ST_Polygonize/Shapely cannot polygonize when overlapping with shared node/pointInstall Shapely with GEOS on...
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ST_Polygonize/Shapely cannot polygonize when overlapping with shared node/point
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.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}
I'm trying to use both polygonize_full (Shapely, python) and ST_Polygonize (postgis) to get all polygons from a set of line strings.
There is one case where it fails: when there is an "overlapping polygon" with a shared "node". (Pictured here: https://puu.sh/DaVkp/0848ce181a.png).
The result set is empty, but shapely provides a 'dangles' that provides the entire "failed" linestring,
Has anyone encountered this? Is there a way to gracefully solve this? I couldn't find anything in the docs.
I would expect these two be two separate polygons that overlap eachother, despite their shared node.
Here's the WKT I'm using for example.
MULTILINESTRING((-122.43682090001732 37.767652910517015,-122.4366733785215 37.767652910517015),(-122.4366733785215 37.767652910517015,-122.4366733785215 37.76759990327466),(-122.4366733785215 37.76759990327466,-122.43682090001732 37.76759990327466),(-122.43682090001732 37.76759990327466,-122.43682090001732 37.767652910517015),(-122.43682090001732 37.767652910517015,-122.43675920920998 37.767717579352684),(-122.43675920920998 37.767717579352684,-122.43675920920998 37.767626406895836),(-122.43675920920998 37.767626406895836,-122.43682090001732 37.767652910517015))
postgis shapely polygonize geos
edited 4 mins ago
wetland
3,89043677
asked 14 mins ago
Kevin RedmanKevin Redman
134
add a comment |
I'm trying to use both polygonize_full (Shapely, python) and ST_Polygonize (postgis) to get all polygons from a set of line strings.
There is one case where it fails: when there is an "overlapping polygon" with a shared "node". (Pictured here: https://puu.sh/DaVkp/0848ce181a.png).
The result set is empty, but shapely provides a 'dangles' that provides the entire "failed" linestring,
Has anyone encountered this? Is there a way to gracefully solve this? I couldn't find anything in the docs.
I would expect these two be two separate polygons that overlap eachother, despite their shared node.
Here's the WKT I'm using for example.
MULTILINESTRING((-122.43682090001732 37.767652910517015,-122.4366733785215 37.767652910517015),(-122.4366733785215 37.767652910517015,-122.4366733785215 37.76759990327466),(-122.4366733785215 37.76759990327466,-122.43682090001732 37.76759990327466),(-122.43682090001732 37.76759990327466,-122.43682090001732 37.767652910517015),(-122.43682090001732 37.767652910517015,-122.43675920920998 37.767717579352684),(-122.43675920920998 37.767717579352684,-122.43675920920998 37.767626406895836),(-122.43675920920998 37.767626406895836,-122.43682090001732 37.767652910517015))
postgis shapely polygonize geos
edited 4 mins ago
wetland
3,89043677
asked 14 mins ago
Kevin RedmanKevin Redman
134
add a comment |
I'm trying to use both polygonize_full (Shapely, python) and ST_Polygonize (postgis) to get all polygons from a set of line strings.
There is one case where it fails: when there is an "overlapping polygon" with a shared "node". (Pictured here: https://puu.sh/DaVkp/0848ce181a.png).
The result set is empty, but shapely provides a 'dangles' that provides the entire "failed" linestring,
Has anyone encountered this? Is there a way to gracefully solve this? I couldn't find anything in the docs.
I would expect these two be two separate polygons that overlap eachother, despite their shared node.
Here's the WKT I'm using for example.
MULTILINESTRING((-122.43682090001732 37.767652910517015,-122.4366733785215 37.767652910517015),(-122.4366733785215 37.767652910517015,-122.4366733785215 37.76759990327466),(-122.4366733785215 37.76759990327466,-122.43682090001732 37.76759990327466),(-122.43682090001732 37.76759990327466,-122.43682090001732 37.767652910517015),(-122.43682090001732 37.767652910517015,-122.43675920920998 37.767717579352684),(-122.43675920920998 37.767717579352684,-122.43675920920998 37.767626406895836),(-122.43675920920998 37.767626406895836,-122.43682090001732 37.767652910517015))
postgis shapely polygonize geos
edited 4 mins ago
wetland
3,89043677
asked 14 mins ago
Kevin RedmanKevin Redman
134
I'm trying to use both polygonize_full (Shapely, python) and ST_Polygonize (postgis) to get all polygons from a set of line strings.
There is one case where it fails: when there is an "overlapping polygon" with a shared "node". (Pictured here: https://puu.sh/DaVkp/0848ce181a.png).
The result set is empty, but shapely provides a 'dangles' that provides the entire "failed" linestring,
Has anyone encountered this? Is there a way to gracefully solve this? I couldn't find anything in the docs.
I would expect these two be two separate polygons that overlap eachother, despite their shared node.
Here's the WKT I'm using for example.
MULTILINESTRING((-122.43682090001732 37.767652910517015,-122.4366733785215 37.767652910517015),(-122.4366733785215 37.767652910517015,-122.4366733785215 37.76759990327466),(-122.4366733785215 37.76759990327466,-122.43682090001732 37.76759990327466),(-122.43682090001732 37.76759990327466,-122.43682090001732 37.767652910517015),(-122.43682090001732 37.767652910517015,-122.43675920920998 37.767717579352684),(-122.43675920920998 37.767717579352684,-122.43675920920998 37.767626406895836),(-122.43675920920998 37.767626406895836,-122.43682090001732 37.767652910517015))
postgis shapely polygonize geos
postgis shapely polygonize geos
edited 4 mins ago
wetland
3,89043677
asked 14 mins ago
Kevin RedmanKevin Redman
134
edited 4 mins ago
wetland
3,89043677
asked 14 mins ago
Kevin RedmanKevin Redman
134
edited 4 mins ago
wetland
3,89043677
edited 4 mins ago
wetland
3,89043677
edited 4 mins ago
wetland
3,89043677
3,89043677
asked 14 mins ago
Kevin RedmanKevin Redman
134
asked 14 mins ago
Kevin RedmanKevin Redman
134
asked 14 mins ago
Kevin RedmanKevin Redman
134
134
add a comment |
add a comment |
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