I have an array with 44800 columns and 24 rows I would like to compute the
row average for the array 100 columns at a time, so I would like to end up
with an array of 24 rows x 448 columns. I have tried using apply(dataset, 1,
function(x) mean(x[])), but I am not sure how to get it to take the average
100 columns at a time. Any ideas would be  welcomed.

thanks,

Spencer

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