potential bug in Igor 8 "DrawAction extractOutline"

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Hi all

I believe there is a bug in

DrawAction extractOutline

Using this line to find a rectangle on the User Front layer in igor8 (mac), v_npts was set to ZERO even though there is a rectangle in that layer and 

W_polyX, W_polyY are created containing the coordinates of the rectangle. Bug was reproduced on two different machines.

Same code works as needed in Igor9 on Mac.

I found a workaround, using the existence and dimension of W_polyX and W_polyY  to infer the presence of the object on the layer.

You can wait for an official statement of course. But I believe that Igor 8 is not supported anymore and will not receive any fixes, especially since the staff is busy working on Igor 10. If it works on Igor 9, then the bug has been found and fixed apparently. I guess the answer would just be "use Igor 9 then". Did you try the latest nightly build of Igor 8? There might be a chance that you are lucky and the fix is already applied. Proceed with caution and make a backup for the worst case, though.

July 1, 2025 at 06:48 pm - Permalink