encode_field_values: Set coded values for FeatureLayer or Table data frame

In arcgislayers: An Interface to ArcGIS Data Services

Set coded values for FeatureLayer or Table data frame

Description

encode_field_values() can replace column values based on codedValue type field domains from a corresponding Table or FeatureLayer object created with arc_open().

Usage

encode_field_values(
  .data,
  .layer,
  field = NULL,
  codes = c("replace", "label"),
  call = rlang::caller_env()
)

Arguments

.data	A data frame returned by arc_select() or arc_read().
.layer	A Table or FeatureLayer object. Required.
field	Default NULL. Field or fields to replace. Fields that do not have coded value domains are ignored.
codes	Use of field alias values. Defaults to "replace". There are two options: "replace": coded values replace existing column values. "label": coded values are applied as value labels via a "label" attribute.
call	The execution environment of a currently running function, e.g. caller_env(). The function will be mentioned in error messages as the source of the error. See the call argument of abort() for more information.

Value

A data.frame with fields encoded with their respective domains.

Examples

layer <- arc_open(
  "https://geodata.baltimorecity.gov/egis/rest/services/Housing/dmxOwnership/MapServer/0"
)

res <- arc_select(
  layer,
  n_max = 100,
  where = "RESPAGCY <> '  '",
  fields = "RESPAGCY"
)
encoded <- encode_field_values(res, layer)
table(encoded$RESPAGCY)

arcgislayers documentation built on April 16, 2025, 1:10 a.m.