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Sencha Charts Essentials

You're reading from   Sencha Charts Essentials Create stunning charts and visualizations for both web and mobile applications

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Product type Paperback
Published in May 2015
Publisher
ISBN-13 9781785289767
Length 214 pages
Edition 1st Edition
Languages
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Author (1):
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Ajit Kumar Ajit Kumar
Author Profile Icon Ajit Kumar
Ajit Kumar
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Toc

A walkthrough of a polar chart – radar

The radar series is rendered using the polar chart as it works with the polar coordinate system. It uses the radial and angular axes to determine the position of a point. The following diagram depicts Radar where we have marked different areas, such as the axis, legend, series, and sprite:

A walkthrough of a polar chart – radar

In the preceding diagram, the Radar series is used with two axes:

  • The numeric axis along the radius to show the browser usage data
  • The category axis along the angular direction to show the month

The following diagram shows the different classes involved in the construction and initialization of a chart with the Radar series and the control flow:

A walkthrough of a polar chart – radar

This is similar to the CandleStick series that we saw earlier, except that in place of CartesianChart, PolarChart is used and in place of the CandleStick series (and related sprites), the Radar series' (and related sprites) classes are used.

When it comes to rendering a polar chart, again, the steps are consistent with...

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