How can I find the smallest value in a matrix that is greater than -Inf with R?

Question

I have a matrix of values some of which are -Inf. How can I find the smallest value that is greater than -Inf?

Answer 1

This way:

foo <- matrix(c(1,2,-Inf,3),nrow=2,ncol=2)
min(foo[foo>-Inf])
[1] 1