Line String Self-Intersection points in PostGISpostgis, extrapolate a lineCreating space at intersection of...
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Line String Self-Intersection points in PostGIS
postgis, extrapolate a lineCreating space at intersection of two linksPoint of intersection issues with PostgreSQL/PostGIS?How to findout direction PostGISIntersection between line & polygon in PostGIS?Identify intersection points in linestrings using PostGISDoes PostGIS Catch Self-Intersections Involving the Start / End points to a Line or Area?Identifying points on the intersection of three roads in PostGISFinding self-intersection in PostGIS
I'm trying to get all the points from a Self-Intersection Line String but not find out the self intersection point in the below attached image.
The intersection point touches on the same feature how to find out the self intersection point in postGIS?
qgis python postgis pyqgis postgresql
asked Jan 25 at 17:31
BhuvaneswariBhuvaneswari
193
bumped to the homepage by Community♦ 10 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
I'm trying to get all the points from a Self-Intersection Line String but not find out the self intersection point in the below attached image.
The intersection point touches on the same feature how to find out the self intersection point in postGIS?
qgis python postgis pyqgis postgresql
asked Jan 25 at 17:31
BhuvaneswariBhuvaneswari
193
bumped to the homepage by Community♦ 10 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
postgis.net/docs/ST_IsValidReason.html
– Cyril
Jan 25 at 17:45
I am used the ST_IsValidReason but it returns true in that above case
– Bhuvaneswari
Jan 26 at 8:22
use a line of code in your script: st_isvalid (geom)=false
– Cyril
Jan 26 at 10:27
st_isvalid(geom) return true in that feature. Here how to find out that point touches on the segment or vertex in self feature.
– Bhuvaneswari
Jan 28 at 2:24
postgis.net/docs/ST_IsSimple.html
– Cyril
Feb 5 at 19:30
add a comment |
I'm trying to get all the points from a Self-Intersection Line String but not find out the self intersection point in the below attached image.
The intersection point touches on the same feature how to find out the self intersection point in postGIS?
qgis python postgis pyqgis postgresql
asked Jan 25 at 17:31
BhuvaneswariBhuvaneswari
193
I'm trying to get all the points from a Self-Intersection Line String but not find out the self intersection point in the below attached image.
The intersection point touches on the same feature how to find out the self intersection point in postGIS?
qgis python postgis pyqgis postgresql
qgis python postgis pyqgis postgresql
asked Jan 25 at 17:31
BhuvaneswariBhuvaneswari
193
asked Jan 25 at 17:31
BhuvaneswariBhuvaneswari
193
asked Jan 25 at 17:31
BhuvaneswariBhuvaneswari
193
asked Jan 25 at 17:31
BhuvaneswariBhuvaneswari
193
asked Jan 25 at 17:31
BhuvaneswariBhuvaneswari
193
193
bumped to the homepage by Community♦ 10 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
bumped to the homepage by Community♦ 10 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
postgis.net/docs/ST_IsValidReason.html
– Cyril
Jan 25 at 17:45
I am used the ST_IsValidReason but it returns true in that above case
– Bhuvaneswari
Jan 26 at 8:22
use a line of code in your script: st_isvalid (geom)=false
– Cyril
Jan 26 at 10:27
st_isvalid(geom) return true in that feature. Here how to find out that point touches on the segment or vertex in self feature.
– Bhuvaneswari
Jan 28 at 2:24
postgis.net/docs/ST_IsSimple.html
– Cyril
Feb 5 at 19:30
add a comment |
postgis.net/docs/ST_IsValidReason.html
– Cyril
Jan 25 at 17:45
I am used the ST_IsValidReason but it returns true in that above case
– Bhuvaneswari
Jan 26 at 8:22
use a line of code in your script: st_isvalid (geom)=false
– Cyril
Jan 26 at 10:27
st_isvalid(geom) return true in that feature. Here how to find out that point touches on the segment or vertex in self feature.
– Bhuvaneswari
Jan 28 at 2:24
postgis.net/docs/ST_IsSimple.html
– Cyril
Feb 5 at 19:30
postgis.net/docs/ST_IsValidReason.html
– Cyril
Jan 25 at 17:45
postgis.net/docs/ST_IsValidReason.html
– Cyril
Jan 25 at 17:45
I am used the ST_IsValidReason but it returns true in that above case
– Bhuvaneswari
Jan 26 at 8:22
I am used the ST_IsValidReason but it returns true in that above case
– Bhuvaneswari
Jan 26 at 8:22
use a line of code in your script: st_isvalid (geom)=false
– Cyril
Jan 26 at 10:27
use a line of code in your script: st_isvalid (geom)=false
– Cyril
Jan 26 at 10:27
st_isvalid(geom) return true in that feature. Here how to find out that point touches on the segment or vertex in self feature.
– Bhuvaneswari
Jan 28 at 2:24
st_isvalid(geom) return true in that feature. Here how to find out that point touches on the segment or vertex in self feature.
– Bhuvaneswari
Jan 28 at 2:24
postgis.net/docs/ST_IsSimple.html
– Cyril
Feb 5 at 19:30
postgis.net/docs/ST_IsSimple.html
– Cyril
Feb 5 at 19:30
add a comment |
1 Answer
1
active
oldest
votes
PostGIS has a rich functionality, as an option you can solve your problem as follows:
select st_intersection(a.geom, b.geom) as geom
from yuor_table_name as a, yuor_table_name as b
where st_touches(a.geom, b.geom);
Try to dig deeper...
answered Jan 28 at 6:44
CyrilCyril
7971214
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
PostGIS has a rich functionality, as an option you can solve your problem as follows:
select st_intersection(a.geom, b.geom) as geom
from yuor_table_name as a, yuor_table_name as b
where st_touches(a.geom, b.geom);
Try to dig deeper...
answered Jan 28 at 6:44
CyrilCyril
7971214
add a comment |
PostGIS has a rich functionality, as an option you can solve your problem as follows:
select st_intersection(a.geom, b.geom) as geom
from yuor_table_name as a, yuor_table_name as b
where st_touches(a.geom, b.geom);
Try to dig deeper...
answered Jan 28 at 6:44
CyrilCyril
7971214
add a comment |
PostGIS has a rich functionality, as an option you can solve your problem as follows:
select st_intersection(a.geom, b.geom) as geom
from yuor_table_name as a, yuor_table_name as b
where st_touches(a.geom, b.geom);
Try to dig deeper...
answered Jan 28 at 6:44
CyrilCyril
7971214
PostGIS has a rich functionality, as an option you can solve your problem as follows:
select st_intersection(a.geom, b.geom) as geom
from yuor_table_name as a, yuor_table_name as b
where st_touches(a.geom, b.geom);
Try to dig deeper...
answered Jan 28 at 6:44
CyrilCyril
7971214
answered Jan 28 at 6:44
CyrilCyril
7971214
answered Jan 28 at 6:44
CyrilCyril
7971214
answered Jan 28 at 6:44
CyrilCyril
7971214
7971214
add a comment |
add a comment |
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postgis.net/docs/ST_IsValidReason.html
– Cyril
Jan 25 at 17:45
I am used the ST_IsValidReason but it returns true in that above case
– Bhuvaneswari
Jan 26 at 8:22
use a line of code in your script: st_isvalid (geom)=false
– Cyril
Jan 26 at 10:27
st_isvalid(geom) return true in that feature. Here how to find out that point touches on the segment or vertex in self feature.
– Bhuvaneswari
Jan 28 at 2:24
postgis.net/docs/ST_IsSimple.html
– Cyril
Feb 5 at 19:30