Questions tagged [st-split]
The st-split tag has no usage guidance.
9
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6
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Splitting lines by multiple polygons, taking length of particular segment, using PostGIS
I have a table of 100k+ non-overlapping POLYGON features, and a table of 50k+ simple LINESTRING features (each line has only 2 vertices). The below is a common arrangement of these features on a map, ...
- 1,497
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1
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31
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Split Polygon in one layer based on boundaries in second layer
I have two different polygon layers, 1 and 2. Now i want to split polygons in layer 1 taking reference from polygons in layer 2. Is it possible in qgis???? Please find attached image as reference ...
- 269
2
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1
answer
37
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Intersecting Polygon by a Gridded Polygon returns unexpected result
I have a regular polygon grid (grid) and irregular polygons (block). You can download the data here: https://we.tl/t-BczpR2K2lw
I want to intersect the orange polygons (block) by the regular polygon ...
- 3,091
4
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1
answer
181
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PostGIS order intersections of line and polygon
I have a polygon and a line that goes through it. That line might exit my polygon and enter it again at a later point.
So now I'd like to have a relative position inside my line, where those segments ...
- 919
2
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2
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240
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Split lines by a polygon - Why are "internal" lines split in parts using sf/st_split
The context: I have a border and routes followed by vehicles. I want to
decompose the routes, cutting them everytime they cross a border, and
for each part, know what are the distances performed.
...
- 795
1
vote
2
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331
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Removing longest segment of linestring and rejoining segments
I am trying to remove the segment that has the longest length from a linestring and join the two group of segments that remain by the shortest segment between them.
That was easy, using ST_Difference (...
- 181
1
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0
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157
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ST_Split with ST_Dump returns multipart Linestring with additional Splits
I am trying to split a lingstring using another linestring as my blade. The line to be cut crosses over itself at different locations. (to_be_cut is linestring, not multilinestring)
My query ...
- 161
4
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1
answer
161
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Splitting self-overlapping lines with points using PostGIS
I have a line geometry that partially overlaps itself (think about a line going A -> B -> C -> B -> D) and a set of points (not on the line but close to it) that I want to use to split the line in ...
- 41
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2
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Splitting lines into basic segments at vertices with PostGIS?
I have a MultiLineString table in PostgreSQL and I am trying to obtain a table with all the segments obtained from those lines if we split them at their vertices.
I have found this simple example, ...
- 1,126