Custom R package runs in RStudio but fails when installed in OpenCPU

14 views

Skip to first unread message

David Hine

unread,

Feb 16, 2022, 1:58:37 AM2/16/22

to opencpu

Dear List

We built a package which runs an Rmarkdown file to produce a pdf report. The pdf report is currently directed to /tmp/

The package was developed following H Wickham's R Packages online. Errors are mine, of course. We implemented renv. Thank you to the many who make R so useful!

In RStudio we can call the functions and they run to completion, putting the report in the specified folder.

That is not the case when it is called from Opencpu server. Both the test server site, and a curl call fail with the same message:

cannot open the connection

In call:
file(con, "w")

My interpretation is that the function cannot write to the specified folder, ie /tmp/. There is a folder there with the right timestamp on it, but it does not contain the file. The folder commences Rtmp....

Could you kindly advise me of how to understand that message and some direction towards a solution.