Questions tagged [buffer]

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

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1answer
124 views

Buffering without overlap using QGIS?

Goal: Buffering line features, where the buffer "ends" when an other buffer is about to overlap. Simply: Buffering without overlapping and creating a smooth border between the buffer. My first ...
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1answer
59 views

How do I obtain the distances of each point lying inside or outside buffers from the center of buffers?

My aim is to obtain the shortest distance between all the points overlain on a polygon and the center of buffers also overlain on the same polygon. I have done the following to illustrate this: ...
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1answer
148 views

Adding buffers around each city of user defined region using geopandas?

How do I obtain a buffer around each city on the overlay map of cities on the United States area? I have used the following piece of code to work this out but this does not work out it seems. I am ...
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1answer
42 views

Buffer all polygon feature classes inside geodatabase using ArcGIS 10.4

I have a geodatabase which contain a hundred of separated polygon feature classes. I want to create a same value buffer of all feature classes in same time. Each buffer must have a "dissolve" option. ...
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1answer
101 views

How to create buffers around points in ArcMap when there is a lack of OID

I want to create buffers around points in ArcMap. Using the Buffer (Analyst) tool, I indicated 100m buffers around my points of interest. I get the error: ERROR 000339: Input price, ads (v8) - ...
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0answers
104 views

QGIS - Label Rectangle/Buffer Overlapping Layer Above

When I apply a buffer or rectangle to my labels they show through the overlying layers. Is there any way to avoid this, i.e. arrange the label so it lies underneath the layers above? I'm assuming the ...
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1answer
51 views

Creating Buffer of specific area using QGIS?

I am trying to create a buffer which would include only the Mediterranean coast of Spain (excluding borders), running from the south western extremity close to Portugal, to the north eastern extremity ...
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3answers
437 views

Buffer around outline of polygon

I'm fairly new to QGIS, and I'm trying to create a buffer around the outline of Spain (including the coastline and boarders). When I do so, it buffers all the country from center to the edge, I just ...
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2answers
81 views

How can I buffer a mulipolygon only on the coastline?

How can I achieve something similar to the below image? (Apologies for the crudely drawn diagram) Either in QGIS or PostGIS. I have a series of station grounds and I want to retain the inner ...
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2answers
140 views

Difference between two polygons in Earth Engine

I have a reservoir and its buffer (see below). I want to do the difference between the 2 so that my buffer is just a contour around the polygon. I tried the 2 following scripts but cannot get the "...
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2answers
81 views

Using Variable Distance Buffer in ArcGIS Desktop?

I am new to ArcGIS. I have a point shape (Location of a wind power plant) and I want to create a buffer dependend on the diameter of the rotor. Can someone give me a hint how to do that?
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1answer
40 views

Analysing landuse data in a buffer layer

In my project I want to analyse the landuse around some points within a certain radius. So I created a buffer around my points but I have no idea how QGIS could probably tell me what different ...
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1answer
38 views

Buffer units in Geographic Information Systems

Why the unit of buffer is in meter? Or by default they are found as meters?
2
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1answer
365 views

Using MMQGIS to create accurate buffers?

I have read in several places that the best way to create a buffer around a vector point is using the MMQGIS plugin. I want to create buffers in London locations within a few metres of each other ...
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0answers
50 views

Achieving the opposite of the shortest_line() function in QGIS?

I currently use the Geometry Generator styling on a point layer to draw the intersection between protection buffers around tree points and another polygon (say a building footprint) using the ...
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1answer
51 views

QGIS draw custom polygon buffer [closed]

I'd like to create custom buffers in QGIS. Each buffer will surround a point. The buffers don't overlap. And each buffer has to have two constants: There is a 50m radius space around the point which ...
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4answers
891 views

Buffering only sides of polygons in QGIS?

My goal is to create a buffer from a polygon. But the edges are the problem. I can't really explain it in words, so I will post a screenshot. That's the way I want it to look. So the goal is, that the ...
2
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1answer
227 views

Creating buffer around features using GeoTools?

I want to develop a simple GIS application using GeoTools. I have looked at the tutorials but i could get to much meaningful from them. I have a simple JMapFrame to which add can add a featureLayer ...
5
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1answer
162 views

Creating unique buffer for each set of points separately and in one procedure using QGIS?

How could I create a buffer for each set of points (colour group) separately and in one procedure in QGIS 3? The image below shows a subset of points for buffering.
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1answer
29 views

Using “Difference” geoprocessing tool on Big Data taking a very long time

I am using QGIS Bonn 3.2.3. I've recently been using the Difference function to calculate a list of points and it is taking a terribly long time. I was wondering if you could point out any obvious ...
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1answer
271 views

Create a buffer around points

This is probably one of the simplest GIS tasks to do, but I am struggling. I have tried to adapt this answer but it appears not to work Create buffers around points and merge with ...
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1answer
324 views

PostGIS metric buffer [duplicate]

I'd like to form a 500 meter buffer around a coordinate. That coordinate is in WGS 84. I've been playing with this for a little and seem to have a solution, but is seems way too complicated: SELECT ...
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0answers
12 views

Buffer tool returns huge buffer in QGIS3 [duplicate]

I am trying to apply a buffer in QGIS3 using the buffer tool. The layer I apply the buffer is a CSV layer with EPSG4326-WGS84 reference system. In the first image are my points. When I apply the ...
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2answers
291 views

Removing Intersection of Buffers in Same Layers

I have created a series of buffer regions around line segments in QGIS (in my case a road network): The buffers are in transparent blue with the darker circles being where the buffer segments overlap....
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0answers
16 views

Apply Distance Buffer to Lat/Lon Points [duplicate]

I have a CSV with three columns: CSV Sample: lat,lon,fhr 25.5,-61.7,0 26.1,-63.2,6 26.7,-64.7,12 27.3,-66.2,18 28.2,-67.7,24 29.1,-69.3,30 30.1,-70.6,36 31.3,-71.6,42 32.5,-72.7,48 33.3,-73.9,54 34....
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1answer
39 views

Suggestions on how I can depict numerous cell towers with different ranges?

I am trying to make buffers dependent on cell tower ranges. Does anyone have any suggestion on how to insert distance buffers of various that are dependent on attribute values in one layer? I am ...
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0answers
47 views

QGIS plugin (or other method) to create multi-layer buffer simultaneousely based on parameter input? [closed]

I'm looking for a way to create buffers around objects from more than one layer at the same time, with specific buffer distances, and possibly rendering live the global buffer (resulting of all the ...
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1answer
74 views

Selecting all polygons along northern edge of shapefile in R

I have a shapefile of Mexico composed of Admin 2 polygons. I am trying to create a buffer along the Mexico-US border, in R considering this is a shapefile of Mexico only and I want to retain the ...
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3answers
54 views

If then question with raster calcuator

I have several buffers to be added together (Cold, Hot, Raining, etc.), but they only need to be added if they exist. So I currently have create buffer if Cold else no buffer. (I did convert polys ...
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1answer
39 views

Fixed buffer remove overlayed area

I have a problem with a fixed layer. I have to count accident by Link within 100m area. When I use a Fixed Distance Buffer, there is a problem because some area is overlayed so they will count 1 ...
2
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1answer
55 views

Find features inside a buffer

I want to find features that are inside a buffer around a line. The idea is to find how far along the line the intersection with the housepolygons happens. I have tried the intersect tool with using a ...
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1answer
82 views

Agglomerate nearby points and sum attributes

I've got a number of ticket outlets, each of which has annual sales as an attribute. I'm looking to represent outlets that are near to each other (within 100m) as one single large outlet, with the sum ...
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1answer
64 views

GRASS: Can v.buffer use geodesic distance like r.buffer does?

Question: In GRASS GIS, can v.buffer use geodesic distance like r.buffer does? If v.buffer can't use geodesic distance, is there a way to do vector geodesic buffering (ideally in GRASS, but I can ...
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1answer
2k views

Creating buffers around points and merging with SpatialPolygonsDataFrame to create a list of matched polygons and area of intersection?

I have data on polling booths as points and data on village boundaries as polygons. I want to create buffers of 1km around the polling booths and (a) save the ID of all the villages that intersect ...
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1answer
567 views

Spatial joining/merging two spatial points data frames in R via buffer?

I'm trying to spatial join/merge two spatial points data frames in R. One data frame is lacking IDs, which is the information that needs to be joined to the other data frame. To be specific, any point ...
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0answers
67 views

Algorithm or library for buffer zone for lat-lon (wgs) coordinates in global scale

Can anyone point to generic algorithm or library for buffer zones if the source data is in WGS84 degrees? The buffer width should be in meters, as buffer in degrees it generally does not make much ...
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0answers
20 views

Finding number of links where buffer and link intersect using PyQGIS?

Created a buffer of 0.001 size at the beginning and end of each link. I want to extract the starting point and the ending point of which the number of the buffer and the link intersect is one. layer =...
2
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1answer
224 views

Buffering with rectangular end caps and not dissolving

I am using QGIS to attempt to achieve what should be a simple task. I need to buffer a polygon layer with flat end caps, and without dissolving the resulting layer. In QGIS there are 3 tools for ...
2
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0answers
55 views

Using PyQGIS to buffer point? [duplicate]

We extracted the start and end points in the link layer. Can I buffer at the start and end points? (Size 0.001) layer = iface.activeLayer() for f in layer.getFeatures(): geom = f.geometry()....
4
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1answer
117 views

Variable width buffer based on axis directions in QGIS

I need to buffer a polygon with a different distance in the x and y directions. I should add that my polygon has the following properties: closed (obviously) simple (no edge crossing, no more ...
3
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2answers
49 views

Calculating boundary around all land on Earth?

I hope this is right here in Earth Science, it's a bit of a Computer Science-y problem, too: I want draw (or really just calculate the total area) of a boundary of X miles (with X varying between ...
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0answers
101 views

Single Sided Buffer Error QGIS

I have delineated a shoreline and created an offset "buffer" of 75' and 250'. When projected onto the screen it appears as though a computation error has occurred and the buffers extend onto the left ...
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2answers
375 views

Create buffers from points by attribute

Suppose I have a points shapefile with a 'group' attribute, each value of which identifies a number of points (e.g. group=1 identifies points 1,3,6 and group=2 identifies points 2,4,5). How can I ...
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2answers
653 views

Creating flat end buffer using geometry generator in QGIS?

I'm new to GIS software and I've been introduced to QGIS 2.18 as part of my internship. I was tasked with creating new styles for the company's maps, however I've encountered a problem with one of ...
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1answer
32 views

How can I do operations with points inside a buffer in GIS

I have a dataset with around 4k schools for with I have their location (longitude and latitude) and enrolment which I have uploaded to a GIS map. I want to do an operation with the competing schools ...
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0answers
218 views

Buffered one-to-many spatial join QGIS3 [closed]

I'm trying to spatial join bus stops and census block groups. However, these are a bit tricky with walking distance. Many bus stops are right on the borders of census block groups or within walking ...
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0answers
76 views

Dealing with negative buffers in ArcGIS Desktop when original polygon is narrower than buffer width? [closed]

I am having problems creating a negative 75m buffer with polygons which have regions narrower than 150m. To add some context, I have polygons which are created automatically out of enginnering data ...
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1answer
41 views

Extracting average cell values of multiple buffer zones in ArcMap?

I am trying to find a tool capable of extracting the average values of multiple buffers zones that I created around some GPS coordinates. I have a layer in ArcMap that shows temperature in a field, I ...
7
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1answer
432 views

Single sided buffers gives not only buffer on one side

I have tried to use single sided buffers to make buffer on one side of of a line. But the buffer is sometimes changing sides as shown below: Must mention that the line is straight: What is the ...
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0answers
44 views

Efficient way for Buffering polygons with a large dataset

I use artificial grid cells (Polygons) for Sub-Saharan Africa to do a sub-national study. I have many variables assigned to each grid cell. Now, I need to include information (development aid programs)...