Dear UseRs,Extremely sorry for a basic question. I have a matrix of 19 rows and 
365 columns. what i want to do is the following...First i want to leave out 
column number 1 and want to calculate the row wise mean of the remaining 
columns, which will obviously give me 365 values in one column, and then 
subtracting these values from the column i left out i.e. col=1 then i want to 
leave out column 2 and calculate the row wise mean of the remaining columns 
which includes column 1 too and then subtracting these values from the column i 
left out i.e. col=2.and then continuing this process the last column. i know a 
kind of "manual way" of doing things but its extremely long and laborious.Is 
there any loop command or shorter way??
thanks in advanceregardseliza                                     
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