PostGIS GeoJson Query Not Validating
I am using the following query to create a GeoJson response:
SELECT json_build_object(
'type', 'FeatureCollection',
'features', jsonb_agg(feature)
)
FROM (
SELECT json_build_object(
'type', 'Feature',
'id', id,
'geometry', ST_AsGeoJSON(ST_ForcePolygonCW(wkb_geometry))::json,
'properties', to_jsonb(row) - 'id' - 'wkb_geometry'
) AS feature
FROM (SELECT * FROM gis_states LIMIT 1) AS row
) AS features
The resulting data-set (https://pastebin.com/hvFQXUTr) does not validate at http://geojsonlint.com, even though I am using ST_ForcePolygonCW:
Line 1: Polygons and MultiPolygons should follow the right-hand rule
Any suggestions on how to fix this?
postgis geojson
edited Dec 19 '18 at 22:56
PolyGeo♦
53.2k1779238
asked Dec 19 '18 at 15:00
mike.bronner
1739
add a comment |
I am using the following query to create a GeoJson response:
SELECT json_build_object(
'type', 'FeatureCollection',
'features', jsonb_agg(feature)
)
FROM (
SELECT json_build_object(
'type', 'Feature',
'id', id,
'geometry', ST_AsGeoJSON(ST_ForcePolygonCW(wkb_geometry))::json,
'properties', to_jsonb(row) - 'id' - 'wkb_geometry'
) AS feature
FROM (SELECT * FROM gis_states LIMIT 1) AS row
) AS features
The resulting data-set (https://pastebin.com/hvFQXUTr) does not validate at http://geojsonlint.com, even though I am using ST_ForcePolygonCW:
Line 1: Polygons and MultiPolygons should follow the right-hand rule
Any suggestions on how to fix this?
postgis geojson
edited Dec 19 '18 at 22:56
PolyGeo♦
53.2k1779238
asked Dec 19 '18 at 15:00
mike.bronner
1739
Related: gis.stackexchange.com/questions/259944/…
– RoVo
Dec 19 '18 at 15:07
add a comment |
I am using the following query to create a GeoJson response:
SELECT json_build_object(
'type', 'FeatureCollection',
'features', jsonb_agg(feature)
)
FROM (
SELECT json_build_object(
'type', 'Feature',
'id', id,
'geometry', ST_AsGeoJSON(ST_ForcePolygonCW(wkb_geometry))::json,
'properties', to_jsonb(row) - 'id' - 'wkb_geometry'
) AS feature
FROM (SELECT * FROM gis_states LIMIT 1) AS row
) AS features
The resulting data-set (https://pastebin.com/hvFQXUTr) does not validate at http://geojsonlint.com, even though I am using ST_ForcePolygonCW:
Line 1: Polygons and MultiPolygons should follow the right-hand rule
Any suggestions on how to fix this?
postgis geojson
edited Dec 19 '18 at 22:56
PolyGeo♦
53.2k1779238
asked Dec 19 '18 at 15:00
mike.bronner
1739
I am using the following query to create a GeoJson response:
SELECT json_build_object(
'type', 'FeatureCollection',
'features', jsonb_agg(feature)
)
FROM (
SELECT json_build_object(
'type', 'Feature',
'id', id,
'geometry', ST_AsGeoJSON(ST_ForcePolygonCW(wkb_geometry))::json,
'properties', to_jsonb(row) - 'id' - 'wkb_geometry'
) AS feature
FROM (SELECT * FROM gis_states LIMIT 1) AS row
) AS features
The resulting data-set (https://pastebin.com/hvFQXUTr) does not validate at http://geojsonlint.com, even though I am using ST_ForcePolygonCW:
Line 1: Polygons and MultiPolygons should follow the right-hand rule
Any suggestions on how to fix this?
postgis geojson
postgis geojson
edited Dec 19 '18 at 22:56
PolyGeo♦
53.2k1779238
asked Dec 19 '18 at 15:00
mike.bronner
1739
edited Dec 19 '18 at 22:56
PolyGeo♦
53.2k1779238
asked Dec 19 '18 at 15:00
mike.bronner
1739
edited Dec 19 '18 at 22:56
PolyGeo♦
53.2k1779238
edited Dec 19 '18 at 22:56
PolyGeo♦
53.2k1779238
edited Dec 19 '18 at 22:56
PolyGeo♦
53.2k1779238
53.2k1779238
asked Dec 19 '18 at 15:00
mike.bronner
1739
asked Dec 19 '18 at 15:00
mike.bronner
1739
asked Dec 19 '18 at 15:00
mike.bronner
1739
1739
Related: gis.stackexchange.com/questions/259944/…
– RoVo
Dec 19 '18 at 15:07
add a comment |
Related: gis.stackexchange.com/questions/259944/…
– RoVo
Dec 19 '18 at 15:07
Related: gis.stackexchange.com/questions/259944/…
– RoVo
Dec 19 '18 at 15:07
Related: gis.stackexchange.com/questions/259944/…
– RoVo
Dec 19 '18 at 15:07
add a comment |
1 Answer
1
active
oldest
votes
OK, so the documentation (https://postgis.net/docs/ST_ForceRHR.html) states that ST_ForcePolygonCW is a synonym of ST_ForceRHR(). However, I wonder if the linter at http://geojsonlint.com/ is working properly, or perhaps the error is too ambiguous, as I got it to render correctly by using ST_ForcePolygonCCW, which is the opposite.
answered Dec 19 '18 at 15:05
mike.bronner
1739
2
The problem is that "Right-Hand-Rule" isn't a very useful term in GIS. Some GIS software (e.g., PostGIS) uses it to refer mean that the interior of a boundary is to your right as you walk around it (clockwise orientation). In most other contexts, it refers to the direction your fingers curl when the thumb of your right hand is pointing towards your head (counterclockwise orientation).
– dbaston
Dec 19 '18 at 19:04
add a comment |
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OK, so the documentation (https://postgis.net/docs/ST_ForceRHR.html) states that ST_ForcePolygonCW is a synonym of ST_ForceRHR(). However, I wonder if the linter at http://geojsonlint.com/ is working properly, or perhaps the error is too ambiguous, as I got it to render correctly by using ST_ForcePolygonCCW, which is the opposite.
answered Dec 19 '18 at 15:05
mike.bronner
1739
2
The problem is that "Right-Hand-Rule" isn't a very useful term in GIS. Some GIS software (e.g., PostGIS) uses it to refer mean that the interior of a boundary is to your right as you walk around it (clockwise orientation). In most other contexts, it refers to the direction your fingers curl when the thumb of your right hand is pointing towards your head (counterclockwise orientation).
– dbaston
Dec 19 '18 at 19:04
add a comment |
OK, so the documentation (https://postgis.net/docs/ST_ForceRHR.html) states that ST_ForcePolygonCW is a synonym of ST_ForceRHR(). However, I wonder if the linter at http://geojsonlint.com/ is working properly, or perhaps the error is too ambiguous, as I got it to render correctly by using ST_ForcePolygonCCW, which is the opposite.
answered Dec 19 '18 at 15:05
mike.bronner
1739
2
The problem is that "Right-Hand-Rule" isn't a very useful term in GIS. Some GIS software (e.g., PostGIS) uses it to refer mean that the interior of a boundary is to your right as you walk around it (clockwise orientation). In most other contexts, it refers to the direction your fingers curl when the thumb of your right hand is pointing towards your head (counterclockwise orientation).
– dbaston
Dec 19 '18 at 19:04
add a comment |
OK, so the documentation (https://postgis.net/docs/ST_ForceRHR.html) states that ST_ForcePolygonCW is a synonym of ST_ForceRHR(). However, I wonder if the linter at http://geojsonlint.com/ is working properly, or perhaps the error is too ambiguous, as I got it to render correctly by using ST_ForcePolygonCCW, which is the opposite.
answered Dec 19 '18 at 15:05
mike.bronner
1739
OK, so the documentation (https://postgis.net/docs/ST_ForceRHR.html) states that ST_ForcePolygonCW is a synonym of ST_ForceRHR(). However, I wonder if the linter at http://geojsonlint.com/ is working properly, or perhaps the error is too ambiguous, as I got it to render correctly by using ST_ForcePolygonCCW, which is the opposite.
answered Dec 19 '18 at 15:05
mike.bronner
1739
answered Dec 19 '18 at 15:05
mike.bronner
1739
answered Dec 19 '18 at 15:05
mike.bronner
1739
answered Dec 19 '18 at 15:05
mike.bronner
1739
1739
2
The problem is that "Right-Hand-Rule" isn't a very useful term in GIS. Some GIS software (e.g., PostGIS) uses it to refer mean that the interior of a boundary is to your right as you walk around it (clockwise orientation). In most other contexts, it refers to the direction your fingers curl when the thumb of your right hand is pointing towards your head (counterclockwise orientation).
– dbaston
Dec 19 '18 at 19:04
add a comment |
2
The problem is that "Right-Hand-Rule" isn't a very useful term in GIS. Some GIS software (e.g., PostGIS) uses it to refer mean that the interior of a boundary is to your right as you walk around it (clockwise orientation). In most other contexts, it refers to the direction your fingers curl when the thumb of your right hand is pointing towards your head (counterclockwise orientation).
– dbaston
Dec 19 '18 at 19:04
2
2
The problem is that "Right-Hand-Rule" isn't a very useful term in GIS. Some GIS software (e.g., PostGIS) uses it to refer mean that the interior of a boundary is to your right as you walk around it (clockwise orientation). In most other contexts, it refers to the direction your fingers curl when the thumb of your right hand is pointing towards your head (counterclockwise orientation).
– dbaston
Dec 19 '18 at 19:04
The problem is that "Right-Hand-Rule" isn't a very useful term in GIS. Some GIS software (e.g., PostGIS) uses it to refer mean that the interior of a boundary is to your right as you walk around it (clockwise orientation). In most other contexts, it refers to the direction your fingers curl when the thumb of your right hand is pointing towards your head (counterclockwise orientation).
– dbaston
Dec 19 '18 at 19:04
add a comment |
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Related: gis.stackexchange.com/questions/259944/…
– RoVo
Dec 19 '18 at 15:07