Programatically change zoom on a graph?

[PaulGanssle]

I'm looking to add a few buttons and/or hotkeys to a graph control that would allow you to zoom in or out a specific amount, or would zoom to fit horizontally or vertically, but I can't find any way to change the zoom on a graph programatically (in LabWindows/CVI 9.0) - the only zooming functions/attributes I find are about auto-scaling and such. Does anyone know what kind of functions I would use if I wanted to programatically change the current display on a graph control?

[Wolfgang · Accepted solution]

Hi,

you can achieve zooming by setting the scaling mode to manual. For example,

SetAxisScalingMode ( panel, PANEL_GRAPH, VAL_BOTTOM_XAXIS, VAL_MANUAL, zoom_x_min, zoom_x_max );

will adjust the x-axis to the range given by zoom_x_min and zoom_x_max. The same is true for the vertical axis.

[PaulGanssle]

That worked perfectly. Thanks!

[Wolfgang]

You're welcome!