plot

[esaki]

how to get a particular value(plot range i.e x,y axis ) from the plot after plotting the value and what command is used in cvi to get the particular value. 

[RobertoBozzolo]

Are you trying to get the X and Y arrays out of a plot? If so, you can call GetPlotAttribute with ATTR_PLOT_XDATA and ATTR_PLOT_YDATA attributes. Max and min values can be derived from the arrays.

[esaki]

I need examples for   attr_plot_ydata  and plotxy  in cvi 

[RobertoBozzolo]

CVI offers a valuable function for searching among the examples installed in the system: the Example Finder can be launched with Help >> Find Examples... menu function. Searching for "plot" will return a series of examples that you can look at to understand how to perform several functions in CVI.

Specifically, GraphZooming.cws example shows how to use ATTR_PLOT_ZDATA_SIZE and ATTR_PLOT_ZDATA to retrieve values from a graph: this can be easily modified to work on X and Y axes.