ursa_grid {ursa} | R Documentation |
Raster image (ursaRaster
) contains embedded spatial parameters (ursaGrid
) in item $grid
. These functions manipulate with item $grid
.
ursa_grid(obj) ursa_grid(obj) <- value ursa_ncol(obj) ursa_nrow(obj) ursa_columns(obj) ursa_rows(obj) ursa_samples(obj) ursa_lines(obj) ursa_extent(obj) ursa_bbox(obj)
obj |
|
value |
|
ursa_grid<-
may used to minor corrections of spatial parameters. Howevert, it seems that this function is not claimed in practice.
ursa_ncol
, ursa_columns
, ursa_samples
are synonyms for extracting number of columns/samples.
ursa_nrow
, ursa_rows
, ursa_lines
are synonyms for extracting number of rows/lines.
ursa_extent
, ursa_bbox
, are synonyms for extracting boundary box (spatial extent).
ursa_grid
return value of $grid
item of ursaRaster
object.
ursa_grid<-
return ursaRaster
with modified $grid
item.
ursa_ncol
, ursa_columns
, ursa_samples
return integer of length 1.
ursa_nrow
, ursa_rows
, ursa_lines
return integer of length 1.
ursa_extent
, ursa_bbox
return numeric of length 4 (xmin, ymin, xmax, ymax).
Nikita Platonov platonov@sevin.ru
session_grid(NULL) a <- pixelsize() print(ursa_grid(a)) ursa_grid(a)$proj4 <- gsub("\\.0+","",ursa_grid(a)$proj4) print(ursa_grid(a))