Questions tagged [buffer]

A region enclosing a point, line, or polygon at a specified distance.

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Multiplying binary rasters

I have 2 binary rasters: one of them contains buffer zones around evacuation roads and the other one contains buffer zones around rivers. I want to find out the areas located near the evacuation roads ...
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Random buffering in QGIS

I work with QGIS 3.22 and I have a point layer that I want to display as a WMS layer where the actual location of those points would be concealed for security reasons. I have thought that there may be ...
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How to iterate through polygons, create buffer and intersect with point features in ArcMap [closed]

I am new to ArcMap. I have two map layers: Map 1 with more than 500 mini polygons and Map 2 with more than 2000 points. My goal is to extract the points falling within 50km from the border of each ...
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Creating buffers around points with lines as border

I'm trying to create buffers with a 10 meter radius around points (springs). The problem is that the buffer should not cross lines (rivers) and not overlap each other. This should be done automatic ...
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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 ...
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Buffer Polygons without overlapping regions of neighbouring boundaries in ArcGIS Pro

I'm struggling with a simple buffer which turns out to be way more difficult than I thought. I just want to buffer a polygon shapefile which has many neighbouring objects (on the left picture the ...
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2 votes
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Randomly sample points within polygons

I am working in QGIS 3.24.0. I have 200 vector layers in the form of circular buffers (same size, different extent) and a single layer of points (n=1,000 or so) contained within those buffers. 2 of ...
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Extraction of time series simultaneously on different radius bufferpoint on Google Earth Engine

I have this code that extracts the monthly time series of soil moisture, on radius defined by the buffer function: function bufferPoints(radius, bounds) { return function(pt) { pt = ee.Feature(...
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Calculating the joint area of two circles centered by two coordinates with 1 kilometer radius

The coordinates are (116.437017,39.91525) and (116.437591,39.91548) for example in Gaode Map (https://lbs.amap.com/tools/picker). I want to draw two circles using Point(lon, lat).buffer() in shapely ...
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Artifacts in buffer

After performing some basic vector operations on an OSM street-network I have artifacts in a number of locations. import numpy as np import pandas as pd import geopandas as gpd from osgeo import gdal, ...
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gBuffer filling polygon holes

I am working on a large polygon containing multiple polygons, which requires me to set a buffer in order to perform other analyses. I used R to do the buffer, for example, a -> gBuffer(b, byid = T, ...
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Extract multiple raster samples by input vector layer

I am working in QGIS 3.24.0. I am working on a project using the NLCD raster for the contiguous USA. I need to extract 208 circular buffers (10km radius) and have them each saved as a separate raster ...
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Enlarging gBuffer width changes polygon shape

I am having some issues with spTransform and the gBuffer function. I basically have a polygon that I want to buffer with gBuffer (not with st_buffer for other reasons). For some reason the shapefiles ...
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QGIS Buffer tool: Why do buffers of points not show up?

I've got a point layer and I want to have a very simple buffer around each point. I have been playing around with different options and all worked somehow except for a flat end cap style. But why is ...
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What is the units of distance parameter of geopandas geoseries buffer?

I have using buffer to create points and a polygon geometry for a spatial join operation. However, it is unclear what the unit of distance is? https://geopandas.org/en/stable/docs/reference/api/...
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Buffering bathymetry point datasets in ArcGIS Pro

I'm using ArcGIS Pro. I have two separate bathymetry datasets covering the same extent (mostly). The 5m dataset covers more of the nearshore area, whereas the 10m covers more of the deep ocean. One is ...
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Buffering polygons with Oracle Spatial 11 vs. 19

Does anyone have special knowledge about Oracle Spatial? I buffered polygons in Oracle-11 Database by making them slightly smaller (-50cm). The geometries are then delivered via a WFS as GML. With ...
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Find the distribution of nlcd categories within polygons

I am new to QGIS. I am trying to find out the distribution of NLCD bins within the buffered areas. The buffered areas is a vector layer, while the other is the NLCD raster (downloaded from MLRC). ...
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4 votes
1 answer
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QGIS: Min & max buffer to cover features in another layer

I'm working with buildings in QGIS (vector polygons) and have two layers - call them a "source" building and multiple "sink" buildings (in second layer). How would I go about ...
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1 answer
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Create fixed width and length polygon buffer from endpoints of polygon in QGIS

Is there a way to generate a polygonal buffer on the end of an existing polygon in QGIS? The red polygon was added using MS Paint as an example of what I would like to achieve. Ideally, the red ...
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how to test if linear exists with a buffer with ArcPy

I have a layer with several linear that I want to integrate into a database. But before integrating it, I have to test if the linear already exists or not. There is a lot of linear in the database so ...
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1 answer
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Looking for QGIS processing script equivalent of ST_Buffer [closed]

I have a shapefile layer containing road data and some of the data has entries for both carriageways, the data only has a road name so no way to distinguish between them. I've created a script that ...
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8 votes
2 answers
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Rotating polygons to follow the curve (line) in 90 degree in QGIS

I have created points on the line with 60m distance. Then I've made square buffers to these points. But they all stand straight. Is it possible somehow to rotate them so they follow the line curves? ...
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Drawing buffer zones in React-Leaflet

I am working with a Leaflet in react.js and using react-leaflet-draw. I can't draw a buffer on shapes drawn by react-leaflet-draw. Just like a “leaflet-buffer”.
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MapServer : background buffer around labels ( GEOMTRANSFORM 'labelpoly' )

I'm struggling on MapServer trying to create better and smoother background buffer around labels using GEOMTRANSFORM 'labelpoly' function documented here https://mapserver.gis.umn.edu/mapfile/...
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How to assign a coordinate reference system to x (buffer) datasets of x iterations in a for loop - R

My aims are 1) to create different buffer sizes around three points via a for loop, 2) to assign a coordinate system to each buffer for each iteration, and 3) to store each buffer in a list ...
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5 votes
1 answer
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Generating single sided buffers on the same side of lines

I have a line and a point layers and trying to find points 100m to the left of each line. The image below shows the single-sided buffer result. As can clearly be seen, one of the buffers is generated ...
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3 votes
2 answers
231 views

Buffer with no overlap

I have a GeoDataFrame of a (tiny) street network and want to buffer with no overlap. Thus far I have: #- get the stuff rd = gpd.read_file('./data/roads-cput_proj.geojson') rd.set_crs(epsg=32734, ...
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1 answer
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How to count features within a radius distance?

I use QGIS and I have building polygons like this: and I would like to calculate the number of polygons within a certain radius (100m for example) for each building to evaluate how dense is the area ...
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5 votes
4 answers
126 views

Buffer with PostGIS in the form of a pentagon or hexagon

In PostGIS, the ST_Buffer function allows a user to specify the segements per quadrant. However, only polygons with multiples of 4 (4, 8, 12, 16, etc) are allowed. How would you buffer a point to a ...
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Buffer problem (WGS84)

I have a point layer with the CRS WGS84, and if I put in other CRS, my points move to another world side. So, how could I do the buffer?
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3 answers
253 views

Calculate the distance between multiple points within a buffer in QGIS

I am very new to QGIS so please bear with me. Attached is an image of my QGIS project so far. In this, you have the pinkish points of the "Point_centers" layer and green points labeled "...
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5 votes
1 answer
143 views

How I can convert a point layer to a polygon layer in QGIS?

I need each point with its diameter to be a polygon
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1 vote
1 answer
79 views

Drawing a buffer zone on a specified point in R

I want to draw three buffer with 400mt, 800mt and 1200mt on specified map utilizing Open Street Map in R. library(OpenStreetMap) library(ggplot2) library(ggforce) lat1 <- 41.245; lat2 <- 41.26; ...
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Buffering roads leads to one big circle in QGIS

I am trying to create buffers around specific roads I am working with. I carried out the following steps: I highlighted all of the roads: I set out to create a buffer zone. The buffer was created. ...
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1 vote
1 answer
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Getting fine grained buffer in QGIS, similar to Translate function

I am using QGIS to compute a 30 km buffer around the borders of Poland with each neighboring country, preferably in both directions (but most importantly inwards, i.e. the border regions of Poland ...
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1 answer
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Creating buffers in ArcGIS Pro from points with variable accuracies

I have quadrilateral forest sample plots defined by GPS coordinates (and accompanying accuracies) taken at each plot corner. Using ArcGIS Pro, I inputted these coordinates as points and created ...
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2 votes
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Dynamic/interactive QGIS webapp [closed]

Is it possible to use QGIS + plugins to allow users to interact with maps in real time? For example, to allow users to control sliders and change buffer distances in real-time? It is easy enough to ...
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1 vote
1 answer
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QGIS Forms Filter - A distance filter expression to select features of a layer from current geometry

So, I have a layer with an attribute contact, and I want to join these features with feature of the current geometry - so it selects all whose distance is less than 150. I currently have a list of all ...
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ArcMap geoprocessing (merge and buffer) suddenly working very slowly

Typically, it works almost immediately but lately, anything I try to do (mainly merge or buffer) has begun to take an extremely long time to process. I've tried clearing the cache and limiting the ...
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How to create buffer of raster without original area in it in GEE

I am quite new in GEE but got really stuck! I want to create buffers around concession areas (raster) of 1km. I first transformed my vector dataset into raster, reclassified the values to 1 and ...
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1 vote
1 answer
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Non overlapping buffers/morphological tessellation for polygons in sf

I am trying to replicate the tessellation functionality from the momepy package (see source code here, lines 61 to 550) in R, using sf. This is basically a kind of mixture between a buffer and a ...
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1 vote
1 answer
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Copy only field between different vector layers

I have a line layer, which I have created a buffer polygon layer from to count points in close distance. I now want the output of that count back in my line layer. How do I get the column in my old ...
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3 votes
1 answer
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Creating multiple inner buffers in QGIS

How can I create a multiple inner (negative) buffer of a polygon layer that starts from an initial distance and repeats n times at a fixed distance? The result should be independent polygons. Ex: I ...
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3 votes
1 answer
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Gdalwarp clip with negative buffer

Is there any simple way to change this command: gdalwarp -tr 10 10 -cutline "shape.shp" -crop_to_cutline -of GTiff "S1A_IW_GRDH_1SDV_20200719T161950_20200719T162015_033526_03E28C_C720....
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Problem with overlapping buffers and tabulate area tool

I use the tabulate area tool. Unfortunately, this tool does not work properly with overlapping buffers (which are the majority in my shapefile), meaning that most of the buffers have a smaller area ...
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4 votes
1 answer
90 views

Strange line error when applying buffer in QGIS [duplicate]

I want to only select coastal cities among Cities Over 300K(UN data). So I downloaded open-source coastline shapefiles online(GSHHS_c_L1 and GSHHS_c_L2), made them into lines, merged 2 lines, ...
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1 vote
1 answer
236 views

Сreating buffer in meters using GeoPandas

I want to use a built-in function buffer of GeoPandas. I want to create a buffer of 10 centimeters around the original geometry but buffer method take argument in degree, so what value do I need to ...
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1 answer
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Draw buffer circle over a map using Geoseries

buf_df = geodata.copy() buf_df['geometry'] = buf_df['geometry'].buffer(10) fig, ax = plt.subplots(figsize=(10,10)) tx_shapefile.plot(ax=ax, facecolor='Grey', edgecolor='k',alpha=1,linewidth=1,cmap=&...
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Convert unit of measurement for a buffer area

I have generated buffers around geocoded points on a map. The shape areas for buffers are clearly different than the shape areas generated when projecting polygons (such as tracts, CDPs, or counties). ...
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