Describe the bug
FeatureLayers will return additional fields when none are specified. This is not a bug necessarily, as this is how feature services work.
For example this query returns the NAME field even though no fields were specified https://services.arcgis.com/P3ePLMYs2RVChkJx/ArcGIS/rest/services/USA_Major_Cities_/FeatureServer/0/query?where=1%3D1&objectIds=&time=&geometry=&geometryType=esriGeometryEnvelope&inSR=&spatialRel=esriSpatialRelIntersects&resultType=none&distance=0.0&units=esriSRUnit_Meter&relationParam=&returnGeodetic=false&outFields=&returnGeometry=true&featureEncoding=esriDefault&multipatchOption=xyFootprint&maxAllowableOffset=&geometryPrecision=&outSR=&defaultSR=&datumTransformation=&applyVCSProjection=false&returnIdsOnly=false&returnUniqueIdsOnly=false&returnCountOnly=false&returnExtentOnly=false&returnQueryGeometry=false&returnDistinctValues=false&cacheHint=false&orderByFields=&groupByFieldsForStatistics=&outStatistics=&having=&resultOffset=&resultRecordCount=&returnZ=false&returnM=false&returnExceededLimitFeatures=true&quantizationParameters=&sqlFormat=none&f=pjson&token=
To Reproduce
library(arcgis)
#> Attaching core arcgis packages:
#> → arcgisutils v0.2.0.9000
#> → arcgislayers v0.2.0
flayer <- arc_open("https://services.arcgis.com/P3ePLMYs2RVChkJx/ArcGIS/rest/services/USA_Counties_Generalized_Boundaries/FeatureServer/0")
arc_select(flayer, fields = "")
#> Simple feature collection with 3143 features and 2 fields
#> Geometry type: MULTIPOLYGON
#> Dimension: XY
#> Bounding box: xmin: -178.2176 ymin: 18.92179 xmax: -66.96927 ymax: 71.40624
#> Geodetic CRS: WGS 84
#> First 10 features:
#> NAME OBJECTID geometry
#> 1 Autauga County 1 MULTIPOLYGON (((-86.82067 3...
#> 2 Baldwin County 2 MULTIPOLYGON (((-87.97309 3...
#> 3 Barbour County 3 MULTIPOLYGON (((-85.74337 3...
#> 4 Bibb County 4 MULTIPOLYGON (((-87.41986 3...
#> 5 Blount County 5 MULTIPOLYGON (((-86.96799 3...
#> 6 Bullock County 6 MULTIPOLYGON (((-85.4114 32...
#> 7 Butler County 7 MULTIPOLYGON (((-86.44912 3...
#> 8 Calhoun County 8 MULTIPOLYGON (((-85.79353 3...
#> 9 Chambers County 9 MULTIPOLYGON (((-85.58963 3...
#> 10 Cherokee County 10 MULTIPOLYGON (((-85.41657 3...
Describe the bug FeatureLayers will return additional fields when none are specified. This is not a bug necessarily, as this is how feature services work.
For example this query returns the
NAMEfield even though no fields were specifiedhttps://services.arcgis.com/P3ePLMYs2RVChkJx/ArcGIS/rest/services/USA_Major_Cities_/FeatureServer/0/query?where=1%3D1&objectIds=&time=&geometry=&geometryType=esriGeometryEnvelope&inSR=&spatialRel=esriSpatialRelIntersects&resultType=none&distance=0.0&units=esriSRUnit_Meter&relationParam=&returnGeodetic=false&outFields=&returnGeometry=true&featureEncoding=esriDefault&multipatchOption=xyFootprint&maxAllowableOffset=&geometryPrecision=&outSR=&defaultSR=&datumTransformation=&applyVCSProjection=false&returnIdsOnly=false&returnUniqueIdsOnly=false&returnCountOnly=false&returnExtentOnly=false&returnQueryGeometry=false&returnDistinctValues=false&cacheHint=false&orderByFields=&groupByFieldsForStatistics=&outStatistics=&having=&resultOffset=&resultRecordCount=&returnZ=false&returnM=false&returnExceededLimitFeatures=true&quantizationParameters=&sqlFormat=none&f=pjson&token=To Reproduce
Created on 2024-03-21 with reprex v2.0.2
Expected behavior
When no fields are specified, only geometry should be returned.
Additional context
Addressed in https://github.com/R-ArcGIS/arcgislayers/pull/167