per axis defined, rewrite this.
|
|
*
|
|
* @private
|
|
*
|
|
* @param {DataSet | DataView} data The data containing the items for the Graph
|
|
* @param {'x'|'y'|'z'} column The data column to process
|
|
* @param {Graph3D} graph3d Reference to the calling Graph3D instance;
|
|
* required for access to settings
|
|
* @param {Boolean} withBars True if initializing for bar graph
|
|
*/
|
|
DataGroup.prototype._initializeRange = function(data, column, graph3d, withBars) {
|
|
var NUMSTEPS = 5;
|
|
var settings = this._collectRangeSettings(column, graph3d);
|
|
|
|
var range = this.getColumnRange(data, column);
|
|
if (withBars && column != 'z') { // Safeguard for 'z'; it doesn't have a bar width
|
|
range.expand(settings.barWidth / 2);
|
|
}
|
|
|
|
this._setRangeDefaults(range, settings.min, settings.max);
|
|
this[settings.range_label] = range;
|
|
this[settings.step_label ] = (settings.step !== undefined) ? settings.step : range.range()/NUMSTEPS;
|
|
}
|
|
|
|
|
|
/**
|
|
* Creates a list with all the different values in the data for the given column.
|
|
*
|
|
* If no data passed, use the internal data of this instance.
|
|
*
|
|
* @param {'x'|'y'|'z'} column The data column to process
|
|
* @param {DataSet|DataView|undefined} data The data containing the items for the Graph
|
|
*
|
|
* @returns {Array} All distinct values in the given column data, sorted ascending.
|
|
*/
|
|
DataGroup.prototype.getDistinctValues = function(column, data) {
|
|
if (data === undefined) {
|
|
data = this.dataTable;
|
|
}
|
|
|
|
var values = [];
|
|
|
|
for (var i = 0; i < data.length; i++) {
|
|
var value = data[i][column] || 0;
|
|
if (values.indexOf(value) === -1) {
|
|
values.push(value);
|
|
}
|
|
}
|
|
|
|
return values.sort(function(a,b) { return a - b; });
|
|
};
|
|
|
|
|
|
/**
|
|
* Determine the smallest difference between the values for given
|
|
* column in the passed data set.
|
|
*
|
|
* @param {DataSet|DataView|undefined} data The data containing the items for the Graph
|
|
* @param {'x'|'y'|'z'} column The data column to process
|
|
*
|
|
* @returns {Number|null} Smallest difference value or
|
|
* null, if it can't be determined.
|
|
*/
|
|
DataGroup.prototype.getSmallestDifference = function(data, column) {
|
|
var values = this.getDistinctValues(data, column);
|
|
|
|
// Get all the distinct diffs
|
|
// Array values is assumed to be sorted here
|
|
var smallest_diff = null;
|
|
|
|
for (var i = 1; i < values.length; i++) {
|
|
var diff = values[i] - values[i - 1];
|
|
|
|
if (smallest_diff == null || smallest_diff > diff ) {
|
|
smallest_diff = diff;
|
|
}
|
|
}
|
|
|
|
return smallest_diff;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the absolute min/max values for the passed data column.
|
|
*
|
|
* @param {DataSet|DataView|undefined} data The data containing the items for the Graph
|
|
* @param {'x'|'y'|'z'} column The data column to process
|
|
*
|
|
* @returns {Range} A Range instance with min/max members properly set.
|
|
*/
|
|
DataGroup.prototype.getColumnRange = function(data, column) {
|
|
var range = new Range();
|
|
|
|
// Adjust the range so that it covers all values in the passed data elements.
|
|
for (var i = 0; i < data.length; i++) {
|
|
var item = data[i][column];
|
|
range.adjust(item);
|
|
}
|
|
|
|
return range;
|
|
};
|
|
|
|
|
|
/**
|
|
* Determines the number of rows in the current data.
|
|
*
|
|
* @returns {Number}
|
|
*/
|
|
DataGroup.prototype.getNumberOfRows = function() {
|
|
return this.dataTable.length;
|
|
}
|
|
|
|
|
|
/**
|
|
* Set default values for range
|
|
*
|
|
* The default values override the range values, if defined.
|
|
*
|
|
* Because it's possible that only defaultMin or defaultMax is set, it's better
|
|
* to pass in a range already set with the min/max set from the data. Otherwise,
|
|
* it's quite hard to process the min/max properly.
|
|
*/
|
|
DataGroup.prototype._setRangeDefaults = function (range, defaultMin, defaultMax) {
|
|
if (defaultMin !== undefined) {
|
|
range.min = defaultMin;
|
|
}
|
|
|
|
if (defaultMax !== undefined) {
|
|
range.max = defaultMax;
|
|
}
|
|
|
|
// This is the original way that the default min/max values were adjusted.
|
|
// TODO: Perhaps it's better if an error is thrown if the values do not agree.
|
|
// But this will change the behaviour.
|
|
if (range.max <= range.min) range.max = range.min + 1;
|
|
};
|
|
|
|
|
|
DataGroup.prototype.getDataTable = function() {
|
|
return this.dataTable;
|
|
};
|
|
|
|
|
|
DataGroup.prototype.getDataSet = function() {
|
|
return this.dataSet;
|
|
};
|
|
|
|
|
|
/**
|
|
* Reload the data
|
|
*/
|
|
DataGroup.prototype.reload = function() {
|
|
if (this.dataTable) {
|
|
this.setData(this.dataTable);
|
|
}
|
|
};
|
|
|
|
|
|
module.exports = DataGroup;
|