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GetAxisScalingMode

LabWindows/CVI

GetAxisScalingMode

int GetAxisScalingMode (int panelHandle, int controlID, int axis, int *scalingMode, double *min, double *max);

Purpose

Obtains the scaling mode and the range of a graph axis or the scaling mode and the range of a y-axis of a strip chart.

GetAxisScalingMode is not valid for the x-axis of a strip chart. To obtain the x-offset and x-increment for a strip chart, use GetCtrlAttribute with the ATTR_XAXIS_OFFSET and ATTR_XAXIS_GAIN attributes.

Supported Controls

You can use GetAxisScalingMode with the following controls:

Parameters

Input
Name Type Description
panelHandle int Specifier for a particular panel that is currently in memory. You can obtain this handle from functions such as LoadPanel and NewPanel.
controlID int The defined constant, located in the .uir header file, that you assigned to the control in the User Interface Editor, or the ID returned by functions such as NewCtrl and DuplicateCtrl.
axis int Specifies for which axis to obtain the mode and range. The following lists the valid values:

VAL_BOTTOM_XAXIS (graphs only)
VAL_TOP_XAXIS (graphs only)
VAL_LEFT_YAXIS (graphs and strip charts)
VAL_RIGHT_YAXIS (graphs and strip charts)
Output
Name Type Description
scalingMode int The current scaling mode used for the graph axis or strip chart y-axis.

The following table lists the values of axisScaling.

VAL_MANUAL Axis is manually scaled, and min and max define its range.
VAL_AUTOSCALE Axis is autoscaled. min and max are not used. This value is not valid for the x-axis of strip charts.
If you call SetAxisScalingMode with axisScaling set to VAL_AUTOSCALE, and you then call SetAxisScalingMode with axisScaling set to VAL_LOCK, GetAxisScalingMode returns axisScaling as VAL_MANUAL.

You can pass NULL for this parameter.
min double Current minimum value on the axis.

You can pass NULL for this parameter.
max double Current maximum value on the axis.

You can pass NULL for this parameter.

Return Value

Name Type Description
status int Return value indicating whether the function was successful. A negative number indicates that an error occurred.

Additional Information

Library: User Interface Library

Include file: userint.h

LabWindows/CVI compatibility: LabWindows/CVI 4.0 and later

Examples

Refer to the following examples that use the GetAxisScalingMode function:

  • userint\GraphAnnotations.cws

    Open example
  • userint\GraphZooming.cws

    Open example
  • userint\TimeDateUnits.cws

    Open example