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raster::levels() not working in packaged function.

2 messages · Nevil Amos, Marcelino de la Cruz Rot

Nevil Amos
# 
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
source(".\R\function.r")
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
levels(r)[[1]]
the same line throws an error, as levels(myraster returns NULL

If I modify the script to include the raster namespace:
raster::levels(r)[[1]]
Then I get the error
 Error: 'levels<-' is not an exported object from 'namespace:raster'


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
Marcelino de la Cruz Rot
# 
Maybe including

import(raster)

or

importFrom("raster", "levels")

in the package NAMESPACE would help.

Cheers,

Marcelino

El 31/10/2020 a las 13:24, nevil amos escribi?: