Get the table of group attributes
getGroups(x) # S4 method for ANY getGroups(x) # S4 method for geom getGroups(x) # S4 method for Raster getGroups(x) # S4 method for SpatRaster getGroups(x)
| x | the object from which to derive the attribute table. |
|---|
A tibble (or a list of tibbles per layer) of the group attributes of
x.
This table contains at least the column 'gid'.
When this function is called on "ANY" object, it is first tested whether
that object has features (getFeatures), from which the groups
can be reconstructed. If this is not the case, NULL is returned.
Other getters:
getCRS(),
getCols(),
getExtent(),
getFeatures(),
getHistory(),
getLayers(),
getNames(),
getPoints(),
getRes(),
getRows(),
getType(),
getWindow()
getGroups(gtGeoms$polygon) #> # A tibble: 2 × 1 #> gid #> <int> #> 1 1 #> 2 2 gc_sp(gtGeoms$line) %>% getGroups() #> # A tibble: 2 × 1 #> gid #> <dbl> #> 1 1 #> 2 2 gc_sf(gtGeoms$line) %>% getGroups() #> # A tibble: 2 × 1 #> gid #> <dbl> #> 1 1 #> 2 2 # for gridded objects, groups are unique pixel values, and their # attributes are in the raster attribute table (RAT) gc_raster(gtGeoms$grid$categorical) %>% getGroups() #> # A tibble: 9 × 2 #> gid cover #> <int> <fct> #> 1 1 lake #> 2 11 sealed #> 3 21 wetland #> 4 24 arable #> 5 27 pasture #> 6 31 clearcut #> 7 41 deciduous forest #> 8 44 coniferous forest #> 9 47 mixed forest gc_terra(gtGeoms$grid$categorical) %>% getGroups() #> # A tibble: 9 × 2 #> gid cover #> <dbl> <chr> #> 1 1 lake #> 2 11 sealed #> 3 21 wetland #> 4 24 arable #> 5 27 pasture #> 6 31 clearcut #> 7 41 deciduous forest #> 8 44 coniferous forest #> 9 47 mixed forest