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
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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