> Apologies, I cannot see how to make a rero for this issue.
> I have a function that uses levels(r) tor return the RAT of a raster "r"
> when the function is sourced from a script
> it works fine.
> when the function is built into a package and sourced from there
> library(mypackage) using the same script file to make the package
> the same line throws an error, as levels(myraster returns NULL
> If I modify the script to include the raster namespace:
> Then I get the error
> Error: 'levels<-' is not an exported object from 'namespace:raster'
The error suggests that you are trying to assign levels, rather than
> I have also tried just using levels(r) and putting raster as a depends
> rather than an import in the DESCRIPTION file for the package, this does
> not solve the error.
> Any suggestions on how to overcome the problem?
> many thanks
> Nevil Amos
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