the rows are not saving

for i=1:size(strain,1)
    if i ~=1 && i~=size(strain,1)
        rss=strain(i,:)
        ff=repelem(rss,[2],[1])
        
    end
end
s=[firstrow; ff ;lastrow]

i rss to save each time the row that im extracting, however it is not saving, i tried to use rss(i) and it is saying that (Unable to perform assignment because the indices on the left side are not compatible with the size of the right side). i tried to use {I} instead and the first row is coming out to be empty.

what is the solution?

i want rss to save everytime is is extracting the specified row

[Sailesh Kalyanapu]

Hey! Could you elaborate on your query through an example?

[KSSV]

The codes looks illogic. You need not to use a loop to repeat the elements. What exactly you are trying to do?

[Jan]

@Mahmoud Chawki: The purpose of the code is not clear. Then it is not possible to fix it.

Replace

for i=1:size(strain,1)
    if i ~=1 && i~=size(strain,1)        

by

for i = 2:size(strain,1) - 1    

But what should be the contents of ff?