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Geographic Information Systems

Questions tagged [splitting]

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Division or partition of geometric features

597 questions
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3 votes
2 answers
184 views

I have cases where one polygon is on top of another. I want to press the smaller polygon into the larger one so that the surface underneath the smaller polygon disappears, and the smaller polygon ...
Frodo's user avatar
  • 2,507
2 votes
2 answers
219 views

The question I QGIS, you can split polygons with lines using Split with lines algorithm. I want to do this in Geometry genrator, using QGIS expressions. However, there is no expression/function ...
Babel's user avatar
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0 votes
1 answer
58 views

I have a grid of polygons and a larger polygon (which is really just a border). The overlapping polygon intersects the smaller polygon grid and divides some cells (see picture). I am trying to add an ...
Tony C's user avatar
  • 101
1 vote
1 answer
127 views

I have created a script in FME that processes some point data. I am currently stuck on how to split the line at a point.
SAM's user avatar
  • 39
2 votes
0 answers
65 views

I have a shape file containing polylines representing roads. Each polyline represents one section of road, and each has a unique ID ("Asset_Id"). I also have a CSV file containing a list of ...
Shev's user avatar
  • 63
1 vote
0 answers
88 views

I'm trying to segment road geometries using Turf.js’s lineSplit based on Nodes placed on the LineString. It works well for normal roads, but when the geometry is self-intersecting, like a P-shaped ...
Sinatra's user avatar
  • 11
0 votes
0 answers
36 views

I want to visualize a bus network where several lines partially overlap. To do so, starting with my master file containing one feature per bus line, each with its unique identifier (line number), I ...
Jon's user avatar
  • 23
3 votes
0 answers
132 views

I have a "parcel boundary" layer that contains a single polygon representing a parcel. I also have an "access lines" layer that contains many line features representing roads, all ...
Brightside's user avatar
  • 164
1 vote
0 answers
124 views

I need to know how to cut a line string polygon (two points) to a specific length. I was trying to move one of the points, but it took too long to move before checking the distance.
Ismael Torrejón Carrasco's user avatar
  • 11
4 votes
3 answers
377 views

I have 10s of thousands of polygons, some of which have donuts/inner rings which a third party software can't handle. The polygons range in size with the donut/inner rings varying from 1m2 to 200m2. ...
Duck's user avatar
  • 61
1 vote
2 answers
157 views

I am in QGIS, version Bratislava. I have a big, detailed layer of polygons that represents Italy. The layer is composed of several polygons, because it includes Sardinia, Sicily, and all the tiny ...
Adriano di Lauro's user avatar
  • 113
1 vote
0 answers
54 views

I have a vector layer of around 1100 Linestring tracks that represent different routes taken over the last few years around a specific area. From this I want to identify the most popular route ...
rollingnowhere's user avatar
  • 31
3 votes
0 answers
93 views

As I'm already aware, QGIS 3.30+ has a built-in "Split with Lines" tool. However, a variant specifically tailored for the SQL Virtual Layer system, particularly one built around the ST_Split(...
Routhwick's user avatar
  • 111
0 votes
1 answer
490 views

Is there a method for splitting polygons based on intersecting lines using sf in R? I've tried using the lwgeom::st_split(polygons, lines) but this returns a single multi-polygon that then needs to ...
Brian Fisher's user avatar
  • 1,197
2 votes
2 answers
171 views

I am trying to clip a valley floor polygon into reaches, and wondering if there is a automated method, or if I'm stuck hand drawing the splits. I have a polygon layer representing the valley floor, ...
Brian Fisher's user avatar
  • 1,197

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