Questions tagged [buffer]
A region enclosing a point, line, or polygon at a specified distance.
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QGIS 3.34.7 Single sided buffer changes - creating unexpected result
On QGIS 3.34.7 LTR, if you try to "Single sided buffer" a self closing line/full encircle (yellow line), with a value let's say 2 meters it will create a polygon inside and the edge where ...
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Buffer without overlaps in Python
I have a set of points with respective lat/long coordinates and each point has a given value associated with it (basically a field measurement). I would like to draw buffers of a given radius around ...
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Difference of circle buffer area to calculated area in QGIS
When I create a circular buffer around a point feature in QGIS 3.36.3-Maidenhead in EPSG:25832 of a 10 km radius with 1000 segments I get 313961275.193 m² as a result. I calculate the area by typing $...
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How to create one buffer around all the points using ogr2ogr?
I know how to make a buffer around each point,
$ ogr2ogr oom.csv a1.houses.csv -lco GEOMETRY=AS_WKT -dialect SQLITE -sql \
"SELECT ST_Buffer(GEOMETRY,.01,1) AS WKT FROM 'a1.houses'"
$ cat ...
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How to use ogr2ogr -clipdstsql?
This works (A),
$ ogrinfo -dialect SQLITE -sql
"SELECT ST_Buffer(ST_GeomFromText('POLYGON ((120.81313 24.18337 ...
Layer name: SELECT
OGRFeature(SELECT):0
POLYGON ((120.702569638856 24....
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Incorrect distances when measuring on QGIS, leading to buffers and density maps being much larger
I have created a boat traffic map on QGIS 3.36.2. Here, I have a vector layer containing different points connected to show the boat routes in the Andaman and Nicobar Islands in India. To ensure that ...
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Create 3D Cylinder in ArcGIS Pro
Is it possible to create a hollow 3D line feature in ArcGIS Pro? Something like a CAD "SOLIDEDIT" operation (I know next to nothing about CAD). I have a 3D Model of a large-diameter water ...
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Create distance buffer for virtual layer with categorized symbology QGIS 3.34
I want to create a virtual layer with a fixed buffer distance e.g. 1000 m from a buliding layer as input. The building layer contains information about its use in colum X of its attribute table. The ...
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"Buffering" raster category of raster layer in QGIS
In this raster with 300m resolution, I would like to increase the size of one category (1), creating an (approximately) 1km buffer increase. In other words: I would like to expand the borders of ...
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MULTI RING BUFFER VECTOR LAYER TO RASTER [closed]
I have a line vector file in qgis in which I run the multi-ring buffer command to divide the area into 200m zones from the river because I want to make a flood hazard map.
So I have a multi ring ...
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Buffering Streams based on adjacent slope using ArcGIS Pro
Elements:
Working with ArcGIS Pro 3.2.2
Line feature Class; NHD Stream Network
30mx30m raster; Slope calculated from DEM
I have a stream network that needs a variable buffer. The buffer width ...
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29
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QGIS - SQLite trigger to create buffer but with a non-overlaping clause
I'm using an SQLite trigger to add a buffer around another "POINT" layer based on entered values.
The buffers are being correctly added, but I'm encountering difficulty in preventing them ...
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Buffering with a barrier in ArcGIS Pro?
Not sure if this is possible but I'm looking to buffer streets (black lines) and I want the buffer to stop at the edge of these parcels (pink). Is this possible?
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Making buffer around crossing point on lines intersection in QGIS
I have two line layers A and B. I need to create a point at the intersection of these layers (which is not a science using "Line intersection").
Is there a possibility to draw a new one on ...
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Variable buffer at defined z slope to DEM in QGIS
I am trying to introduce some basic grading tools to my QGIS workflow that would otherwise have to be done in Civil3D by another person.
The basic idea is to take a polygon and buffer its vertices at ...
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Creating rings with buffer as polygon in QGIS [duplicate]
I need to draw circles with a buffer in one view. It will be an area around cities. I think it can be solved with a buffer or a cutout from the circle.
How can I do this?
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QGIS buffer concave at the front and rounded at the back
I have point layer, where points are grouped into groups - every feature has point_id and group_id. I want to generate around group of point buffer (for example 1500 meters) where front of points ...
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Seeing how far you can travel by road using QGIS [duplicate]
I have 2 layers, one with roads of an area, and other with shops of the area. What I want to do is to produce a map which could show the roads that are 100m within the shops. Note that what I want is ...
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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 ...
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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 ...
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How to infer the cordinate system dynamically from a wkt point, for create buffers?
What about if you have a multiple point of the world? How can infer the cordinate system dynamically from a place in Python, for example Mexico, Brazil, Chile, Canada, etc.?
The goal is to create a ...
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Pairwse Buffer using table of values
I'm trying to use a list of items that reference a distance to then use in a buffer. I'm having a hard time getting the table to work. I'm trying to create a drop down so they'd select Item1 and it ...
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Feature disappears when setting a buffer to a drawn feature with turf.js in OpenLayers
As shown in the code posted below, I am using turf.js to buffer a geometry.
The code below shows the steps I took to do the geometry buffering.
In the following step:
const asOLGeom = ...
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How to buffer a selected point in PyQGIS
I have a few random points that I generated within a polygon. I randomly selected one of the points and would like to buffer that point. In the case below, buffering will be applied to all points and ...
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Surfer Grid Contour - Inserting a buffer (river) to contours?
Using Surfer, I am making contours using a grid. I have a river running through my extent, that I need the contours to not cross over. How can I create this buffer? I can add a shapefile of the river ...
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Creating a one sided buffer in QGIS
I want a 3km buffer from a coastline but only on the seaward side. How would I accomplish this? I tried using difference but it didn't work
I initially got a geometry error which I fixed and still no ...
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Generating polygons with a target area from points using st_buffer
I have some point geometries which I want to turn into polygons using st_buffer. For each point I have a target area that the resulting polygon should have. Here's an example using R:
library(sf)
# ...
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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 ...
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Fixing Error 1 "side location conflict" using clip raster by mask layer
I use QGIS version 3.34.3 and Windows 10.
what I did so far:
I downloaded the data from COSMOS Europe here: https://doi.tereno.net/landingpage/doi/https%3A%2F%2Fapi.datacite.org%2Fdois%2F10.34731%...
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Generating centerline of a polygon feature, extending line feature - ArcGIS Pro
I am attempting to generate centerlines of polygon features using Polygon to Centerline in ArcGIS Pro. My goal in this effort is to create a straight line directly through the center of the feature. I ...
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