Loading terra resets terraOptions()

[gpatoine]

I noticed an unexpected behavior, where loading terra resets terraOptions that had been set before. I do not know if this is on purpose, but it worked differently with raster. My use case was to set the options in the .Rprofile (based on the computer being used), which was quite convenient. I am not sure if this is a recent change.

> terra::terraOptions(tempdir = "H:/temp", memfrac = 0.4, memmax = 30)
> terra::terraOptions()
memfrac   : 0.4
tempdir   : H:/temp
datatype  : FLT4S
progress  : 3
todisk    : FALSE
verbose   : FALSE
tolerance : 0.1
memmin    : 1
memmax    : 30
> library(terra)
> terraOptions()
memfrac   : 0.6
tempdir   : C:/Users/username/AppData/Local/Temp/6/RtmpimL6I6
datatype  : FLT4S
progress  : 3
todisk    : FALSE
verbose   : FALSE
tolerance : 0.1
memmin    : 1 

[rhijmans]

When loading the package the options are not carried over from a previous session, and that would not be desirable.
But you are right that you could set your own defaults for "raster" by adding them to .Rprofile. I am not a big fan of that because it is just clearer to set things in a script, but I can understand that it can be convenient. The way that the options are handled by "terra" is a bit different, and I will add some code to support loading them from .Rprofile.

[rhijmans]

With commit 76bdb62 you can now set options in ".Rprofile.site" like this

options(terra_default=list(tempdir="d:/temp", memfrac=.4))

With these default options set, I get

library(terra)
#terra 1.7.6
terraOptions()
#datatype  : FLT4S
#memfrac   : 0.4
#tolerance : 0.1
#verbose   : FALSE
#verbose   : FALSE
#todisk    : FALSE
#tempdir   : d:/temp
#datatype  : FLT4S
#memmin    : 1
#progress  : 3

[gpatoine]

Great, thank you for the quick response!
I ❤️ terra.