write_gdal | R Documentation |
write_gdal
writes in-memory object of class ursaRaster
to disk using GDAL from rgdal package.
write_gdal(obj, ...) ursa_write(obj, fname)
obj |
Object of class |
... |
Arguments, which are passed to |
fname |
Character. File name with extension. |
ursa_write
is simplified call of write_gdal
.
write_gdal
implements writing the whole ursaRaster
object to disk. For multiple access to disk (by chunks), use followed Replace construction:
a <- create_gdal(fname) a[condition_1] <- value1 a[condition_2] <- value2 ... close(a)
Integer code of ENVI data type. See values of the “data type” field in description of the ENVI Header Format.
Nikita Platonov platonov@sevin.ru
create_gdal
, Replace method [<-
for ursaRaster
object, close
method for ursaRaster
object.
write_envi
session_grid(NULL) ftemp <- tempfile(pattern="",fileext="") fpath <- dirname(ftemp) fname <- basename(ftemp) a <- round(ursa_dummy(1,min=0,max=255,nodata=NA)) write_envi(a,file.path(fpath,paste0(fname,"_1",".envi"))) write_gdal(a,file.path(fpath,paste0(fname,"_2"))) write_gdal(a,file.path(fpath,paste0(fname,"_3",".tif"))) write_gdal(a,file.path(fpath,paste0(fname,"_4")),driver="EHdr") flist <- dir(path=fpath,pattern=fname,full.names=TRUE) file.remove(flist) blist <- basename(flist) res <- NULL for (i in seq(4)) res <- c(res,paste(grep(paste0("_",i),blist,value=TRUE),collapse=" ")) print(res)
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