topic Re: Invoke node : export image doesn't work in subvi? in LabVIEW

Invoke node : export image doesn't work in subvi?

eximo — Tue, 05 Apr 2011 04:27:20 GMT

Windows 7 64bit

labview 9, 32 bit

bug alert!!

see attached example vi's

The export image invoke node only works while the subvi is open, if called as a subvi and the subvi is closed this function fails to create an image.

Using the build XY graph express, I have created an xy graph. Then created an invoke node to export the image of the xy chart. When i call this vi as a subvi, it works, provided the subvi remains open. If I close the subvi and run the main vi, no image is created.

Any explanations why this would be so? Does labview 10 have the same problem?

Re: Invoke node : export image doesn't work in subvi?

Ashwin_S — Tue, 05 Apr 2011 07:03:59 GMT

That's not a bug, Read This http://forums.ni.com/t5/LabVIEW/Export-simplified-image-failed-in-subvi/m-p/950004

You will get an Explanation and what should be used.

AshwiN,

Re: Invoke node : export image doesn't work in subvi?

eximo — Tue, 05 Apr 2011 22:33:47 GMT

So the simple answer is, whenever an image is desired from a subvi always use : invoke node -> get image, in addition to whatever image gathering code already implemented to force labview to update the image