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R: removing the last elements of a vector the easy way

Every day I’m getting more fascinated by the weirdness of R. Sometimes it’s a bad surprise, but sometimes it’s a good one. After a crash in some time-consuming procedure, I still wanted to be able to plot my partial results properly. For this I had to remove some space I assigned at the beginning of the procedure (by creating result vectors filled with NAs). It turns out there’s a very quick and easy way to trim a vector to keep only the N first values:

If you want to quickly try on a test vector:

Posted in R (R-project).

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