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I want to run my main R script multiple times to get an interval (the output of this script is an avgerage (numeric number)). However, within this main R script, I access others sub-R scripts with source() by following this (Run multiple R Scripts in R Studio).

Here's the problem: I use set.seed() in every sub-R scripts to make sure I get the same number across all sub-R scripts. And now I want to run set.seed(1) to set.seed(10). How can I do this?

Desired output (just the idea):

    main R script:
for (i in 1:10){
    source("\...\sub_R_scrip1.R")
    source("\...\sub_R_scrip2.R")
    ...
    source("\...\sub_R_scrip10.R")
}

   sub_R_scripX:
set.seed(1) # when i = 1 in the loop of the main R script
train.row = sample(nrow(df), 100)
train.data = df[train.row,]
test.data = df[-train.row,]
xtrain = train.data[,1:49]
ytrain = train.data[,50]
xtest = test.data[,1:49]
ytest = test.data[,50]

How can i approach this?

Improve this question
3
  • 2
    Is there a reason you're not using functions instead of sourceing your code? It's much easier in the long run. Commented Jul 27, 2020 at 20:49
  • @r2evans there will be a lot of things to return if using function instead of source, there are ~200 lines for each sub R script Commented Jul 27, 2020 at 21:00
  • 2
    "lot of things to return" is all relative, but only you can know what is required from each function. I don't know your scripts, your code, so it's always more complicated than it seems. I don't know enough to be able to help much, sorry. I can say this, though: you can have quasi-arguments for a file by starting it with something like if (!exists("args")) args <- list(...) ; if ("seed" %in% names(args)) set.seed(args$seed), where your main script can set args to be the "arguments" used to initiate each source file. It's a hack. Commented Jul 27, 2020 at 21:41
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