Symbolizing Isochrones in QGIS
I have generated isochrones for London based on my parameters.
However, the isochrones by definition are overlapping polygons.
I would like to show the different polygons of the isochrones using different colors.
I have tried using gradient symbology, but the desired effect is not there since the overlapping polygons are making the different colors interact with each other.
I can separate the polygons into different files and then subtract each polygon from the others so that they don't overlap.
However, since I am relatively new to QGIS, I am wondering whether there is an alternate simpler way to achieve this visual effect?
I am using QGIS 3.4.1
qgis polygon symbology visualisation isochrone
asked Nov 13 '18 at 5:49
DotPiDotPi
4051417
add a comment |
I have generated isochrones for London based on my parameters.
However, the isochrones by definition are overlapping polygons.
I would like to show the different polygons of the isochrones using different colors.
I have tried using gradient symbology, but the desired effect is not there since the overlapping polygons are making the different colors interact with each other.
I can separate the polygons into different files and then subtract each polygon from the others so that they don't overlap.
However, since I am relatively new to QGIS, I am wondering whether there is an alternate simpler way to achieve this visual effect?
I am using QGIS 3.4.1
qgis polygon symbology visualisation isochrone
asked Nov 13 '18 at 5:49
DotPiDotPi
4051417
add a comment |
I have generated isochrones for London based on my parameters.
However, the isochrones by definition are overlapping polygons.
I would like to show the different polygons of the isochrones using different colors.
I have tried using gradient symbology, but the desired effect is not there since the overlapping polygons are making the different colors interact with each other.
I can separate the polygons into different files and then subtract each polygon from the others so that they don't overlap.
However, since I am relatively new to QGIS, I am wondering whether there is an alternate simpler way to achieve this visual effect?
I am using QGIS 3.4.1
qgis polygon symbology visualisation isochrone
asked Nov 13 '18 at 5:49
DotPiDotPi
4051417
I have generated isochrones for London based on my parameters.
However, the isochrones by definition are overlapping polygons.
I would like to show the different polygons of the isochrones using different colors.
I have tried using gradient symbology, but the desired effect is not there since the overlapping polygons are making the different colors interact with each other.
I can separate the polygons into different files and then subtract each polygon from the others so that they don't overlap.
However, since I am relatively new to QGIS, I am wondering whether there is an alternate simpler way to achieve this visual effect?
I am using QGIS 3.4.1
qgis polygon symbology visualisation isochrone
qgis polygon symbology visualisation isochrone
asked Nov 13 '18 at 5:49
DotPiDotPi
4051417
asked Nov 13 '18 at 5:49
DotPiDotPi
4051417
edited Nov 13 '18 at 7:11
DotPi
asked Nov 13 '18 at 5:49
DotPiDotPi
4051417
asked Nov 13 '18 at 5:49
DotPiDotPi
4051417
asked Nov 13 '18 at 5:49
DotPiDotPi
4051417
4051417
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You can use Union tool to get rid of the overlapping polygons and then add the colors you want to each polygon. Union tool is located under Vector -> Geoprocessing tools -> Union.
But if the overlapping polygons are located in one layer, then it is better to use v.clean tool under Processing toolbox -> GRASS GIS 7 commands -> Vector -> v.clean, and under Cleaning tool use Break, as you can see below:
In QGIS 3.4.1 it is under GRASS -> Vector -> v.clean and break is located under the cleaning tool:
It will remove overlapping polygons located in one polygon layer.
answered Nov 13 '18 at 6:18
ahmadhanbahmadhanb
21.8k31952
I am using QGIS v3.4.1 and I cannot see the parameter called 'Cleaning tool' inside the v.clean interface
– DotPi
Nov 13 '18 at 6:37
@DotPi I updated the answer considering QGIS 3.4.1. It is better to mention QGIS version in your question.
– ahmadhanb
Nov 13 '18 at 6:53
Updated Question. It works now.
– DotPi
Nov 13 '18 at 7:12
add a comment |
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1 Answer
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active
oldest
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can use Union tool to get rid of the overlapping polygons and then add the colors you want to each polygon. Union tool is located under Vector -> Geoprocessing tools -> Union.
But if the overlapping polygons are located in one layer, then it is better to use v.clean tool under Processing toolbox -> GRASS GIS 7 commands -> Vector -> v.clean, and under Cleaning tool use Break, as you can see below:
In QGIS 3.4.1 it is under GRASS -> Vector -> v.clean and break is located under the cleaning tool:
It will remove overlapping polygons located in one polygon layer.
answered Nov 13 '18 at 6:18
ahmadhanbahmadhanb
21.8k31952
I am using QGIS v3.4.1 and I cannot see the parameter called 'Cleaning tool' inside the v.clean interface
– DotPi
Nov 13 '18 at 6:37
@DotPi I updated the answer considering QGIS 3.4.1. It is better to mention QGIS version in your question.
– ahmadhanb
Nov 13 '18 at 6:53
Updated Question. It works now.
– DotPi
Nov 13 '18 at 7:12
add a comment |
You can use Union tool to get rid of the overlapping polygons and then add the colors you want to each polygon. Union tool is located under Vector -> Geoprocessing tools -> Union.
But if the overlapping polygons are located in one layer, then it is better to use v.clean tool under Processing toolbox -> GRASS GIS 7 commands -> Vector -> v.clean, and under Cleaning tool use Break, as you can see below:
In QGIS 3.4.1 it is under GRASS -> Vector -> v.clean and break is located under the cleaning tool:
It will remove overlapping polygons located in one polygon layer.
answered Nov 13 '18 at 6:18
ahmadhanbahmadhanb
21.8k31952
I am using QGIS v3.4.1 and I cannot see the parameter called 'Cleaning tool' inside the v.clean interface
– DotPi
Nov 13 '18 at 6:37
@DotPi I updated the answer considering QGIS 3.4.1. It is better to mention QGIS version in your question.
– ahmadhanb
Nov 13 '18 at 6:53
Updated Question. It works now.
– DotPi
Nov 13 '18 at 7:12
add a comment |
You can use Union tool to get rid of the overlapping polygons and then add the colors you want to each polygon. Union tool is located under Vector -> Geoprocessing tools -> Union.
But if the overlapping polygons are located in one layer, then it is better to use v.clean tool under Processing toolbox -> GRASS GIS 7 commands -> Vector -> v.clean, and under Cleaning tool use Break, as you can see below:
In QGIS 3.4.1 it is under GRASS -> Vector -> v.clean and break is located under the cleaning tool:
It will remove overlapping polygons located in one polygon layer.
answered Nov 13 '18 at 6:18
ahmadhanbahmadhanb
21.8k31952
You can use Union tool to get rid of the overlapping polygons and then add the colors you want to each polygon. Union tool is located under Vector -> Geoprocessing tools -> Union.
But if the overlapping polygons are located in one layer, then it is better to use v.clean tool under Processing toolbox -> GRASS GIS 7 commands -> Vector -> v.clean, and under Cleaning tool use Break, as you can see below:
In QGIS 3.4.1 it is under GRASS -> Vector -> v.clean and break is located under the cleaning tool:
It will remove overlapping polygons located in one polygon layer.
answered Nov 13 '18 at 6:18
ahmadhanbahmadhanb
21.8k31952
edited Nov 13 '18 at 6:52
answered Nov 13 '18 at 6:18
ahmadhanbahmadhanb
21.8k31952
answered Nov 13 '18 at 6:18
ahmadhanbahmadhanb
21.8k31952
answered Nov 13 '18 at 6:18
ahmadhanbahmadhanb
21.8k31952
21.8k31952
I am using QGIS v3.4.1 and I cannot see the parameter called 'Cleaning tool' inside the v.clean interface
– DotPi
Nov 13 '18 at 6:37
@DotPi I updated the answer considering QGIS 3.4.1. It is better to mention QGIS version in your question.
– ahmadhanb
Nov 13 '18 at 6:53
Updated Question. It works now.
– DotPi
Nov 13 '18 at 7:12
add a comment |
I am using QGIS v3.4.1 and I cannot see the parameter called 'Cleaning tool' inside the v.clean interface
– DotPi
Nov 13 '18 at 6:37
@DotPi I updated the answer considering QGIS 3.4.1. It is better to mention QGIS version in your question.
– ahmadhanb
Nov 13 '18 at 6:53
Updated Question. It works now.
– DotPi
Nov 13 '18 at 7:12
I am using QGIS v3.4.1 and I cannot see the parameter called 'Cleaning tool' inside the v.clean interface
– DotPi
Nov 13 '18 at 6:37
I am using QGIS v3.4.1 and I cannot see the parameter called 'Cleaning tool' inside the v.clean interface
– DotPi
Nov 13 '18 at 6:37
@DotPi I updated the answer considering QGIS 3.4.1. It is better to mention QGIS version in your question.
– ahmadhanb
Nov 13 '18 at 6:53
@DotPi I updated the answer considering QGIS 3.4.1. It is better to mention QGIS version in your question.
– ahmadhanb
Nov 13 '18 at 6:53
Updated Question. It works now.
– DotPi
Nov 13 '18 at 7:12
Updated Question. It works now.
– DotPi
Nov 13 '18 at 7:12
add a comment |
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