I have a matrix such as
COL1 COL2 COL3 COL4 COL5
SP1 0 1 3 0 0
SP2 1 3 0 0 0
SP3 0 0 0 1 0
SP4 0 1 0 1 0
SP4 3 0 0 4 0
And I would like simply to count for each column, the number of SP with non-ero values ?
I should then get something like :
Nsp
COL1 2
COL2 3
COL3 1
COL4 3
COL5 0
Does someone have an idea please ?
