Map coords to XY

[JoeCAE]

Hi everyone,

In LabView 8, even 7, the Invoke Node of a graph contains the method "Map Coordinates to XY". That is, it converts a pixelwise coordinates (ex. mouse click on graph area) to a graphwise coordinates. Unfortunately, in LabView 6.1, there is no such useful method. Does someone know an alternative solution? How can I convert pixelwise coordinates to graphwise coordinates.

Thanks for your help,
Joe

Click for cursor.vi

[Jarrod_S.]

I wrote this response a long time ago before I realized there were invoke nodes that would do the mapping for you. I haven't looked at this in a long time, so you should definitely doublecheck my methods and/or pixel math, but the basic idea seemed to work fine. This was designed for linear axes. You'll have to do a little work to make it work for logarithmic scales. Hope this helps!

[tst]

Here's another method, similar to Jarrod's method.

Note that you have to provide the origin of the plot area.

[JoeCAE]

Thank you all. I finally succeed with your help! Thanks again!