All Questions
122
questions
0
votes
0
answers
78
views
Buffer around outer edge of polygon
I'm working in QGIS. I have a multipolygon layer and I want to create a 1.5 mile buffer around the outer edge of each polygon.
The output of the Buffer tool (set to 1.5 miles) doesn't quite reach 1.5 ...
- 649
0
votes
0
answers
57
views
Area of intersection between two polygons: TopologyException: Input geom 0 is invalid
I am trying to compute the area of the intersection of two polygons as follows:
inter = geomap_ilot.sjoin(df_final_quartiers_arrond)
def f(frame):
"""A function to calculate ...
- 485
6
votes
3
answers
372
views
Labeling count points within dissolved buffers in QGIS
I am using the following expression to visualize with a buffer, the nearest neighbors at a given distance:
case when
distance(
$geometry,
array_get(
overlay_nearest(
layer:=@layer,
...
- 2,419
0
votes
2
answers
43
views
Creating buffer region using ArcMap
I'm trying to exclude a distance of 2km from several built-up area/settlements as an exclusion area.
A little background, I extracted the built-up area from a land use cover map and converted it to ...
- 5
0
votes
0
answers
44
views
Buffer output issue QGIS
I'm using QGIS 3.18 version. I tried to use the buffer tool with the centerline (provided for a sample) of the road.
I found overlapping of buffer polygons and some unusual shapes of polygons too. I ...
1
vote
1
answer
341
views
Changing turf.js buffered polygon corners to sharp corners in Leaflet?
I'm using Turf JS to make a polygon bigger with 10 meters:
var buffered = turf.buffer(polyGeoJSON, 10, { units: 'meters' });
and after, I'm adding it to the map
var outerBuff = L.geoJSON(buffered , {
...
- 255
1
vote
0
answers
68
views
Adding overlapping routes when there is no overlapping route using buffer and union
I am trying to do something to do with routes, Let's say I have 3 routes rt1 and rt2 are overlapping routes that share some length but r3 does not overlap with either of them. How would I just add the ...
- 13
0
votes
0
answers
61
views
SqlGeometry STBuffer producing abnormal polygon shape
I am currently not able to figure out what is causing the abnormal shape when drawing a polygon onto the map as shown below.
Instead of being a complete polygon, there seems to be a triangle in the ...
- 101
0
votes
1
answer
54
views
Creating a series of buffers along a stream polygon at set intervals in ArcGIS Pro
I have a set of streamlines and a polygon layer showing the extents of water outwards from those lines. I will be buffering out 50-ft from the polygon layer to gather information about land-use in the ...
- 9
2
votes
1
answer
147
views
How to divide polygon into equal length but irregular widths based on depth and coastline
I've been having issues with dividing my polygon (coastline to 300ft depth contour around Oahu) on ArcGIS Pro 3.1.0. I need to create 100 equal-length polygons along the coastline, but the other side ...
0
votes
1
answer
221
views
Difference between df.geometry.buffer and df.geometry.scale in plain english
I am still struggling to grasp the difference between df.geometry.buffer and df.geometry.scale.
They can both be used to increase the size of a polygon but how are they different?
While in df.geometry....
- 485
0
votes
1
answer
320
views
ArcGIS Pro Split 'multiple buffer ring' output into separate polygons based on centroids
I have created multiple buffer rings around 10 separate points, every 20 m for 320 m. I ran this tool with the dissolve option off.
The output is creating one polygon for every ring distance (ie every ...
- 3
2
votes
2
answers
63
views
Saving information which county is included by which buffer in QGIS
I created buffers around the centroids of US counties and now I would like to save the information on which counties are included in the buffer.
One example: A 100 km buffer around the centroid of the ...
- 19
1
vote
2
answers
135
views
Buffer 200 degrees (without north, northeast and -west) for polygons in QGIS
For shading analysis I buffer my objects (buildings, trees, etc. They are polygons) with a 40 m buffer.
Since in the northern hemispehre the sun is never shinning from the north I thought about a ...
- 677
0
votes
0
answers
74
views
Looking for QGIS equivalent of ArcGIS tool for buffering without polygons overlapping regions of neighboring boundaries
Is there a way to create buffers around a group of polygons (vector file) in QGIS where the overlapping buffer parts are not in the result? Please see picture example:
I've seen a question asked ...
- 1,509