Questions tagged [buffer]
A region enclosing a point, line, or polygon at a specified distance.
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Buffering GeoJSON file using Python?
I'm trying to perform a simple buffer on GeoJSON file using Python script. I am able to do it on a shapefile using Python script and on GeoJSON using QGIS fix distance buffer tool but I can't figure ...
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Create a buffer with a pre-defined area?
I have a road (line) system and need to create a polygon from it to show the right-of-way area. The right-of-way area is calculated in the field from taking measurements from the road centreline. From ...
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How to invert a Buffer(get the inside of a ring buffer)?
I have a line layer of a road network around which I create a buffer zone of 1000 m with Analysis Tools>Proximity>Buffer. But I am
interested in the areas outside the buffer zone, and not the buffer ...
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Buffering with physical barrier using ArcGIS Desktop?
I don't think it is possible, but I'm looking for a way to stop my buffer at a certain physical barrier.
For example, I have point near a river and I'm creating a buffer around my point that is ...
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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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Partially processing a catalog with an extent in lidR
I am using lidR to create a DEM of a very large area (over 1 million hectares). I have already processed a portion of this area.
I would like to be able to read the entire LAScatalog so that the ...
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Buffer polyline to kilometres in custom projection in QGIS, Python, R
I have a map containing polyline squiggles all over the world (shown below). I need to buffer these lines by 50 km either side, resulting in polygons.
I have reprojected my data to this custom ...
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Create polygons from location other than centroid (Obscuring specific locations)
Looking to get some feedback on tools or methodology one might use to denote a sensitive area without disclosing the specific location of a feature. For instance, how best to make a buffer that's not ...
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Creating polygon buffer from line
I have connected a series of points into a line in ArcMap 10 with the Points to Line tool in the ArcToolbox.
The line is, of course, in its own layer, and I added a 5-meter buffer around the line. It ...
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How to Buffer with intersections in QGIS
I am buffering a layer of facilities (points). I will then use the buffer to clip and intersect another layer, containing resources.
I want to answer the question, how much of the resource lies ...
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Can we create 3D buffers around point data in QGIS?
I have multiple point data with lat, long, and elevation.
I want to create a 3D buffer on one set of points and check for intersection another set of points.
I am using Qgs2threejs for visualization.
...
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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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Using GeoPandas buffer function to get buffer zones in kilometers
I am having trouble with using GeoDataFrame.buffer function. That is probably because of my lack of understanding crs.
Here is the case:
I have events dataset (points longs & lats) and locations ...
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Geometry buffer updating with ogr2ogr
I am trying to modify a dataset by replacing the geometry of each feature by its buffer. I try to do it directly, in update mode (not very secure I know). Here is what I tried:
ogr2ogr -update test....
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Creating regular point layer within several buffers using QGIS?
I have several buffers distributed along a whole country (therefore, the distances between them is very high). These buffers are represented in the same layer/shp.
I want to create a regular point ...
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Creating square buffer in qgis
How can I create a buffer with square ends along a line segment in qgis?
I've buffered lines using v.buffer in the GRASS plugin, but the -c option for square ends is not exposed in that interface.
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Surface covered by buffers in QGIS
In QGIS, I have plotted buffers around points. I would like to calculate the area which falls under buffers without over counting due to buffer overlaps.
Is there a quick and easy way to do this?
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Best way to get Convex Hull/Boundary of millions of points
I've been trying to do some point analysis on some xyz data, I'm at the point where I've decided it is best to produce a boundary of my xyz files and put this with the metadata for each survey.
Now ...
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Avoid losing overlapping areas when buffering line with Python
LineString is the path of the transport on the field with attached equipment. Is it possible to use GeoPandas or third-party Python libraries to find overlapping areas when buffering a path line to a ...
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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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Creating circle-like area that encompasses original polygon
I'm starting with a caveat - I'm very new to this. I'm also using spectral tools in MS SQL Server, which probably isn't the best way either.
I'm attempting to make a polygon that represents an area ...
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Buffering points in QGIS, and dissolving to make a single feature for each buffer that touches
I am trying to buffer points then dissolve to a multipart feature for each, but keeping all associated attributes of one of the buffered points (any one). GDAL gives me the following error with GDAL ...
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Which buildings have access to nature where more than 50% of the nature area is closer than 3km?
I have 1) a file with all the residential buildings in a small municipality and 2) a file with all the surrounding green areas.
I'm having a hard time solving this because the residential buildings ...
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How to use spatialite SQL functions in GDAL/OGR
I would like to create one-sided buffer geometries around linestrings. I found this ST_SingleSidedBuffer SpatialLite function that I would like to use in my Python script.
When I run the function ...
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Adding processing buffer output to QgsMapLayerRegistry (argument 1 has unexpected type 'dict')
I'm writing a qgis plugin which needs a fixed-distance-buffer algorithm and must add the buffer result to the map layers of the software.
I have the following code:
# these are my import list
import ...
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postgis ST_Contains with ST_Buffer performance issues
I have a neighborhoods layer and a parcels layer. I want to find how many parcels are in each layer.
Initially, I used this query:
SELECT neighborhoods.name, COUNT(parcels_kcgis.geom) AS total
FROM ...
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Why does Buffering in QGIS fail with this error: Argument 1 has unexpected type 'NoneType'?
I get this error on both 2.10 & 2.12 on two different machines running Ubuntu 14.04 with Python 2.7.6.
When trying to run the fixed-distance buffer on a shapefile with polylines I get the ...
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QGIS equivalent of inline variable substitution in ArcGIS?
I am working through some analysis in QGIS and need to iterate through a layer of points and buffer each point and then export to a new layer. I want the new layer names to have the values from a ...
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Use ST_Buffer with a conditional distance based on an attribute
I am quite new to postgres/postgis and are still learning basic skills.
I have imported a pointlayer shapefile into my postgres database.
I need to make a buffer of varying radius around the points ...
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PostGIS Nearest Neighbour outside buffer
I am trying to find the 6 nearest neighbours to a point which are outside a defined buffer.
Basically I am comparing points of the same table and working with Mike Gleason's examples.
WITH subq AS ...
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Creating cluster of crashes using QGIS?
I have a shapefile with 52K points of road accidents, between 2007 and 2012.
Each accident has a severity index. I want show clusters of 5 accidents (at least), for each year, that have a severity ...
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Geodjango: Using Lat / Lon to Buffer from Point
I want to have a radius based distance search. To do this, I want to create a buffer around a point object so that I can filter objects that are inside this buffer, a method that I learned based on a ...
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How to extract values from intersection of different size buffers with raster?
I have a polygon shape with buffers. However, the buffers are of different size from 4m radius to 15m. In total I have 7 different buffers.
I have a landcover raster and I would like to extract ...
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FME remove polygon holes of under size ### sqft and chop the ends off
Quetion #1
I have a wokspace that takes the latest version of my data and creates buffers and then merges those to one polygon.
When 2 buffer polygons are near each other and close to create a hole. I ...
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Selecting points within 2 buffers?
I have 2 huge files of points (hundreds of thousands of points). I need to determine a way to loop through all the points in one file and find all the points in the second file that are only a ...
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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 ...
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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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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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Buffer algorithm doesn't work in a new script from template
I use QGIS 3.10.14 and I begin with PyQGIS.
When I tried to make a simple script which use the native buffer algorithm, the output layer came out exactly like the input layer, with the same polygons ...
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Creating a square buffer around a shapely polygon
I have a list of polygons in a shapefile that I transform into a geopandas dataframe:
polygons = gdp.read_file(polygon_file)
then I would like to create the smallest possible square buffer (in lat-...
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Multiple buffers to both sides of a line using ArcGIS
I am aiming to create multiple buffer zones to both sides of a line that have flat ends where the line ends (unlike 'rounded' edges of multiple ring buffers) and are not connected (each buffer zone to ...
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Buffering Points Directionally
I have about 10,000 points that I want to apply a partial circular buffer to based on an angle, from -30 to 135°.
A similar question for polygons seems to have been answered (How to create an ...
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ArcObjects Memory Leak with IWorkspaceEdit?
I have ArcGIS 10.1 installed.
I have created a function for copying all of the features from one shapefile to another using IFeatureBuffer, now every time the function when it is called, it takes ...
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Distance from waterways using SDC file?
I have an sdc file with water bodies, i.e. oceans-rivers-lakes. I want to combine it with a shapefile with the boundaries of countries all over the world and produce two measures: 1) The average ...
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Custom Shapely Cap style
I am currently using shapely and geopandas to parse through a shapefile containing lines to build a rail network.
I am using shapely to create a buffer to identify sections of track that cannot be ...
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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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Selecting only the first row of polygons around polygons
I am currently working on my thesis and after trying for a few days I decided to ask this questions since I guess I'm stuck. I'm working on ArcGIS PRO 2.7.0 with datasets obtained via Esri (online) ...
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How buffering works in GeoPandas?
I try to add a buffer on a set of lines via the buffer attribute of geopandas.
But by testing on a simple case (see code below) I realize that the size of the buffer is not kept according to the ...
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How to define voronoi polygon buffer extend in QGIS from layer extend
I'm using QGIS (2.8.1) Voronoi Polygons Algorithm and I would like to extrapolate them to a polygon layer extend. In order to do this, the tool opens a window asking me to enter a number or expression ...
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Creating 1-sided buffer that varies with slope in ArcMap?
I am a forester using ArcMap 10.5. I need to map the riparian management zone (RMZ) along a river that I have delineated using lines for each shoreline of the river. I have 2 foot contour interval ...
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