Re: [Rd] 'droplevels' inappropriate change

> Martin Maechler > on Sat, 27 Aug 2016 18:55:37 +0200 writes: > Suharto Anggono Suharto Anggono via R-devel > on Sat, 27 Aug 2016 03:17:32 + writes: >> In R devel r71157, 'droplevels' documentation, in

Re: [Rd] 'droplevels' inappropriate change

> Suharto Anggono Suharto Anggono via R-devel > on Sat, 27 Aug 2016 03:17:32 + writes: > In R devel r71157, 'droplevels' documentation, in "Arguments" section, says this about argument 'exclude'. > passed to factor(); factor levels which should be

Re: [Rd] 'droplevels' inappropriate change

In R devel r71157, 'droplevels' documentation, in "Arguments" section, says this about argument 'exclude'. passed to factor(); factor levels which should be excluded from the result even if present. Note that this was implicitly NA in R <= 3.3.1 which did drop NA levels even when present in x,

Re: [Rd] 'droplevels' inappropriate change

> Suharto Anggono Suharto Anggono via R-devel > on Sun, 21 Aug 2016 10:44:18 + writes: > In R devel r71124, if 'x' is a factor, droplevels(x) gives > factor(x, exclude = NULL) . In R 3.3.1, it gives > factor(x) . > If a factor 'x' has NA

[Rd] 'droplevels' inappropriate change

In R devel r71124, if 'x' is a factor, droplevels(x) gives factor(x, exclude = NULL) . In R 3.3.1, it gives factor(x) . If a factor 'x' has NA and levels of 'x' doesn't contain NA, factor(x) gives the expected result for droplevels(x) , but factor(x, exclude = NULL) doesn't. As I said in