Graph Builder issue

Hi Guys,

Hope you are doing well.

I am trying to implement a process I do munally into the graph builder, my goal is to use a biophysical operator “LAI” and integrate it in a formula with other bands for agriculture purposes.
Whan I do it manually, it works perfectly, but when I design the process in the graoh builder, I get the error in the snapshot.

You will find my graph attached also.

Do you have an idea on what is the issue ?

Thank you for your help,
Best Regards,

This issue is discussed here,

Source of the post

There’s no writer after any of the bandmath operators. You should not try to make everything happen in a single graph.

Thanks for the replies guys.

OK so 2 more questions :slight_smile:

  1. I need to put a write after one of the bandmaths for example and then do a band merge with the biophysical operators ? But i thought that nothing should be before “Read” and after “Write” ?

  2. I took of the “subset” for both processes, in order to make sure that dimensions are the same, but still doesn’t work

I don’t think its to complicated meaning I would need to split it into 2 graphs ?