Questions tagged [buffer]

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

Filter by
Sorted by
Tagged with
0
votes
0answers
13 views

QGIS. Azimuthal Equidistant projection for a list of longtitudes and latitudes

I want to reproject a list of longtitudes and latitudes with Azimuthal Equidistant projection in QGIS. For the sake of accuracy, I need each the Azimuthal Equidistant projection of each point is ...
0
votes
0answers
26 views

Problems with buffer measures

I have a shapefile of points in Europe (EPSG:3035), with (in the attribute table) a radius length in km; I am trying to find a way to create a buffer (or a circular polygon) around each point and ...
1
vote
0answers
32 views

Why is my buffer not showing in QGIS 3.16.15?

I've recently tried to create a buffer around a dissolved vector polygon layer. Here's the vector polygon: When I tried to create a buffer, it seemed to be working fine. I could enter a distance ...
0
votes
1answer
29 views

Generate a time series for a buffer point on Google Earth Engine

I am trying to extract the time series of soil moisture by applying a 500 m radius buffer to the point defined by mapping the bufferPoints function over the FeatureCollection, using the following code:...
0
votes
0answers
36 views

Intersecting buffer with county polygon to find county population that lies outside buffer using ArcGIS Pro

I am using ArcGIS Pro. I have previously created single ring buffers around points, and intersected theses with census tracts and summarized in order to calculate the population within the buffer. I ...
1
vote
1answer
35 views

For loop to buffer shapefile at multiple distances, add each to the layers window, style & save to geopackage; PyQGIS

Can someone help me straighten this code out. I want to create three buffers, at 100, 250 and 500m respectively and add these to the contents table. I've tried creating a for loop but not having ...
3
votes
1answer
53 views

Appropriate distance and CRS

I want to use buffer function using miles or kilometers in Louisiana. I checked Changing unit of measure from degrees to meters in QGIS?. The original CRS is EPSG:4326 - WGS 84 - Geographic and the ...
0
votes
0answers
12 views

Choosing method to count Stores within concentric buffers using ArcGIS Pro

I have a list of stores, and I have created separate single ring concentric buffers that vary in size (I opted not to use the multiple ring feature). I want to count how many other stores are within ...
2
votes
1answer
41 views

Multiple Unions & Dissolve for Buffers

I'm a new user of QGIS 3.10.4. I need to create contours on maps using buffer, union and dissolve functions in QGIS. The buffers will be from multiple points. Is there any way I can unionize and ...
0
votes
0answers
32 views

Create geoprocessing tool using ArcPy that buffers multiple inputs and then merges and dissolves them into one final output

I am trying to create a geoprocessing tool in ArcMap by way of Python that will accept multiple inputs (points, lines, and polygons) buffer them based on user input, and then take the results and ...
1
vote
1answer
33 views

Automatically update Buffer Layer

I have recently started working with QGIS. Quite new to this software. Anyway, my first task is to create contours from shapefiles using buffers, unions and dissolve functions. This shapefiles are ...
1
vote
1answer
51 views

Records density along river network [closed]

This is a quite a complicated problem for me. I'm working with bird records, trying to figure out the eventual density of river bird species along rivers. I've managed to create a layer of records of ...
3
votes
1answer
51 views

Deformed shapes after using wedge_buffer as Symbol layer in QGIS

I'm trying to display "field of view" cones on the map, using Geometry Generator as Symbol layer: wedge_buffer($geometry, dir, specs_angle, specs_distance/200000, 0) "dir" : ...
0
votes
1answer
41 views

Buffering like set to lat/lon degrees but layer is set to UTM reprojection - EPSG: 32611

I have two line and point features to buffer. I have reprojected to UTM EPSG: 32611 for both. Please, see screen capture showing the direct GeoPackage layer properties and not from the Layers window. ...
0
votes
0answers
28 views

Determining percent habitat (raster data) present within buffer using ArcMap

I am using ArcMap 10.8.1. I am worried this might be a basic question but I am new to ArcGIS. I have a raster file of all the habitat distribution data for the region I am studying. I also have about ...
1
vote
0answers
21 views

Layer and Buffer Creator - custom method

I am trying to make a script function that creates layers for further use to buffer the layer. My code doesn't give me any error but neither any buffered layer. My code is below: import arcpy from ...
2
votes
2answers
89 views

Buffer around lines with varying width in between

My questions is about creating an elongated buffer around various lines and these buffers should run right in the middle of two parallel lines. The problem is that the lines do not have an equal width ...
6
votes
1answer
87 views

Single sided buffer QGIS strange behaviour

I'm creating a single sided buffer in QGIS based on line segments. In the project the line segments represent river shore lines. Therefore, they are often of meandering shape. I used the algorithms '...
1
vote
1answer
44 views

Creating a buffer for each row in a shapefile

My input is a point shapefile with more than 500 features. I need to create separate shapefiles with a buffer of 15 kilometers around each feature (so the output will be more than 500 shapefiles with ...
0
votes
0answers
21 views

Batch buffer loop using ArcPy

How can I create a nested conditional that allow the user to choose between buffering for an individual file or for a list of files and then carry out the buffer according to the user's choice?  ...
1
vote
0answers
39 views

Buffer not working in GeoPandas

This seems pretty simple but I can't seem to create a buffer around a GeoDataFrame. I'm making this buffer so that it will be the extent of the axes instead of the original layer. This is to make the ...
0
votes
0answers
44 views

Geoprocessing buffer "." files are not supported for this algorithm

I am trying to buffer a layer which worked earlier. I recieve, The "." files are not supported for this algorithm Other tools give me the same error along with Fix Geometries, Reproject ...
1
vote
1answer
41 views

Geopandas buffering successfully created buffers but deleted all attribute data

I am trying to use Python and GeoPandas to create variable distance buffers for a polygons shapefile I have. I brought this shapefile into python using GeoPandas. One of the columns of the ...
0
votes
0answers
35 views

Create multi ring buffer in QGIS that includes 0 distance polygon as well

I am trying to take a polygons shapefile with hundreds of polygons and draw multi ring buffers around the borders of each polygon, with 25 rings at distance intervals of 30 meters. Ok fine. This is ...
5
votes
3answers
313 views

How to create variable distance buffers around polygons in Python

I have a shapefile of polygons and I would like to create buffers around the edges of each polygon. However, rather than use a single buffer distance for all of the polygons, I am trying to find a way ...
1
vote
0answers
32 views

QGIS buffer does not work on few features in the same multiline layer

I am trying to use QGIS buffer to do buffering around a MultiLine layer. While the command generally works well, I can not get a buffer for few features in the same layer. I wonder what causes the ...
1
vote
1answer
38 views

Finding parcels directly across street using ArcMap

I have a set of polygons like this: The broad goal is to find how much of each polygon's perimeter is bordered by each of the other polygons, including polygons across the street. In other words, I ...
7
votes
1answer
112 views

Looking for QGIS equivalent of ArcGIS "Adaptive Smoothing" tool

I am trying to find a tool that is similar to "Adaptive Smoothing" (found on ArcGIS) on QGIS. What I am trying to do is eliminate narrow drainages (narrow corridors less than 6 m wide). This ...
0
votes
1answer
16 views

Creating buffer for only one part of feature (that borders another feature) using ArcGIS Pro

I'm using ArcGIS Pro, and I would like to create a buffer for a polygon, but only for the areas that are bordering another polygon feature. I am trying to create a 500m buffer into an oil palm ...
0
votes
1answer
25 views

Buffering spatialpoints and getting raster values from overlapping polygons

I have a spatial points representing eDNA sample. I have a raster file representing surface temperature (RST) I want to extract the surface temperature according to the eDNA sample. So, I decided to ...
0
votes
0answers
13 views

How to use 50% Areal Containment Method in ArcGIS Pro with 2010 Census data

I am new to GIS. I am trying to use something called the "50% Areal Containment Method" laid out by Mohai and Saha's 2006 paper. Basically, you create a buffer around a location, then ...
0
votes
0answers
10 views

gdal_proximity not working if -maxdist is GEO even if raster is projected

I have a boolean raster layer where 1 are cells with slope higher than 15 degrees, and 0 lower. If I run a gdal_proximity command like gdal_proximity input.tif output.tif -distunits GEO -maxdist 20, ...
0
votes
0answers
15 views

Buffer appears faulty using ArcMap ModelBuilder -

I have an automatic process in ModelBuilder, where I tell it to load some points through an Excel spreadsheet, make points in shapefiles and then make a buffer. The buffer parameters are as follows: ...
14
votes
2answers
481 views

Creating equally split buffers between points in QGIS

I want to create buffers for every health facility, but they end up overlapping. How can I create buffers that split equally between the distance of 2 health facilities? Example of the result wanted ...
5
votes
1answer
66 views

Creating Single sided buffer with Virtual layer in QGIS

I'm creating a layer with single sided buffers based on a line layer as virtual layer in QGIS with the following query: SELECT id, ST_SingleSidedBuffer(layer.geometry, layer.buffer_dist, layer....
0
votes
0answers
25 views

Buffer around lines with rules or expressions

I need to create buffers around a layer of lines that represent infrastructures and they are symbolized according to the type (roads, railway, waterway and electric cables). Is there any way to create ...
2
votes
0answers
41 views

Dynamic buffer regroup [duplicate]

I am using QGIS 3.16 and I want to create a dynamic buffer around a layer of points, so that every time I move some point the buffer also moves. I have succeed by duplicating the layer and then ...
1
vote
1answer
84 views

Sampling raster data around point set in QGIS

I have the following problem: I have a set of 27 "destinations" which I have selected manually and saved as a POINT layer. I have loaded several raster data layers into my project (with ...
1
vote
0answers
26 views

QGIS: Creating a point at a set distance up/downstream from another point (dams or obstructions) on a line object (river)

I have a data set where I have shapefiles for the watercourses in a drainage basin (line/linestring) and locations of dams and other obstructions along them (points). I would like to create a new ...
0
votes
0answers
25 views

Choosing projection in Germany and Switzerland for buffer in metres [duplicate]

I am using QGIS. Which projections / CRS are best to use for Switzerland and Germany, which I can use to buffer points and lines in metres rather than degrees?
0
votes
1answer
78 views

Choosing projection in Eastern Australia (NSW in particular) for buffer in metres

I am using QGIS. Which projections / CRS are best to use for Eastern Australia (NSW in particular), which I can use to buffer points and lines in metres rather than degrees?
2
votes
0answers
65 views

Listing lat/long coordinates of every point inside polygon or shapefile using QGIS

This is likely a beginner question but I've seen numerous posts on how to export the boundaries of a polygon as coordinates, but none on exporting the area of a polygon as coordinates. I am ultimately ...
2
votes
2answers
62 views

Cropping Voronoi polygons to specific distance from input points using QGIS

The Voronoi polygon algorithm propagates the polygons to the extent of the input layer (the points), which means some massive polygons. The majority of those massive polygons are nonsense data - we ...
0
votes
0answers
55 views

Multiple ring buffers to plot buildings by distance using Python

I have a district polygon, and a geodataframe of many buildings inside/outside of that district. I want to plot a function that shows the no. buildings as a function of distance from the district ...
1
vote
1answer
28 views

Earth Engine: Equidistant Buffer

Is there a way to make an equidistant buffer in Earth Engine for a globally-distributed set of geometries? For example, if there's a single point, we can provide an EPSG code of a corresponding ...
2
votes
1answer
93 views

Buffering GeoJSON with custom CRS in Leaflet

We are using a custom CRS for our map in order to use the British National Grid (EPSG:27700), however we have realised now that turf.buffer will not work with it, and appears to only work with Lat/...
1
vote
1answer
32 views

Assign point to closest polygon using sjoin

I have this situation in which I want to detect elements that ought to be contained on the boundary of a geometrical feature, but because of a variety of reason these point-wise objects can be "...
0
votes
0answers
14 views

How to find buffer radiuses for points in raster using Python

I want to do a neigbourhood analysis on raster data. I start with 2 things: i) a raster full of binary pixels (0's and 1's) and ii) several points with a certain 'sum value' (x = 7, 9, 12). I need to ...
0
votes
0answers
32 views

Want to calculate percent cover of land use categories within buffer areas?

I have point data and a land use map. I created 100m buffers around each point, I now want to calculate the percentage of cover represented by each land use category detected within the buffers. Would ...
0
votes
0answers
24 views

QGIS - clip buffered areas based on field value

I have several irregular, adjacent polygons which I first need to buffer, and then remove overlapping areas based on a field value. This is where I start: irregular polygons with the relevant field ...

1
2 3 4 5
26