
Dear useRs,
 
1.    how to calculate single median value for two columns of a matrix?
2.    i have a matrix of 16 columns and 365 rows, how to calculate median between columns 1 and 16, 2 and 16, 3 and 16, 4 and 16, 5 and 16 till 15th column. is there a loop command to do the said operation?
 
regards
eliza  		 	   		  
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