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Questions tagged [crossing]

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1answer
47 views

Layering up road and rail bridges from OpenStreetMap data in QGIS

I am using QGIS 3. I am creating a topographic map using OSM data downloaded as shapefiles. Obviously of I put the railways layer under the roads layer, all railways show as passing under roads. Or ...
1
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1answer
52 views

Calculating number of polygons needing to be crossed?

I have a bunch of polygons (parcels, green areas) and a bunch of wells (point, black triangles). How do I calculate the number of parcels I need to cross to get to the closest well to each parcel? ...
1
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3answers
79 views

ST_Contains when linestring crossing itself

I have a linestring which crosses itself, like in the picture below. There isn't any vertice at the crossing. It is a MultiLinestring, so when I want to get the startpoint, the endpoint, or the ...
0
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0answers
50 views

Geodesic line intersect Vincenty

I'm looking for a compiled 32 bit executable file that can compute the crossing of two lines given two lines defined by endpoints in latitude and longitude or state plane coordinates. A simple win ...
1
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1answer
25 views

Improving performance of shapely crosses

I am unsure if this is the fastest way to test if LineStrings cross each other. Is there a better method. for line_1, line_2, in itertools.combinations(lines, 2): crosses = line_1.crosses(line_2) ...
1
vote
1answer
55 views

How to add a column to “link” lines to polygons (Qgis)?

First i'll show you this image The green polygons are lots/land/property of different people of my city. The blue lines are the river banks of a river that crosses my city. The red lines are called ...
-2
votes
1answer
86 views

Count roads crossing borders?

I am looking for a way to count the number of roads crossing a national border in Europe. If possible, I would also like to decompose this result between regions (NUTS2 European regions). I am looking ...
10
votes
1answer
5k views

Intersecting lines to get crossings using Python with QGIS?

I have a set of lines representing bus lines. Some of the lines are overlapping and take the same roads. I am able to extract the nodes. However I am interested in extracting only crossings like ...