[R-sig-Geo] Issue with rgrass7 and readRAST

[Thomas Adams]

Hi,

I'm using R in combination with GRASS GIS 7.8.3, attempting to read a GRASS
raster file into R with the rgrass7 interface. I have done this kind of
thing countless times previously without problems. It's quite possible I am
running into memory issues, but my Ubuntu 18.04 Linux computer has 32 GB of
RAM.

My GRASS raster file:

Type of Map:  raster               Number of Categories: 0
Data Type:    CELL
Rows:         22663
Columns:      28794
Total Cells:  652558422
~90m resolution

Using...

srtm <- readRAST("mozambique_srtm_patch",cat=FALSE)

After quite some time, I get...

Error in execGRASS("r.out.bin", flags = rOutBinFlags, input = vname[i],  :
  The command:
r.out.bin -b -i input=mozambique_srtm_patch
output=/media/teaiii/development/grass/greensboro_mercator/teaiii/.tmp/teaiii-Leopard-WS/mozambique_srtm_patch
bytes=4 null=-81
produced an error (1) during execution:
Creating BIL support files...
Exporting raster as integer values (bytes=4)
ERROR: Error writing data
In addition: Warning messages:
1: In showSRID(uprojargs, format = "PROJ", multiline = "NO") :
  Discarded ellps unknown in CRS definition: +proj=merc +lat_ts=0 +lon_0=0
+x_0=0 +y_0=0 +R=6378137 +units=m +no_defs
2: In showSRID(uprojargs, format = "PROJ", multiline = "NO") :
  Discarded datum unknown in CRS definition

Libraries loaded include: sp, rgrass7, rgdal, raster...

Any thoughts?

Best,
Tom

-- 
Thomas E Adams, III
1724 Sage Lane
Blacksburg, VA 24060
tea3rd using gmail.com (personal)
tea using terrapredictions.org (work)

1 (513) 739-9512 (cell)

	[[alternative HTML version deleted]]