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

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5
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1answer
51 views

QGIS Renders Buffer Polygons from ArcGIS Feature Class Differently

I have a polygon feature class stored in an ArcGIS geodatabase. All of the shapes are buffers of a point layer created using the editor menu's 'Buffer' command. In ArcMap 10.3.1 the data looks like ...
1
vote
0answers
73 views

Find distance from points along lines [closed]

I have two layers, one is a point layer of schools and another is a polyline layer of streets. The end goal is to create a buffer along the lines that is 20 feet from the centerline that goes 1 mile ...
1
vote
1answer
43 views

Area of influence with CartoDB

I am working on a city transport map, and for fun (and practice) I try to make an area of influence of transport station. But, whatever I try, something gets wrong. So two questions. 1 - How can I ...
0
votes
1answer
30 views

Arcpy buff does not provide the output attribute “Shape_Area”

I made a loop to buffer several times a certain network using arcpy. What I noticed is that when I run the code, the output files do not have the attribute fields "Shape_Area" and "Shape_Length" that ...
1
vote
1answer
24 views

ArcGIS: segmenting buffer based on polygon corners

I have hundreds of square polygons which I've created a single continuous buffer around the polygons. What I'd like to try and do is try and break this buffer down into segments based on the corners ...
2
votes
1answer
89 views

How do you create a buffer for a specific feature in QGIS?

Fairly competent ArcGIS user here, very new to QGIS. What I am trying to do is create a one-mile buffer around the highlighted parcel in QGIS 2.14 (from a .shp). Seemed straightforward enough: ...
2
votes
1answer
55 views

Cannot perform buffering loop with arcpy

I have 5 buffers to perform using 5 fields of a shapefile. I try to run it with the following code: Buffers = ['JF1','JF2','JF3','FF','FB'] env.workspace = "C:\Mydirectory\Myfile.shp" network = "C:\...
1
vote
0answers
16 views

Alternative quicker workflows to the standard Buffer tool in ArcGIS for Desktop 10.3 [duplicate]

I have a point layer representing oil and gas exploration wells containing 500,000 features and have created a 50km dissolved buffer polygon to use in another workflow: The completion time for the ...
0
votes
2answers
29 views

What CRS to use when creating buffer all over the world in QGIS

I trying to create buffers (50km) around many points all over the world (airport locations) in QGIS. I will then overlay these buffers with a world-wide raster dataset so I can extract information ...
0
votes
0answers
19 views

Finding measuring units [duplicate]

Every time I perform the geoprocessing tools buffer or intersect, my layer gains two more attribute columns, named "Shape_Leng" and "Shape_Area". How can I know in which measuring units are these ...
2
votes
0answers
34 views

How do I report area statistics for land cover classes at equal sections along a river?

I have a river outlined: Using QGIS, the Semi-automatic Classification plugin and Landsat 8 images I classified the habitats (blue=water, yellow=sand/rock...,green=vegetation/algae) inside the river ...
1
vote
1answer
19 views

Print Composer Grid Coordinate Buffer

Is there a way to create buffer for grid coordinates in Print Composer? I prefer to add the grid co-ords inside the map but the coords are often overwritten by map data which makes them impossible to ...
3
votes
2answers
94 views

How to generate a buffer outside polygons having a given pixel value?

For example, I would like to build a 20-m buffer (represented in yellow in the image below) outside polygons having a value of 2 (represented in green) and to assign the value of 3 to buffer cells. ...
3
votes
1answer
92 views

Making multiple buffer, one with field values, one with a fixed value

I use ArcGIS 10.2.2 Basic. I have a point shape file with a field called buffer with different values, depending of what kind of type the point is. Some of these points also need an extra buffer ...
1
vote
0answers
26 views

How can you define distance in QGIS Multiple ring buffer? [duplicate]

I am trying to create multiple buffers around point data. I need to crate buffers of 10 miles, but I cannot find a way to define this. I have tried using both the multiring buffer plugin and the multi-...
0
votes
0answers
38 views

Projecting a layer to another CRS changes the actual distance

I'm trying to generate a buffer around some 1,000 points. My layer is on WGS-84, so I understand I need to save the layer with a different CRS that works with meters (Israeli one - ITM). However, when ...
0
votes
0answers
33 views

How to extract data from multi-ring buffers?

I am using ArcGIS with full extensions. I have a Uni project which requires me to extract the towns/cities that lie within buffers of landfill sites. I have managed to extract the total population ...
4
votes
5answers
176 views

How to visualize point accuracy with buffers in QGIS?

I have a CSV file that contains 3 columns - Lat, Long, and Accuracy. The Lat and Long fields contain point data in decimal format. The Accuracy fields contain a numeric values that indicate the ...
1
vote
1answer
103 views

Merge and dissolve overlapping polygons?

I have a situation in which I have both network buffers and circular buffers around the same points (as separate feature classes), and I want to merge the buffers and dissolve into one polygon for ...
0
votes
0answers
8 views

Display 3D collada files and shapefiles [duplicate]

How do I display 3D Collada (or Multipatch) building model along with some 3D buffer shapefiles using python? I was using arcpy for buffering, but arcpy does not have the feature to add shapefiles ...
2
votes
0answers
28 views

Creating a cumulative factor based on multiple buffers

I'm using QGIS 2.12.0 and am trying to formulate a hierarchy for the risk factor associated with footpath polygons based on their proximity to pedestrian generators and the importance factor of that ...
3
votes
1answer
57 views

polygon split with predefined area

I am trying to split an irregular polygon into 120 equal area blocks. I also need a buffer around each new block within the polygon. Is this possible in QGIS 2.12.1?
2
votes
1answer
44 views

Correlation of yield data within a buffer zone

Working with QGIS 2.12.1-Lyon, I am trying to compare one point (single shape file) with multiple others that fall within a buffer zone of 10m i.e. comparing one shape file with another. The end ...
1
vote
0answers
50 views

Combining attributes of point data within buffer using QGIS?

I have city data broken down into intersections and roads. Around each intersection, I have created a buffer. I also have parcel data, including the attribute "gross tax 2015" for each parcel. I ...
0
votes
3answers
49 views

I have many points (the points have elevation) I want to remove some points that are too close together

How I can select points in a buffer (just each buffer) and among them choose a point that having more elevation? (in ArcMap) (Each point can be in several buffer and as each buffer can have multiple ...
3
votes
1answer
57 views

Problem with buffers - QGIS buffers

I have a problem with the function buffers in QGIS. I prepared a layer with bus stops and buffers for them (500 m). Then I joined layer with buffers and layer with density of population. I want to ...
1
vote
1answer
49 views

Separate buffer for road lines

I want to a buffer around road (dwg file) in Arcgis. I am merging road lines but there are separate buffers for every line of road.
3
votes
1answer
68 views

Qgis 2.14 Changing line and buffer at the same time

I have created many buffers for a line shapefile, but now I have to change the line path and would like the buffers to change automatically. Is this possible?
0
votes
0answers
31 views

Buffering road segments based on point ID

I need to create a buffer around bridge points along the roads underneath. I created a model that does this - so it buffers the bridges, clips the roads layer to the buffered shape, but since the road ...
2
votes
0answers
91 views

Extract values from Rasters in R based on spatial points and spatial polygons

I am trying to extract values from a raster file using the extract command in R mentioned here: http://www.inside-r.org/packages/cran/raster/docs/extract My raster file is unprojected (WGS84 ...
0
votes
0answers
22 views

Examining the information in the buffer

I am using ArcGIS 10.3 for Desktop. I want to combine the following two data sets. 10km buffer of housing data(polygon) road data(polyline). It looks like this: I want to know the object ID ...
2
votes
1answer
68 views

QGIS Buffer and CRS [duplicate]

I am working on a Project for an assignment. Basically I want the points on the map to have a 3 mile radius around them. The places are from a shape file. Once I try to set a radius I am selecting the ...
4
votes
1answer
73 views

Find Co-located points in single layer

I have a layer (currently the source is a csv file) with 130,000 points. Many of these points are co-located in a building room. How can I identify points that are within a small distance of another ...
1
vote
0answers
34 views

How to compare distributions to determine if facilities are in the best location to serve the population? [closed]

I am using ArcGIS 10.3 for this project. I am interested in determining how well (coverage or overlap) testing facilities serve high disease prevalence neighborhoods. I geocoded both the testing ...
4
votes
1answer
38 views

How to extract a buffer layer from a vast amount of individual buffers around polygons using ArcMap?

I have a vector layer containing nearly 8000 singlepart polygons. It looks like this: I want statistics on the area that is further than 2,5m away from any border. I thought I could do this by ...
2
votes
1answer
124 views

buffer in spsample for distance between randomly selected points

I wanted to know if there is a way to add a buffer in the function spsample in the sp package. I am randomly selecting points within 28 polygons and would like to specific a minimum distance the ...
1
vote
1answer
69 views

Shapefile buffer assigning to each buffer a different length

I am new to ArcGIS and Python. I have drawn a set of lines (corresponding to a network) in a shapefile. I would like to buffer them, but each line has a different buffer length, so I thought to do it ...
7
votes
2answers
165 views

How to automatically sum up values within buffers?

I want to establish the population figures within multi-ring buffers around certain site. I have set up the buffers and am running a select by location query on each concentric ring. Once the ...
1
vote
1answer
48 views

QGIS: Buffer around external border of a country based on federal state borders

based on the question "QGIS: several layers - query" I have an additional question: With "join attributes by location" I got a layer that constist of the city names with the corresponding ferdale ...
4
votes
1answer
98 views

Extracting cell size of Raster as value for buffering using ModelBuilder?

I am creating a model in ArcGIS ModelBuilder to buffer a line. I would like the buffer distance to be based on the cell size of a raster. The cell size may change depending upon which raster the user ...
2
votes
0answers
34 views

Buffer for network roads in QGIS [duplicate]

How can I create "buffers" or vector from values ​​from a layer of points, where the "buffers" are "tied" to the streets? Example: A bus station, I would like to create vectors within 100 m range ...
2
votes
0answers
24 views

Grid buffer in QGIS [duplicate]

I do have a raster file (grid) which I have processed before with the SAGA kriging tool. Is it possible to buffer this raster file a little bit (expanding the interpolated result) of 1 or 2 grids? I ...
1
vote
0answers
57 views

How to create buffers having regard to topography with QGIS

I want to create buffers of 25 kilometers around points in a point-shapefile with QGIS. My problem is that I don't need an air-line distance of 25 km around the points, but a "real distance" having ...
10
votes
2answers
412 views

Create area buffers that are limited by a coastline

I'm trying to use ArcGIS 10.2 to create a buffer of points based on a pre-defined area (e.g 400 sq km). Further to that, the buffers of some of the points are close to the coastline that requires the ...
2
votes
0answers
78 views

QGIS 2.12.3 Crashes on buffering line vectors

I'm using QGIS 2.12.3 and I'm trying to create a buffer of 100 mt around a line vector using the Vector - Geoprocessing Buffer tool, but qgis crashes at every try. I've already checked that the RS of ...
0
votes
0answers
32 views

Batch zonal statistics from overlapping buffers in ArcGIS for Desktop?

I am trying to come up with an isolation index for islands in a lake. I started by generating a binary water/land raster of the study area. I would like to know the proportion of land to water ...
0
votes
1answer
24 views

Is it possible to create a KML to list the road names within a buffer?

I often need to know the road names within a given buffer of a polygon. Is it possible to create a KML that would stick a push pin in the roads and list the name so I could see them all in a drop down ...
1
vote
0answers
54 views

Multiple Selection Buffer OpenLayers

I want to draw multiple buffer selection on click so that each selection is saved in a different vector layer and buffer features in one vector layer. The following code works well for the first ...
2
votes
1answer
126 views

How to reclassify multiple ring buffer using ArcGIS ModelBuilder?

I want to automate some simple procedure in ArcGIS 10.1: create a multi-ring buffer around a point at distances 500, 1500, 2500, 3000, 10000 m. convert to raster reclassify the multiple ring raster ...
1
vote
2answers
151 views

Inaccurate Buffer Distances

When buffering a point, the result is inaccurate to the basemap. I specify a 200 foot buffer around a point however the resulting buffer has a distance from the point of about 260 feet. Both the ...