Y-Axis

• Dec 22, 2020
• 3 minutes to read

The Y-axis is the numerical axis of values.

To access Y-axis settings, use the Y-Axis Settings button in the Diagram section of the Design Ribbon tab of the Chart Tools contextual tab set.

This will invoke the Y-Axis Settings dialog.

Use the combo box at the top to select the pane for the Y-axis settings you need to edit.

Common Settings

The Common tab contains the following settings.

Always show zero level	Specifies whether the axis’ zero level is visible. If this option is unchecked, the visible axis range is defined based on the values plotted in the chart.
Reverse	Allows you to reverse the Y-axis. If the Y-axis is reversed, its values are ordered from top to down.
Show grid lines	Allows you to hide and show grid lines for the Y-axis.
Show Y-axis	Allows you to hide and show the Y-axis.
Show title	Allows you to hide and show the Y-axis title. You can choose whether to use the default text or specify a custom string.
Logarithmic scale	Specifies whether the axis should display its numerical values using a logarithmic scale. The combo box next to this option allows you to select the logarithmic base from one of the predefined values.

To access Y-axis settings in code, use the ChartPane.PrimaryAxisY property. The returned ChartAxisY object exposes the following properties.

ChartAxisY.AlwaysShowZeroLevel	Gets or sets whether the zero level of the Y-axis should always be visible.
ChartAxisY.Logarithmic	Gets or sets whether the axis should display its numerical values using a logarithmic scale.
ChartAxisY.LogarithmicBase	Gets or sets a value specifying a logarithmic base when the ChartAxisY.Logarithmic property is enabled.
ChartAxis.Reverse	Gets or sets whether the axis is reversed.
ChartAxisY.ShowGridLines	Gets or sets whether to show grid lines for a Y-axis.
ChartAxis.Visible	Gets or sets whether the chart’s axis is visible.
ChartAxis.TitleVisible	Gets or sets whether the title of the chart’s axis is visible.
ChartAxis.Title	Gets or sets the title of the chart’s axis.

The Numeric Format tab allows you to specify the numeric display formats for Y-Axis data, as described in the Formatting Data document. In code, you can use the ChartAxisY.NumericFormat property.

The tab contains the following settings.

Format type	Specifies format types for numeric values. Available types are listed in the DataItemNumericFormatType enumeration.
Unit	Specifies the unit to convert the numeric values. Available types are listed in the DataItemNumericUnit enumeration.
Precision	Specifies the number of fractional digits to display.
Currency	Specifies the currency symbol and format provided by the RegionInfo class.
Culture	Specifies the name of a culture that defines the currency symbol and format.
Include group separator	Specifies whether separators should be inserted between digit groups.

Secondary Y-Axis

The secondary Y-axis is useful when it is necessary to visually combine several charts into one. Secondary axes provide the ability to plot series with different ranges on the same chart.

To plot the required series using the secondary axis, enable the Plot on secondary axis option in the Series Options dialog.

In code, use the ChartSeries.PlotOnSecondaryAxis property.

Note

Note that the Y-Axis Settings dialog allows you to specify settings for primary and secondary axes separately.