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Use of rm(list=ls()) at Start of Job

Is rm(list=ls()) at the beginning of a R job that's run in batch useful or otherwise a best practice?
Yes, it can be useful to start off your batch script with the command 'rm(list=ls())' just to make sure that you have a clean R environment before submitting the batch job. For example, you may have users that have their own .Rprofile files with a sequence of commands in them that create some R objects on startup of R. In that case it may be useful, to erase any existing R objects before running the R code for the batch job.

For example, here is pseudocode to do this:

x <- ls() 
if (x is not empty) { 

Yes, you can certainly run code like this after startup to remove existing R objects from the user workspace. 
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Id. de artículo: 3103289 - Última revisión: 10/26/2015 08:22:00 - Revisión: 1.0

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