How to convert MultiLineStringZ object to MultilineString object?
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
2,830118
asked Dec 28 '18 at 7:32
şener 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
2,830118
asked Dec 28 '18 at 7:32
şener 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
2,830118
asked Dec 28 '18 at 7:32
şener 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
2,830118
asked Dec 28 '18 at 7:32
şener alkan
61
edited Dec 28 '18 at 8:07
Erik
2,830118
asked Dec 28 '18 at 7:32
şener alkan
61
edited Dec 28 '18 at 8:07
Erik
2,830118
edited Dec 28 '18 at 8:07
Erik
2,830118
edited Dec 28 '18 at 8:07
Erik
2,830118
2,830118
asked Dec 28 '18 at 7:32
şener alkan
61
asked Dec 28 '18 at 7:32
şener alkan
61
asked Dec 28 '18 at 7:32
şener 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
Zoltan
3,027716
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
2,830118
answered Dec 28 '18 at 8:10
ndawson
18.2k22640
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
Zoltan
3,027716
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
Zoltan
3,027716
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
Zoltan
3,027716
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
Zoltan
3,027716
answered Dec 28 '18 at 8:09
Zoltan
3,027716
answered Dec 28 '18 at 8:09
Zoltan
3,027716
answered Dec 28 '18 at 8:09
Zoltan
3,027716
3,027716
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
2,830118
answered Dec 28 '18 at 8:10
ndawson
18.2k22640
add a comment |
Run the drop z values algorithm from the QGIS processing toolbox
edited Dec 28 '18 at 8:39
Erik
2,830118
answered Dec 28 '18 at 8:10
ndawson
18.2k22640
add a comment |
Run the drop z values algorithm from the QGIS processing toolbox
edited Dec 28 '18 at 8:39
Erik
2,830118
answered Dec 28 '18 at 8:10
ndawson
18.2k22640
Run the drop z values algorithm from the QGIS processing toolbox
edited Dec 28 '18 at 8:39
Erik
2,830118
answered Dec 28 '18 at 8:10
ndawson
18.2k22640
edited Dec 28 '18 at 8:39
Erik
2,830118
edited Dec 28 '18 at 8:39
Erik
2,830118
edited Dec 28 '18 at 8:39
Erik
2,830118
2,830118
answered Dec 28 '18 at 8:10
ndawson
18.2k22640
answered Dec 28 '18 at 8:10
ndawson
18.2k22640
answered Dec 28 '18 at 8:10
ndawson
18.2k22640
18.2k22640
add a comment |
add a comment |
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