How to extract spatial attributes of polygons in qgis?
I have a .shp file which contains polygons each of them representing one building. I would like to extract the x and y coordinates of each polygon as a row to a .csv file.
I could creat corner of polygons in points but I do not know how to extract points of each polygon separately as a row to .csv file.
Below is a picture of what I have done so far.
geospatial qgis spatial-query
asked Oct 16 '18 at 5:30
Maryam Rahmani MoghaddamMaryam Rahmani Moghaddam
140110
add a comment |
I have a .shp file which contains polygons each of them representing one building. I would like to extract the x and y coordinates of each polygon as a row to a .csv file.
I could creat corner of polygons in points but I do not know how to extract points of each polygon separately as a row to .csv file.
Below is a picture of what I have done so far.
geospatial qgis spatial-query
asked Oct 16 '18 at 5:30
Maryam Rahmani MoghaddamMaryam Rahmani Moghaddam
140110
add a comment |
I have a .shp file which contains polygons each of them representing one building. I would like to extract the x and y coordinates of each polygon as a row to a .csv file.
I could creat corner of polygons in points but I do not know how to extract points of each polygon separately as a row to .csv file.
Below is a picture of what I have done so far.
geospatial qgis spatial-query
asked Oct 16 '18 at 5:30
Maryam Rahmani MoghaddamMaryam Rahmani Moghaddam
140110
I have a .shp file which contains polygons each of them representing one building. I would like to extract the x and y coordinates of each polygon as a row to a .csv file.
I could creat corner of polygons in points but I do not know how to extract points of each polygon separately as a row to .csv file.
Below is a picture of what I have done so far.
geospatial qgis spatial-query
geospatial qgis spatial-query
asked Oct 16 '18 at 5:30
Maryam Rahmani MoghaddamMaryam Rahmani Moghaddam
140110
asked Oct 16 '18 at 5:30
Maryam Rahmani MoghaddamMaryam Rahmani Moghaddam
140110
asked Oct 16 '18 at 5:30
Maryam Rahmani MoghaddamMaryam Rahmani Moghaddam
140110
asked Oct 16 '18 at 5:30
Maryam Rahmani MoghaddamMaryam Rahmani Moghaddam
140110
asked Oct 16 '18 at 5:30
Maryam Rahmani MoghaddamMaryam Rahmani Moghaddam
140110
140110
add a comment |
add a comment |
1 Answer
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One solution is to use the geom_to_wkt (well-known text) function in the field calculator to create a new field:
geom_to_wkt($geometry)
This creates a text representation of the polygon as a single row. You could then export the attribute table to a csv. When you export (save as..), go to layer options and change the separator to semicolon, otherwise you will end up with problems.
Depending on your fluency with R or python, there would be ways to access the coordinates using a short script as well.
answered Nov 20 '18 at 22:33
alex_danielssenalex_danielssen
1096
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
One solution is to use the geom_to_wkt (well-known text) function in the field calculator to create a new field:
geom_to_wkt($geometry)
This creates a text representation of the polygon as a single row. You could then export the attribute table to a csv. When you export (save as..), go to layer options and change the separator to semicolon, otherwise you will end up with problems.
Depending on your fluency with R or python, there would be ways to access the coordinates using a short script as well.
answered Nov 20 '18 at 22:33
alex_danielssenalex_danielssen
1096
add a comment |
One solution is to use the geom_to_wkt (well-known text) function in the field calculator to create a new field:
geom_to_wkt($geometry)
This creates a text representation of the polygon as a single row. You could then export the attribute table to a csv. When you export (save as..), go to layer options and change the separator to semicolon, otherwise you will end up with problems.
Depending on your fluency with R or python, there would be ways to access the coordinates using a short script as well.
answered Nov 20 '18 at 22:33
alex_danielssenalex_danielssen
1096
add a comment |
One solution is to use the geom_to_wkt (well-known text) function in the field calculator to create a new field:
geom_to_wkt($geometry)
This creates a text representation of the polygon as a single row. You could then export the attribute table to a csv. When you export (save as..), go to layer options and change the separator to semicolon, otherwise you will end up with problems.
Depending on your fluency with R or python, there would be ways to access the coordinates using a short script as well.
answered Nov 20 '18 at 22:33
alex_danielssenalex_danielssen
1096
One solution is to use the geom_to_wkt (well-known text) function in the field calculator to create a new field:
geom_to_wkt($geometry)
This creates a text representation of the polygon as a single row. You could then export the attribute table to a csv. When you export (save as..), go to layer options and change the separator to semicolon, otherwise you will end up with problems.
Depending on your fluency with R or python, there would be ways to access the coordinates using a short script as well.
answered Nov 20 '18 at 22:33
alex_danielssenalex_danielssen
1096
answered Nov 20 '18 at 22:33
alex_danielssenalex_danielssen
1096
answered Nov 20 '18 at 22:33
alex_danielssenalex_danielssen
1096
answered Nov 20 '18 at 22:33
alex_danielssenalex_danielssen
1096
1096
add a comment |
add a comment |
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