Error loading "units" package

[TFCMendes]

I'm running NetLogo 6.1.1 on Linux. When I try to load the package "units" (or other dependents on it) I get the following error:

library(units)
Error: package or namespace load failed for ‘units’:
.onLoad failed in loadNamespace() for 'units', details:
call: udunits_init(file.path(.get_ud_xml_dir(), "udunits2.xml"))
error: Error in function udunits_init: Error parsing unit specification

The packages runs smoothly on Rstudio. It seems that, when loaded into R-extension, cannot locate the file "udunits2.xml", which is in a shared folder.
I have tried on more than 1 Linux computer, with the same results. In Windows i had no problems.

Thanks in advance!

[ladypolo19]

I have the same problem, did you solve it?

[TFCMendes]

yes, I solved it using an older version of R (3.4.4)

[rbialoz]

I am using R version 4.1.2 now and I get a similar problem:

.onLoad failed in loadNamespace() for 'units', details:
call: ud_init(path)
error: no database found!

This might be related to the file "udunits2.xml" as well. The file is in both packages "units" and "udunits2". Both are readable and have the same size.

[LaCuneta]

@rbialoz If you can switch to NetLogo 6.3 you can try out the Simple R extension, available in the Extensions Manager inside the NetLogo app. I just tried out the units package with it and it loaded up fine using the udunits2.xml database. Information on switching to Simple R from the bundled R extension is here: https://github.com/NetLogo/SimpleR-Extension#transitioning-from-the-old-r-extension

[rbialoz]

@LaCuneta Thank you for this suggestion using the sr extension. This seems even available for NetLogo 6.2. This extension solved my problem with the units package. Most of my commands run now. I got in trouble with a different command (dplyr, purrr and amt for homerange calculations, but that is another topic.