Export R output to a file
This article is originally published at https://www.brodrigues.co/
Sometimes it is useful to export the output of a long-running R command. For example, you might want to run a time consuming regression just before leaving work on Friday night, but would like to get the output saved inside your Dropbox folder to take a look at the results before going back to work on Monday.
This can be achieved very easily using capture.output()
and cat()
like so:
out <- capture.output(summary(my_very_time_consuming_regression))
cat("My title", out, file="summary_of_my_very_time_consuming_regression.txt", sep="\n", append=TRUE)
my_very_time_consuming_regression
is an object of class lm
for example. I save the output of summary(my_very_time_consuming_regression)
as text using capture.output
and save it in a variable called out
. Finally, I save out
to a file called summary_of_my_very_time_consuming_regression.txt
with the first sentence being My title
(you can put anything there). The file summary_of_my_very_time_consuming_regression.txt
doesn’t have to already exist in your working directory. The option sep="\n"
is important or else the whole output will be written in a single line. Finally, append=TRUE
makes sure your file won’t be overwritten; additional output will be appended to the file, which can be nice if you want to compare different versions of your model.
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This article is originally published at https://www.brodrigues.co/
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