check the row that has at least one non zero element, except one row

I have a matrix that has 20 rows and I have to calculate some thing only on the rows that have at least one element, except one row that is specified by a variable, I use this:

 for i = setdiff(1:r, row)

for the specific row exception part, but how can i mix this with, for example, any(matrix,2)?

[Bob Thompson]

I'm a little confused what you're asking. Are you looking for how to code the check for non-zero elements in each row?

[negin tebyani]

let me explain it this way. I have to build a matrix called interference that the elements have to be like this:

interference(1,1)=[gain(2,1)/mbw(2)]+[gain(3,1)/mbw(3)]+[gain(4,1)/mbw(4)]

considering the interference is a 4*4 matrix. i have gain and mbw arrays.

Answer 1

[Stephen23]

idx = setdiff(1:r, row)
any(matrix(idx,:),2)

[negin tebyani]

I need to do something like this:

   for i=1:r
         for j=1:c
         Interference(i,j)=  ChannelGainUN(i,j)/MaxBandwidthOfEachRRH(i)  
         end
     end

but for each i, ChannelGainUN(i,j)/MaxBandwidthOfEachRRH(i) should be calculated for all r's excepr r=i, can I do it with this?

[Stephen23]

Interference = zeros(r,c);
for idr = 1:r
    idx = setdiff(1:r, idr);
    for idc = 1:c
        Interference(idr,idc) = ChannelGainUN(idx,idc)/MaxBandwidthOfEachRRH(idx);
    end
end

[negin tebyani]

thank you for this, I have a question about the first answer, I mean:

 idx = setdiff(1:r, row)
 any(matrix(idx,:),2)

how can I use both these in a for? in shape of the second answer

[Stephen23]

for idr = 1:r
    idx = setdiff(1:r, idr);
    any(matrix(idx,:),2)
end