Hi,
Brandon Invergo wrote:
You can use the length() and which() functions for that:
> length(which(m == 2))
Or even shorter since TRUE Values have a value of 1
mymatrix <- matrix(sample(x=1:10, size=1000, replace=TRUE), ncol=5)
sum(mymatrix==2)
length(which(mymatrix==2)) #should give the same result
Best,
Roland
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