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...tions I wish to extract are 1 and 5 of the first row of each matrix (in my case are 25positions) and with this generate a new matrix with the form d= [,1] [,2] [,3] [1,] 1 15 30 [2,] 5 19 34 The ideais to builda loop toextract thisinformation from hundredsmatrices, butI failed todo so. Any helpwould be greatthank you very muchin advance regards .jpg [[alternative HTML version deleted]]

Hi R user,I am struggling to figure out on how I can calculate the average from the two tables in R. Any one can help me? really your help would be grateful- I am spending so much time to figure it out. It should not be so hard, I think. I have very big data but I have created a hypothetical data for simplification. for example I have : table 1 table 1: species occurance data