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Taras ♦
Taras ♦
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Extract Extracting borders from country polygons in QGIS

Extract Extracting borders from country polygons in QGIS

I'm trying to convert a polygon GeoJSON of countries into a line layer that contains only the borders. It should not contain the edges of the polygons that border the ocean (in my polygon dataset, nothing).

How can I in QGIS 3.8 do that? Basically, "give me the linestring of this polygon data, but only where there is a polygon on both sides of it".

I've checked similar answers and they don't cover this case. Most importantly, I actually want the data, not just set the display fill style to none.

Extract borders from country polygons

I'm trying to convert a polygon GeoJSON of countries into a line layer that contains only the borders. It should not contain the edges of the polygons that border the ocean (in my polygon dataset, nothing).

How can I in QGIS 3.8 do that? Basically, "give me the linestring of this polygon data, but only where there is a polygon on both sides of it".

I've checked similar answers and they don't cover this case. Most importantly, I actually want the data, not just set the display fill style to none.

Extracting borders from country polygons in QGIS

I'm trying to convert a polygon GeoJSON of countries into a line layer that contains only the borders. It should not contain the edges of the polygons that border the ocean (in my polygon dataset, nothing).

How can I in QGIS 3.8 do that? Basically, "give me the linestring of this polygon data, but only where there is a polygon on both sides of it".

I've checked similar answers and they don't cover this case. Most importantly, I actually want the data, not just set the display fill style to none.

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Vince
Vince
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extract Extract borders from country polygons

I'm trying to convert a polygon geojsonGeoJSON of countries into a line layer that contains only the borders. It should not contain the edges of the polygons that border the ocean (in my polygon dataset, nothing).

How can I in QGIS 3.8 do that? Basically, "give me the linestring of this polygon data, but only where there is a polygon on both sides of it".

I've checked similar answers and they don't cover this case. Most importantly, I actually want the data, not just set the display fill style to none.

extract borders from country polygons

I'm trying to convert a polygon geojson of countries into a line layer that contains only the borders. It should not contain the edges of the polygons that border the ocean (in my polygon dataset, nothing).

How can I in QGIS 3.8 do that? Basically, "give me the linestring of this polygon data, but only where there is a polygon on both sides of it".

I've checked similar answers and they don't cover this case. Most importantly, I actually want the data, not just set the display fill style to none.

Extract borders from country polygons

I'm trying to convert a polygon GeoJSON of countries into a line layer that contains only the borders. It should not contain the edges of the polygons that border the ocean (in my polygon dataset, nothing).

How can I in QGIS 3.8 do that? Basically, "give me the linestring of this polygon data, but only where there is a polygon on both sides of it".

I've checked similar answers and they don't cover this case. Most importantly, I actually want the data, not just set the display fill style to none.

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Tom
Tom
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extract borders from country polygons

I'm trying to convert a polygon geojson of countries into a line layer that contains only the borders. It should not contain the edges of the polygons that border the ocean (in my polygon dataset, nothing).

How can I in QGIS 3.8 do that? Basically, "give me the linestring of this polygon data, but only where there is a polygon on both sides of it".

I've checked similar answers and they don't cover this case. Most importantly, I actually want the data, not just set the display fill style to none.