Numeric.html
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<pre class="prettyprint lang-js"><span id='Ext-chart-axis-Numeric'>/**
</span> * @class Ext.chart.axis.Numeric
*
* An axis to handle numeric values. This axis is used for quantitative data as
* opposed to the category axis. You can set mininum and maximum values to the
* axis so that the values are bound to that. If no values are set, then the
* scale will auto-adjust to the values.
*
* @example
* var store = Ext.create('Ext.data.JsonStore', {
* fields: ['name', 'data1', 'data2', 'data3', 'data4', 'data5'],
* data: [
* {'name':'metric one', 'data1':10, 'data2':12, 'data3':14, 'data4':8, 'data5':13},
* {'name':'metric two', 'data1':7, 'data2':8, 'data3':16, 'data4':10, 'data5':3},
* {'name':'metric three', 'data1':5, 'data2':2, 'data3':14, 'data4':12, 'data5':7},
* {'name':'metric four', 'data1':2, 'data2':14, 'data3':6, 'data4':1, 'data5':23},
* {'name':'metric five', 'data1':27, 'data2':38, 'data3':36, 'data4':13, 'data5':33}
* ]
* });
*
* Ext.create('Ext.chart.Chart', {
* renderTo: Ext.getBody(),
* width: 500,
* height: 300,
* store: store,
* axes: [{
* type: 'Numeric',
* grid: true,
* position: 'left',
* fields: ['data1', 'data2', 'data3', 'data4', 'data5'],
* title: 'Sample Values',
* grid: {
* odd: {
* opacity: 1,
* fill: '#ddd',
* stroke: '#bbb',
* 'stroke-width': 1
* }
* },
* minimum: 0,
* adjustMinimumByMajorUnit: 0
* }, {
* type: 'Category',
* position: 'bottom',
* fields: ['name'],
* title: 'Sample Metrics',
* grid: true,
* label: {
* rotate: {
* degrees: 315
* }
* }
* }],
* series: [{
* type: 'area',
* highlight: false,
* axis: 'left',
* xField: 'name',
* yField: ['data1', 'data2', 'data3', 'data4', 'data5'],
* style: {
* opacity: 0.93
* }
* }]
* });
*
* In this example we create an axis of Numeric type. We set a minimum value so that
* even if all series have values greater than zero, the grid starts at zero. We bind
* the axis onto the left part of the surface by setting `position` to `left`.
* We bind three different store fields to this axis by setting `fields` to an array.
* We set the title of the axis to _Number of Hits_ by using the `title` property.
* We use a `grid` configuration to set odd background rows to a certain style and even rows
* to be transparent/ignored.
*/
Ext.define('Ext.chart.axis.Numeric', {
/* Begin Definitions */
extend: 'Ext.chart.axis.Axis',
alternateClassName: 'Ext.chart.NumericAxis',
/* End Definitions */
type: 'numeric',
alias: 'axis.numeric',
uses: ['Ext.data.Store'],
constructor: function(config) {
var me = this,
hasLabel = !!(config.label && config.label.renderer),
label;
me.callParent([config]);
label = me.label;
if (config.constrain == null) {
me.constrain = (config.minimum != null && config.maximum != null);
}
if (!hasLabel) {
label.renderer = function(v) {
return me.roundToDecimal(v, me.decimals);
};
}
},
roundToDecimal: function(v, dec) {
var val = Math.pow(10, dec || 0);
return Math.round(v * val) / val;
},
<span id='Ext-chart-axis-Numeric-property-minimum'> /**
</span> * The minimum value drawn by the axis. If not set explicitly, the axis
* minimum will be calculated automatically.
*
* @property {Number} minimum
*/
minimum: NaN,
<span id='Ext-chart-axis-Numeric-property-maximum'> /**
</span> * The maximum value drawn by the axis. If not set explicitly, the axis
* maximum will be calculated automatically.
*
* @property {Number} maximum
*/
maximum: NaN,
<span id='Ext-chart-axis-Numeric-cfg-constrain'> /**
</span> * @cfg {Boolean} constrain
* If true, the values of the chart will be rendered only if they belong between minimum and maximum
* If false, all values of the chart will be rendered, regardless of whether they belong between minimum and maximum or not
* Default's true if maximum and minimum is specified.
*/
constrain: true,
<span id='Ext-chart-axis-Numeric-property-decimals'> /**
</span> * The number of decimals to round the value to.
*
* @property {Number} decimals
*/
decimals: 2,
<span id='Ext-chart-axis-Numeric-property-scale'> /**
</span> * The scaling algorithm to use on this axis. May be "linear" or
* "logarithmic". Currently only linear scale is implemented.
*
* @property {String} scale
* @private
*/
scale: "linear",
// @private constrains to datapoints between minimum and maximum only
doConstrain: function() {
var me = this,
store = me.chart.store,
items = store.data.items,
d, dLen, record,
series = me.chart.series.items,
fields = me.fields,
ln = fields.length,
range = me.calcEnds(),
min = range.from, max = range.to, i, l,
useAcum = false,
value, data = [],
addRecord;
for (i = 0, l = series.length; i < l; i++) {
if (series[i].type === 'bar' && series[i].stacked) {
// Do not constrain stacked bar chart.
return;
}
}
for (d = 0, dLen = items.length; d < dLen; d++) {
addRecord = true;
record = items[d];
for (i = 0; i < ln; i++) {
value = record.get(fields[i]);
if (+value < +min) {
addRecord = false;
break;
}
if (+value > +max) {
addRecord = false;
break;
}
}
if (addRecord) {
data.push(record);
}
}
me.chart.substore = Ext.create('Ext.data.Store', { model: store.model });
me.chart.substore.loadData(data); // data records must be loaded (not passed as config above because it's not json)
},
<span id='Ext-chart-axis-Numeric-property-position'> /**
</span> * Indicates the position of the axis relative to the chart
*
* @property {String} position
*/
position: 'left',
<span id='Ext-chart-axis-Numeric-property-adjustMaximumByMajorUnit'> /**
</span> * Indicates whether to extend maximum beyond data's maximum to the nearest
* majorUnit.
*
* @property {Boolean} adjustMaximumByMajorUnit
*/
adjustMaximumByMajorUnit: false,
<span id='Ext-chart-axis-Numeric-property-adjustMinimumByMajorUnit'> /**
</span> * Indicates whether to extend the minimum beyond data's minimum to the
* nearest majorUnit.
*
* @property {Boolean} adjustMinimumByMajorUnit
*/
adjustMinimumByMajorUnit: false,
// applying constraint
processView: function() {
var me = this,
constrain = me.constrain;
if (constrain) {
me.doConstrain();
}
},
// @private apply data.
applyData: function() {
this.callParent();
return this.calcEnds();
}
});
</pre>
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