ChartCanvasSerie.getXAxis

Syntax

getXAxis();

Description

The getXAxis method returns category axis for the chart data series.

Comments

The method returns value of the PP.Ui.ChartCanvasAxis type.

Example

To execute the example, the HTML page must contain the Chart component named chart (see Example of Creating a Histogram). Get chart data series, show value of one of its items, next get information on the category axis and value axis used by the data series:

var serieNumber = 0;
// Get data series
var serie = chart.getSeries()[serieNumber];
// Get the number of data series items
var count = serie.getPoints().length;
// Get the last item in the data series
var point = serie.getPoint(count - 1);
// Show value of the last item in the data series
console.log("Series: " + serieNumber + " item: " + point.getIndex() + " value: " + point.getY());
// Show message informing if the chart category axis is inverted
var xAxis = serie.getXAxis();
var isXAxisInverted = xAxis.getInverted() ? "inverted" : "not inverted";
console.log("Category axis in the chart is " + isXAxisInverted);
// Show message informing if the value axis is primary
var yAxis = serie.getYAxis();
var isYAxisPrimary = yAxis.getPrimary() ? "primary" : "secondary";
console.log("Values of the " + isYAxisPrimary + " chart axis are used");

After executing the example the browser console displays value for one of the chart series items, and also whether the category axis is inverted and whether values of primary axis were used to plot the data series:

Series: 0 item: 4 value: -30

Category axis in the chart is not inverted

Values of the primary chart axis are used