Data Scale Types

• Nov 14, 2018

This document briefly describes the specifics of data scale types in DevExpress Win10 App Chart Controls.

Each series should have an appropriate scale type defined for its data points’ arguments and values. The scale type determines how a chart interprets the series’ underlying data (as qualitative, numeric or date-time), which directly affects the chart’s overall output.

You can define the scale type for a series in two ways:

• If you provide data for a series using the DataPointCollection object, set its DataPointCollection.ArgumentScaleType and DataPointCollection.ValueScaleType properties.
• If you provide data for a series using the DataSourceAdapter object, set the DataMember.ScaleType property values of its DataSourceAdapter.DataMembers.

Note that by default all scale type properties are set to ScaleType.Auto. This means that a chart tries to automatically determine the type of data by analyzing values provided for a chart. Thus, in general you do not need to specify the data scale type manually. However, if for some reason you want to use another scale type that differs from those that are automatically determined by a chart control, you can set custom values to the corresponding scale type properties.