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Questions tagged [buffer]

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

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How can I eliminate the overlapping effect when using a transparency without using Dissolve All to create my buffers?

I have 2 shapefiles that (along with a few others) I am trying to export into a .kmz file by using the Map to KML tool in the Conversion toolbox. These shapefiles contain polygon features that ...
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1answer
30 views

Creating buffers around locations when using a Geographic Coordinate System

Background I am trying to make students familiarize with some some basic GIS procedures (using QGIS 2.18), like creating simple maps featuring points that represent the location of shops in a given ...
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1answer
52 views

Buffering a line

I would like to construct a feature class consisting of every polygon in the landuse shape file entirely within a 300 Feet buffer of the Road. But I always get error of C:\Road300 does not exist or ...
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1answer
32 views

Fixed Buffer disappears after closing QGIS [closed]

Has anyone else experienced this problem and knows how to solve it? When I reopen QGIS the buffer layer is still there but the buffer lines themselves are not shown in the map anymore.
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1answer
60 views

How to change a buffer's shape?

I have made a buffer around a point using the CRS WGS84. I made my buffer by Selecting a point and using the Buffer tool within the Processing toolbox. I ideally wanted my buffer in meters but ...
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0answers
31 views

Converting single point layer to buffered raster using QGIS?

I'm trying to use the proximity tool to create a distance raster from a single vector point. I found here: Calculating distance to points in QGIS and [d-3] Create Proximity Raster. However, I couldn't ...
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31 views

Buffering lines around point using QGIS? [duplicate]

I am not sure if I can achieve this using QGIS. I'm trying to make a tool which takes a single point which is a wave source with an initial magnitude. The value decreases as you go further away from ...
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1answer
56 views

Vector averaging wind direction using focal buffers in R?

I have a raster of 1 km wind direction data that I need to run a focal buffer on. Instead of using the default buffering mean function, I need to use vector averaging since my wind direction is in ...
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1answer
30 views

Select by Attribute homework help

I am learning how to use ArcGIS and I am unsure how to assign appropriate buffer distance to each lake size classes for a homework assignment, please see the picture below. The goal is to place ...
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1answer
43 views

Why does buffer produce same error consistently?

I have created a point --> Figure 1 I have then selected the Buffer tool and created a buffer around my chosen point, with a degree interval of 0.012. I have selected the End style cap as square and ...
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1answer
55 views

Network service area - QGIS

I want to check if schools from my hometown are accessible for students who use public transportation, so I need to perform this analysis in order to see if the schools are located in the range of ~...
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26 views

Why is my area offset using the V.buffer tool

I am using QGIS V 3.2, and I am trying to use the v.buffer GRASS TOOL to create a 500m exclusion zone (Circle) around a point. After creating a point shapefile I then ran the v.buffer tool and set the ...
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2answers
85 views

How to buffer a pair of longitude and latitude coordinates in R?

I have a pair of longitude and latitude coordinates, and I want to plot a 500 meter buffer around it using leaflet or mapview. st_buffer, however, does not correctly buffer longitude/latitude data. ...
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1answer
29 views

What is the unit of measurement of the distance between two points using geopandas distance function?

I have created three buffers using geopandas in python and I have a few points scattered here and there, some of them are inside the buffers.But the problem is the following: When I obtain distance ...
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1answer
40 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
26 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
38 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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35 views

How to get/calculate the percentage of wooded area around many points? (in QGIS)

I have 56 points in NE of Slovenia for which I would like to know the amount (percent ) of wooded area in 500m perimiter around each point. So first I created a buffer around each point (r-500m) and ...
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1answer
33 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
30 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
66 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
47 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
272 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
40 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
32 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
32 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
30 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
31 views

Buffer units in Geographic Information Systems

Why the unit of buffer is in meter? Or by default they are found as meters?
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1answer
69 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
27 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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0answers
12 views

How to difference clip 2 layers with independent clips for each feature?

I use QGIS 3.2.3 'Bonna'. All my layers are in the same UTM zone, so map unit is in meter to facilitate my work. I'm working on flightpaths and wish to calculate the effective width strip for each of ...
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1answer
30 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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0answers
17 views

How to find route/path followed by vehicle from pre defined path? [duplicate]

A few vehicles run daily in the city on daily basis on the pre-defined routes/path but they sometime cannot follow the pre-defined path. Now how to calculate the length of route the vehicle traveled ...
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4answers
775 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 ...
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1answer
47 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 ...
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1answer
96 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
22 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
67 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
67 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
130 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
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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
37 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
36 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
48 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
46 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
35 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 ...
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1answer
52 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
39 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
38 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 ...