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hturner
/ integer_typing.R
Created
January 22, 2020 16:19
Some examples of where explicitly using an integer scalar/vector is more efficient in R. Often the difference in a single operation is quite small, but if repeatedly using integer values in a script using explicit typing can be an easy way to gain speed.
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| library(microbenchmark) | |
| # Examples where explictly typing with "L" is more efficient | |
| ## create a reasonably large matrix | |
| r <- 5000 | |
| c <- 100 | |
| ints <- sample(0:10, r*c, replace = TRUE) | |
| M <- matrix(ints, nr = r, nc = c) |
