[SOLVED] Python multiple row addition

Beginners
1

Hi touchdesigner community,

I am currently trying to evaluate an image with the number of white pixels in a 1280 by 720 image. I what to sum every pixels of a column wich means 720 pixels. I want to do that 1280 times seperatly. I know it is possible to do it in the CHOPs with an evaluate but I don’t what to have 1280 evalute CHOP in my patch. I just found on an other topic here a solution to sum the row of DAT table and want to adapt the code do it 1280 times the number of rows that I have with my image.I would love to combine all the data in an other table DAT with only one row that I would use for instancing in ty. I don’t know if anyone can help me I am quit new in the python world.

rowAddition.tox (1.4 KB)
whitePixels.tox (526 Bytes)

Many thanks in advance,
Jean-Sébastien Schnubb

2

This is not my area of expertise, but I got interested in your problem and came up with the method in here using OPs. I put some comments in but feel free to ask questions if what’s going on is unclear.
whiteSum.toe (8.3 KB)

3

Hi Ivan,

Wow nice you figured it out thanks alot. Never thought of using the anaylze TOP. It is way easier with the OPs than python.

J-S