Sorry if a question like this has already been answered, but I didn't find any similar ones.
I have a matrix that may look like this:
only much larger... maybe with RowDimension 200000.
Is it possible to use LinearAlgebra:-Map involving some conditioning on different rows.
"Map the first element of each row to zero if the second and third elements are equal".
I can do operation in different columns like:
for example. But I do not know how to compare different columns or involve more than one.
Will a "do" loop have the same efficiency as Map or map?
Thank you all for reading and any comments are welcome,