Questions tagged [segment]
The segment tag has no usage guidance.
35
questions
1
vote
1
answer
60
views
How to use ogr2ogr -segmentize on a CSV file?
Here each line only has two nodes.
$ cat file.csv
WKT,ID,Name
"LINESTRING (-900 -1450,-900 100)",0,900W
"LINESTRING (-800 -1450,-800 100)",1,800W
How can I use ogr2ogr -segmentize ...
- 418
5
votes
3
answers
204
views
Segmentation of a network at branches from one complex boundary polygon
If I have the polygon defining boundaries of a river network, is there any way to directly segment the tributaries out using geospatial data analysis?
To elaborate, I am looking for a workflow more ...
- 163
0
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0
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33
views
Deleting all adjacent small road lines perpendicular to buffer using ArcGIS Pro
I am using ArcGIS Pro 3.1.2. I clipped all road lines inside a buffer. However, some small adjacent road segments are within the network.
Is there a tool or option that can get rid of this small part ...
- 321
2
votes
1
answer
42
views
Rectangular Clipped Segments
I am trying to create four separate clipped quadrants to my full .laz file (See Figure 01). I was able to clip one quadrant of (number 03 in figure 01), but am struggling to identify points to clip ...
- 23
0
votes
0
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71
views
Google Earth Engine SNIC segmentation reproject method
I am trying to do SNIC segmentation and then classification in Google Earth engine. My problem is that every time I change the zoom scale, it gives me a new result with a recalculation. For this I ...
- 13
0
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0
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31
views
One set of training samples for multiple segmentation rasters
Can I create one set of training samples (~800 training polygons) that can be used for many segmented rasters if the training sample polygon match across segmented raster (6-8 rasters total), or is ...
- 1
3
votes
2
answers
138
views
Measuring border segment length while creating a polygon in QGIS
I am recreating historic (1770s) land parcels for an area of a town based on their description in written deeds. This will be a series of intersecting polygons when I am finished, with many sharing ...
- 31
1
vote
1
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125
views
Split lines with intersections
I basically want to divide this main line (LRS187) into several segments divided by points (LRSEvents187). I tried to use 'Split Lines at Points' tool from SAGA but got nowhere. I tried making ...
- 11
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vote
0
answers
144
views
Split a region into segments based on majority points
Having many points that belong to different classes (in the example below 9), I would like to split the region into multiple segments. In QGIS, the majority/minority tool does the job. In Python, ...
- 149
0
votes
1
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771
views
Splitting specific polygons in a multipolygon in R
I am just starting to learn and apply the sf package for a spatial analytical problem.
I would like to divide the set of polygons (in the multipolygon geometry) into two groups-1 and 2 (randomly) ...
- 1
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vote
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59
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How can I get the mean values at intervals of 30 m in QGIS?
I synchronized the GPS point and PM concentration. And I want to get the mean value every 30m. What should I do?
I snapped the points to path
And I want to the results like this picture.
- 11
2
votes
1
answer
119
views
Segmentizing MultiLineString by distance using PyQGIS
I want to segmentize a MultiLineString layer by a given maximum distance. Result shall be parts of the input linestring with this maximum length. I am using QGIS 3.16 and want a pure PyQGIS solution.
...
- 34.9k
4
votes
1
answer
191
views
Changing number of default segments in buffer tool in QGIS
The "Buffer" tool of QGIS by default uses five segments per quarter circle. I want to change this default value to e.g. 50, so I don't have to select and replace the current value every time ...
- 16.5k
4
votes
2
answers
185
views
Determining the centre of a larger number of arc segments using QGIS
I am using QGIS.
I have a larger data set of circles (different radii) that partially overlap and are intersected with each other (see screenshot below).
I am now looking for a way to determine the ...
- 41
0
votes
1
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67
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Combining small OpenStreetMap way segments with the same names as one single way segment [duplicate]
I am working on a student project using Python. I have extracted way segments from openstreetmap.org using https://overpass-turbo.eu/. I realized at times that there are multiple way segments of the ...
