raster::levels() not working in packaged function.
Many thanks, That worked, since the NAMESPACE file incudes a warning about editing it directly I ysed the reoygen tag in the fucntion script #' @import raster. On Sun, 1 Nov 2020 at 00:18, Marcelino de la Cruz Rot <
marcelino.delacruz at urjc.es> wrote:
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?:
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
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-- Marcelino de la Cruz Rot Depto. de Biolog?a y Geolog?a F?sica y Qu?mica Inorg?nica Universidad Rey Juan Carlos M?stoles Espa?a