How to convert MultiLineStringZ object to MultilineString object?
Clash Royale CLAN TAG#URR8PPP
I have CAD-data which I transformed to shapefiles. Currently after the transformation the objects still have a Z value which is useless to me.
My question is: How do I convert a MultiLineStringZ-object to a MultiLineString-object?
qgis postgis postgresql
edited Dec 28 '18 at 8:07
Erik
2,830219
asked Dec 28 '18 at 7:32
şener alkanşener alkan
61
add a comment |
I have CAD-data which I transformed to shapefiles. Currently after the transformation the objects still have a Z value which is useless to me.
My question is: How do I convert a MultiLineStringZ-object to a MultiLineString-object?
qgis postgis postgresql
edited Dec 28 '18 at 8:07
Erik
2,830219
asked Dec 28 '18 at 7:32
şener alkanşener alkan
61
add a comment |
I have CAD-data which I transformed to shapefiles. Currently after the transformation the objects still have a Z value which is useless to me.
My question is: How do I convert a MultiLineStringZ-object to a MultiLineString-object?
qgis postgis postgresql
edited Dec 28 '18 at 8:07
Erik
2,830219
asked Dec 28 '18 at 7:32
şener alkanşener alkan
61
I have CAD-data which I transformed to shapefiles. Currently after the transformation the objects still have a Z value which is useless to me.
My question is: How do I convert a MultiLineStringZ-object to a MultiLineString-object?
qgis postgis postgresql
qgis postgis postgresql
edited Dec 28 '18 at 8:07
Erik
2,830219
asked Dec 28 '18 at 7:32
şener alkanşener alkan
61
edited Dec 28 '18 at 8:07
Erik
2,830219
asked Dec 28 '18 at 7:32
şener alkanşener alkan
61
edited Dec 28 '18 at 8:07
Erik
2,830219
edited Dec 28 '18 at 8:07
Erik
2,830219
edited Dec 28 '18 at 8:07
Erik
2,830219
2,830219
asked Dec 28 '18 at 7:32
şener alkanşener alkan
61
asked Dec 28 '18 at 7:32
şener alkanşener alkan
61
asked Dec 28 '18 at 7:32
şener alkanşener alkan
61
61
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
There is a ST_Force2d function in PostGIS which does the job. A new table should be created with 2D geometry and use an insert statement with select to populate the new table:
insert into new_table (geom, col1, col2, col3)
select ST_Force2D(geom), col1, col2, col2 from old_table;
You should substitute your real column names into col1, col2, ...
You can query the table structure with in psql
d old_table
or you can use pgadmin with GUI.
answered Dec 28 '18 at 8:09
ZoltanZoltan
3,042716
It's working, Thanks for your answer
– şener alkan
Dec 28 '18 at 8:51
Could you accept my answer clicking on the up arrow beside my answer?
– Zoltan
Dec 28 '18 at 10:48
add a comment |
Run the drop z values algorithm from the QGIS processing toolbox
edited Dec 28 '18 at 8:39
Erik
2,830219
answered Dec 28 '18 at 8:10
ndawsonndawson
18.3k22641
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
There is a ST_Force2d function in PostGIS which does the job. A new table should be created with 2D geometry and use an insert statement with select to populate the new table:
insert into new_table (geom, col1, col2, col3)
select ST_Force2D(geom), col1, col2, col2 from old_table;
You should substitute your real column names into col1, col2, ...
You can query the table structure with in psql
d old_table
or you can use pgadmin with GUI.
answered Dec 28 '18 at 8:09
ZoltanZoltan
3,042716
It's working, Thanks for your answer
– şener alkan
Dec 28 '18 at 8:51
Could you accept my answer clicking on the up arrow beside my answer?
– Zoltan
Dec 28 '18 at 10:48
add a comment |
There is a ST_Force2d function in PostGIS which does the job. A new table should be created with 2D geometry and use an insert statement with select to populate the new table:
insert into new_table (geom, col1, col2, col3)
select ST_Force2D(geom), col1, col2, col2 from old_table;
You should substitute your real column names into col1, col2, ...
You can query the table structure with in psql
d old_table
or you can use pgadmin with GUI.
answered Dec 28 '18 at 8:09
ZoltanZoltan
3,042716
It's working, Thanks for your answer
– şener alkan
Dec 28 '18 at 8:51
Could you accept my answer clicking on the up arrow beside my answer?
– Zoltan
Dec 28 '18 at 10:48
add a comment |
There is a ST_Force2d function in PostGIS which does the job. A new table should be created with 2D geometry and use an insert statement with select to populate the new table:
insert into new_table (geom, col1, col2, col3)
select ST_Force2D(geom), col1, col2, col2 from old_table;
You should substitute your real column names into col1, col2, ...
You can query the table structure with in psql
d old_table
or you can use pgadmin with GUI.
answered Dec 28 '18 at 8:09
ZoltanZoltan
3,042716
There is a ST_Force2d function in PostGIS which does the job. A new table should be created with 2D geometry and use an insert statement with select to populate the new table:
insert into new_table (geom, col1, col2, col3)
select ST_Force2D(geom), col1, col2, col2 from old_table;
You should substitute your real column names into col1, col2, ...
You can query the table structure with in psql
d old_table
or you can use pgadmin with GUI.
answered Dec 28 '18 at 8:09
ZoltanZoltan
3,042716
answered Dec 28 '18 at 8:09
ZoltanZoltan
3,042716
answered Dec 28 '18 at 8:09
ZoltanZoltan
3,042716
answered Dec 28 '18 at 8:09
ZoltanZoltan
3,042716
3,042716
It's working, Thanks for your answer
– şener alkan
Dec 28 '18 at 8:51
Could you accept my answer clicking on the up arrow beside my answer?
– Zoltan
Dec 28 '18 at 10:48
add a comment |
It's working, Thanks for your answer
– şener alkan
Dec 28 '18 at 8:51
Could you accept my answer clicking on the up arrow beside my answer?
– Zoltan
Dec 28 '18 at 10:48
It's working, Thanks for your answer
– şener alkan
Dec 28 '18 at 8:51
It's working, Thanks for your answer
– şener alkan
Dec 28 '18 at 8:51
Could you accept my answer clicking on the up arrow beside my answer?
– Zoltan
Dec 28 '18 at 10:48
Could you accept my answer clicking on the up arrow beside my answer?
– Zoltan
Dec 28 '18 at 10:48
add a comment |
Run the drop z values algorithm from the QGIS processing toolbox
edited Dec 28 '18 at 8:39
Erik
2,830219
answered Dec 28 '18 at 8:10
ndawsonndawson
18.3k22641
add a comment |
Run the drop z values algorithm from the QGIS processing toolbox
edited Dec 28 '18 at 8:39
Erik
2,830219
answered Dec 28 '18 at 8:10
ndawsonndawson
18.3k22641
add a comment |
Run the drop z values algorithm from the QGIS processing toolbox
edited Dec 28 '18 at 8:39
Erik
2,830219
answered Dec 28 '18 at 8:10
ndawsonndawson
18.3k22641
Run the drop z values algorithm from the QGIS processing toolbox
edited Dec 28 '18 at 8:39
Erik
2,830219
answered Dec 28 '18 at 8:10
ndawsonndawson
18.3k22641
edited Dec 28 '18 at 8:39
Erik
2,830219
edited Dec 28 '18 at 8:39
Erik
2,830219
edited Dec 28 '18 at 8:39
Erik
2,830219
2,830219
answered Dec 28 '18 at 8:10
ndawsonndawson
18.3k22641
answered Dec 28 '18 at 8:10
ndawsonndawson
18.3k22641
answered Dec 28 '18 at 8:10
ndawsonndawson
18.3k22641
18.3k22641
add a comment |
add a comment |
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