warnings appear in non-interactive mode about raster

[rhijmans]

This change in "raster" fixes that. I still need to see if that breaks some other package. You can also work around it by assuring that the raster data have a crs. And since the next version of landscapemetrics won't use raster anymore, the problem should also disappear for that reason alone.

[rhijmans]

I cannot reproduce this. Can you make sure you are using the current version of R and the "landscapemetrics" and "terra" packages? Both print messages when you load them, but you do not show them (you should include them when showing your code), like this:

library(landscapemetrics)
#Starting from v2.0.0, landscapemetrics does not support the 'raster' or 'sp' packages.
#    They are replaced by 'terra' and 'sf', respectively. More information
#    about the 'terra' package can be found here: https://rspatial.org/index.html.
library(terra)
#terra 1.7.32

Also, what is your operating system? What is your version of GDAL?

gdal()
#[1] "3.6.2"

[jszhao]

I am running R on Windows 11.

> library(landscapemetrics)
Starting from v2.0.0, landscapemetrics does not support the 'raster' or 'sp' packages.
    They are replaced by 'terra' and 'sf', respectively. More information
    about the 'terra' package can be found here: https://rspatial.org/index.html.
> library(terra)
terra 1.7.29
> gdal()
[1] "3.6.2"

I have located the problem. The following code could reproduce the problem in R console:

library(landscapemetrics)
library(terra)

# The following line cause the problem. Maybe I should report it to landscapemetrics package.
options_landscapemetrics(to_disk = TRUE)

r <- rast(landscape)
z <- spatialize_lsm(r, what = c("lsm_p_area", "lsm_p_circle"))
zz <- rast(lapply(z$layer_1, rast))
plot(zz)
writeRaster(zz, filename = "lsm.tif", overwrite = TRUE)

[jszhao]

The problem is that when set options_landscapemetrics(to_disk = TRUE), landscapemetrics write the layer z$layer_1$lsm_p_area to a temp file with extension .grd/.gri, and rast does not recognize it. That seems a format recognized by raster package.

[jszhao]

Thanks a lot. I have installed the latest version of raster from github. It fixes the problem.