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 [[alternative HTML version deleted]]
Marcelino de la Cruz Rot
2020-Oct-31 13:18 UTC
[R] [R-sig-Geo] raster::levels() not working in packaged function.
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 > > [[alternative HTML version deleted]] > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo at r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > .-- 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
nevil amos
2020-Oct-31 23:01 UTC
[R] [R-sig-Geo] 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 > > > > [[alternative HTML version deleted]] > > > > _______________________________________________ > > R-sig-Geo mailing list > > R-sig-Geo at r-project.org > > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > > . > > > -- > 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 > >[[alternative HTML version deleted]]