[R] Limiting the scope of RNGkind/set.seed
epurdom @end|ng |rom @t@t@berke|ey@edu
Tue Apr 16 18:12:49 CEST 2019
I have a package, and inside of it I have a small function that selects a random palette of colors for graphing purposes. It’s a large number of colors, which is why I don’t manually select them, but I did want them to stay constant so I set the seed before doing so. So I had a little function in my package that does this:
Now that the sample function has been changed in R 3.6, I would need to use `sample.kind=“Rounding”` to get the same set of colors as I had previously. However, I don’t want to do that in my package, because that appears to change the global environment sampling:
 "Mersenne-Twister" "Inversion" "Rejection"
> x<-clusterExperiment:::.rcolors() #now I have changed the function so that sample.kind=“Rounding” — I’ve suppressed the warnings
 "Mersenne-Twister" "Inversion" "Rounding”
So I could do something like this:
#set it back to default
But is there a way to change the random sampling in the function environment and not change it in the global environment? (For this function, I can just break down and accept that I will have different colors from this point on, but I’d like to know more generally; especially since it means that my `fixed` colors are not really fixed since they depend on the user’s setting of random sampling techniques, which I hadn’t considered before).
All of the best,
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