search for: csgillespie

Displaying 4 results from an estimated 4 matches for "csgillespie".

2016 May 13
2
Libro: Efficient R programming
Por si os interesa.... https://csgillespie.github.io/efficientR/ Un saludo, Miguel. ________________________________ Nota: A información contida nesta mensaxe e os seus posibles documentos adxuntos é privada e confidencial e está dirixida únicamente ó seu destinatario/a. Se vostede non é o/a destinatario/a orixinal desta mensaxe, por...
2017 Jul 03
1
The ByteCompile & LazyLoading fields
Hi, In the DESCRIPTION file the ByteCompile and LazyLoading arguments appear to accept any value. >From the manual the field should be a "logical field". However, authors interpret this in a variety of ways: unique(tools::CRAN_package_db()$ByteCompile) # [1] NA "TRUE" "yes" "true" "Yes" "no" #
2019 Jun 07
1
Parallel number stream: clusterSetRNGStream
Dear All, Is the following expected behaviour? set.seed(1) library(parallel) cl = makeCluster(5) clusterSetRNGStream(cl, iseed = NULL) parSapply(cl, 1:5, function(i) sample(1:10, 1)) # 7 4 2 10 10 clusterSetRNGStream(cl, iseed = NULL) # 7 4 2 10 10 parSapply(cl, 1:5, function(i) sample(1:10, 1)) stopCluster(cl) The documentation could be read either way, e.g. * iseed: An integer to be
2017 Oct 27
1
Slow down using the compiler
Dear All, In R 3.4.2 (Linux), the compiler seems to have regressed: $ R --vanilla g = function() { N = 1e7; ans = numeric(N) system.time({for (j in 1:N) ans[j] = 1}) } g() # user system elapsed # 4.272 0.000 4.272 g1 = compiler::cmpfun(g) g1() # user system elapsed # 4.232 0.004 4.235 Running the above code in Windows 3.3.1, g() takes the same time, but g1() takes around 0.5