Extract a single column from a geometric object
This function allows to extract a specific column from any geometric object
for which all required getters are available and thus reflects the base
function $.
gt_pull(obj, var, ungroup = FALSE)
obj |
[ |
var |
[ |
ungroup |
[ |
This function searches for var by first looking in the
groups, then the features and finally the points of obj. This
results always in an output that is limited to the unique cases of
var. In case you want the explicit values of, for instance,
fid in obj@points, you have to extract points and then use
pull on the result.
vector of the column specified in var.
Other geometry tools:
gt_filter(),
gt_locate(),
gt_reflect(),
gt_rotate(),
gt_scale(),
gt_skew(),
gt_stretch(),
gt_translate()
# pull values from a geom (there are two features, thus two values) ... gt_pull(gtGeoms$point, "fid") # pull from a Raster* with RAT gt_pull(gtGeoms$grid$categorical, "cover") # pull from an sf-object gt_pull(gtSF$point, "a")
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.