I want to extract the minimum value of each element of several matrix that are stored inside a list. I'm using pmin:
do.call(pmin, mylist)
The problem is that some elements of those matrix are NAs, and pmin yields a NA where I want it to yield the minimum value after excluding the NAs. I tried to solve my problem using do.call(pmin(na.rm=T), mylist)
but I get an error. I also tried with this answer: data.table and pmin with na.rm=TRUE argument, but I get the error because .SD is not on the environment. Simple code for a similar problem would be:
mymat1 <- matrix(rnorm(10), ncol=2)
mymat2 <- matrix(rnorm(10), ncol=2)
mymat2[2,2] <- NA
mymat3 <- matrix(rnorm(10), ncol=2)
mylist <- list(mymat1, mymat2, mymat3)
do.call(pmin, mylist)
I get a NA in the position [2,2] of the resulting matrix, and I want to get the minimum values ignoring NAs. Any suggestions? Thank you.
Concatenate the na.rm = TRUE as a named list element and then use pmin with do.call so that the parameter na.rm will be found
do.call(pmin, c(mylist, list(na.rm = TRUE)))
# [,1] [,2]
#[1,] -1.0830716 -0.1237099
#[2,] -0.5949517 -3.7873790
#[3,] -2.1003236 -1.2565663
#[4,] -0.4500171 -1.0588205
#[5,] -1.0937602 -1.0537657