Introduction
While there are many options for scales, .netCHARTING can automatically determine the appropriate scales based on your data. This tutorial will demonstrate how element data influences axis scales.
The Y Axis ( value axis )
We will call this the y axis but by 'value axis' we don't literally mean (Y) axis. With ChartType.ComboHorizontal for instance we would be referring to the x axis. For all others however it is the y axis. The element values that influence this axis are
- YValue
- YValueStart
- YDateTime
- YDateTimeStart
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[New in v5.0] The elements of a series can be excluded from the axis scale range using Series.ExcludeFromAxisRange = true |
The automatically chosen axis scales here are either Normal or Time. It is determined by whether the YValue (numeric) or YDateTime (time) values are specified for each element.
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The following table shows value settings of these element properties that the chart engine will consider not set.
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The X Axis (Category / Value Axis)
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Y Axis using ChartType.ComboHorizontal |
The x axis is very powerful, it can operate just like the y axis value axis as well as a category axis. If the elements have names (Element.Name) specified, the axis scale will be a category scale. However, if the elements have either XValue or XDateTime properties set, the appropriate value axis scale will be chosen.
The element properties that influence the x axis type are:
- Name
- XValue
- XValueStart
- XDateTime
- XDateTimeStart
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Even if all numeric or time values are provided, setting any of the element's Name properties will yield a category axis scale and values will become names for elements without specified names. |
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Setting the scale through DefaultAxis.Scale will not produce the same result. |
[C#]
Chart.XAxis.Scale = Scale.Time;
[Visual Basic]
Chart.XAxis.Scale = Scale.Time