QGIS Geometry Generator Line Type
I am trying to create a line style for a multiline geometry. I am hoping to create a linetype which looks like the following
The Points are not an issue, its the line/lines entering and exiting at the nodes. I was looking to use the Geometry Generator to solve the issue, by creating a buffer, based on the midpoint of each section of the multiline geometry, less the length of the start line and end line and using dissolve to create the line.
The dataset is a PostGIS vector dataset, I cant duplicate or break the lines into individual lines.
qgis postgis geometry-generator
edited Mar 26 at 10:11
PolyGeo♦
53.8k1781245
asked Mar 25 at 14:57
Richard McDonnellRichard McDonnell
657
add a comment |
I am trying to create a line style for a multiline geometry. I am hoping to create a linetype which looks like the following
The Points are not an issue, its the line/lines entering and exiting at the nodes. I was looking to use the Geometry Generator to solve the issue, by creating a buffer, based on the midpoint of each section of the multiline geometry, less the length of the start line and end line and using dissolve to create the line.
The dataset is a PostGIS vector dataset, I cant duplicate or break the lines into individual lines.
qgis postgis geometry-generator
edited Mar 26 at 10:11
PolyGeo♦
53.8k1781245
asked Mar 25 at 14:57
Richard McDonnellRichard McDonnell
657
add a comment |
I am trying to create a line style for a multiline geometry. I am hoping to create a linetype which looks like the following
The Points are not an issue, its the line/lines entering and exiting at the nodes. I was looking to use the Geometry Generator to solve the issue, by creating a buffer, based on the midpoint of each section of the multiline geometry, less the length of the start line and end line and using dissolve to create the line.
The dataset is a PostGIS vector dataset, I cant duplicate or break the lines into individual lines.
qgis postgis geometry-generator
edited Mar 26 at 10:11
PolyGeo♦
53.8k1781245
asked Mar 25 at 14:57
Richard McDonnellRichard McDonnell
657
I am trying to create a line style for a multiline geometry. I am hoping to create a linetype which looks like the following
The Points are not an issue, its the line/lines entering and exiting at the nodes. I was looking to use the Geometry Generator to solve the issue, by creating a buffer, based on the midpoint of each section of the multiline geometry, less the length of the start line and end line and using dissolve to create the line.
The dataset is a PostGIS vector dataset, I cant duplicate or break the lines into individual lines.
qgis postgis geometry-generator
qgis postgis geometry-generator
edited Mar 26 at 10:11
PolyGeo♦
53.8k1781245
asked Mar 25 at 14:57
Richard McDonnellRichard McDonnell
657
edited Mar 26 at 10:11
PolyGeo♦
53.8k1781245
asked Mar 25 at 14:57
Richard McDonnellRichard McDonnell
657
edited Mar 26 at 10:11
PolyGeo♦
53.8k1781245
edited Mar 26 at 10:11
PolyGeo♦
53.8k1781245
edited Mar 26 at 10:11
PolyGeo♦
53.8k1781245
53.8k1781245
asked Mar 25 at 14:57
Richard McDonnellRichard McDonnell
657
asked Mar 25 at 14:57
Richard McDonnellRichard McDonnell
657
asked Mar 25 at 14:57
Richard McDonnellRichard McDonnell
657
657
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You can use the following expression together with geometry generator. Use Linestring as geometry type.
intersection(buffer(nodes_to_points( $geometry),2000),$geometry)
Adjust the buffer distance to your needs.
tested in QGIS 3.6
answered Mar 25 at 17:28
MrXsquaredMrXsquared
2,0111620
Well done. I was working on a similar answer but I couldn't find the functionnodes_to_points()because I was searching for "vertex" instead of "note" in the expression builder. So my method required exporting the vertices as a separate layer.
– csk
Mar 25 at 17:31
MrXsquared, Thank you very much for this, much appreciated!!
– Richard McDonnell
Mar 26 at 9:54
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
You can use the following expression together with geometry generator. Use Linestring as geometry type.
intersection(buffer(nodes_to_points( $geometry),2000),$geometry)
Adjust the buffer distance to your needs.
tested in QGIS 3.6
answered Mar 25 at 17:28
MrXsquaredMrXsquared
2,0111620
Well done. I was working on a similar answer but I couldn't find the functionnodes_to_points()because I was searching for "vertex" instead of "note" in the expression builder. So my method required exporting the vertices as a separate layer.
– csk
Mar 25 at 17:31
MrXsquared, Thank you very much for this, much appreciated!!
– Richard McDonnell
Mar 26 at 9:54
add a comment |
You can use the following expression together with geometry generator. Use Linestring as geometry type.
intersection(buffer(nodes_to_points( $geometry),2000),$geometry)
Adjust the buffer distance to your needs.
tested in QGIS 3.6
answered Mar 25 at 17:28
MrXsquaredMrXsquared
2,0111620
Well done. I was working on a similar answer but I couldn't find the functionnodes_to_points()because I was searching for "vertex" instead of "note" in the expression builder. So my method required exporting the vertices as a separate layer.
– csk
Mar 25 at 17:31
MrXsquared, Thank you very much for this, much appreciated!!
– Richard McDonnell
Mar 26 at 9:54
add a comment |
You can use the following expression together with geometry generator. Use Linestring as geometry type.
intersection(buffer(nodes_to_points( $geometry),2000),$geometry)
Adjust the buffer distance to your needs.
tested in QGIS 3.6
answered Mar 25 at 17:28
MrXsquaredMrXsquared
2,0111620
You can use the following expression together with geometry generator. Use Linestring as geometry type.
intersection(buffer(nodes_to_points( $geometry),2000),$geometry)
Adjust the buffer distance to your needs.
tested in QGIS 3.6
answered Mar 25 at 17:28
MrXsquaredMrXsquared
2,0111620
answered Mar 25 at 17:28
MrXsquaredMrXsquared
2,0111620
answered Mar 25 at 17:28
MrXsquaredMrXsquared
2,0111620
answered Mar 25 at 17:28
MrXsquaredMrXsquared
2,0111620
2,0111620
Well done. I was working on a similar answer but I couldn't find the functionnodes_to_points()because I was searching for "vertex" instead of "note" in the expression builder. So my method required exporting the vertices as a separate layer.
– csk
Mar 25 at 17:31
MrXsquared, Thank you very much for this, much appreciated!!
– Richard McDonnell
Mar 26 at 9:54
add a comment |
Well done. I was working on a similar answer but I couldn't find the functionnodes_to_points()because I was searching for "vertex" instead of "note" in the expression builder. So my method required exporting the vertices as a separate layer.
– csk
Mar 25 at 17:31
MrXsquared, Thank you very much for this, much appreciated!!
– Richard McDonnell
Mar 26 at 9:54
Well done. I was working on a similar answer but I couldn't find the function
nodes_to_points() because I was searching for "vertex" instead of "note" in the expression builder. So my method required exporting the vertices as a separate layer.– csk
Mar 25 at 17:31
Well done. I was working on a similar answer but I couldn't find the function
nodes_to_points() because I was searching for "vertex" instead of "note" in the expression builder. So my method required exporting the vertices as a separate layer.– csk
Mar 25 at 17:31
MrXsquared, Thank you very much for this, much appreciated!!
– Richard McDonnell
Mar 26 at 9:54
MrXsquared, Thank you very much for this, much appreciated!!
– Richard McDonnell
Mar 26 at 9:54
add a comment |
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