gmeta6 {spgrass6} | R Documentation |
GRASS LOCATION metadata are read into a list in R; helper function getLocationProj returns an spproj-compliant PROJ.4 string of projection information. The helper function gmeta2grd
creates a GridTopology object from the current GRASS mapset region definitions.
gmeta6(ignore.stderr = FALSE) getLocationProj(ignore.stderr = FALSE) gmeta2grd(ignore.stderr = FALSE) ## S3 method for class 'gmeta6': print(x, ...)
ignore.stderr |
default FALSE, can be set to TRUE to silence system() output to standard error; does not apply on Windows platforms |
x |
S3 object returned by gmeta6 |
... |
arguments passed through print method |
Returns list of g.gisenv, g.region -g3, and g.proj values
Roger S. Bivand, e-mail: Roger.Bivand@nhh.no.
if (nchar(Sys.getenv("GISRC")) > 0) { G <- gmeta6() print(G) CRS(getLocationProj()) grd <- gmeta2grd() print(grd) ncells <- prod(slot(grd, "cells.dim")) df <- data.frame(k=rep(1, ncells)) mask_SG <- SpatialGridDataFrame(grd, data=df) summary(mask_SG) }