[R] x-y plot as an histogram

Federico Abascal fedeabascal at yahoo.es
Thu Oct 29 20:12:09 CET 2009


I am investigating a problem for which I found no solution.
I have a matrix with two columns. I have plotted it as an x-y plot  
But this is not apropriate for my purposes. I need to group the data  
in matrix[,1] into groups (as an histogram would do). Then I have to  
calculate the average of matrix[,2] for each group.

Before starting with loops and loops I would like to know if is there  
some way to do this easily with R.

Thanks in advance!

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