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

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5
votes
2answers
282 views

Cutting a circular buffer via Arcpy

I am currently working with compressor stations on centerline routes. These compressor stations have a 3 mile buffer surrounding them. I wish to cut a portion of the circular buffer off. These cut ...
2
votes
0answers
42 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
20 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
47 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
58 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
30 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
32 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
55 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
2answers
447 views

Buffer in ArcView/Basic vs ArcInfo/Advanced level licenses of ArcGIS Desktop?

I have ArcGIS Desktop 9.3. Is Buffer only available with an ArcInfo (called Advanced from 10.0) or is there a way to buffer with an ArcView (called Basic from 10.0) level license?
7
votes
2answers
111 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
40 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
33 views

Extracting the cell size of a Raster as a value to use in buffering

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 ...
0
votes
1answer
203 views

How to create buffer around point having projection 4326

I am trying to create buffer (in meters) around point(long lat alt) which is in projection 4326 with below code. But it is not giving expected output. SELECT ...
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 ...
4
votes
1answer
195 views

How to Buffer selected polygons within same feature class using ArcGIS Pro?

When editing in ArcMap a workflow I used to create a polygon feature with a donut polygon in the same feature class around it was to: Digitize the polygon Use the Buffer from the pulldown on the ...
1
vote
0answers
76 views

Displaying buffer around feature using population values in ArcGIS for Desktop?

I am working on a project that is about park accessibility. I wanted to display a buffer from a park that shows potentially 3 acres/3000 population. I am using Census tract data and I have a shape ...
3
votes
1answer
1k views

How to obtain statistics within a Buffer/Catchment in MapInfo?

I need to calculate the population statistics within a 10 minute drivetime catchment from a point and within 1 Km Buffer from a point in MapInfo, how can I do that can someone please elaborate? I have ...
2
votes
0answers
22 views

Grid buffer in QGIS

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
1answer
42 views

Ways to reduce buffer if it passes through a certain layer

I am trying to do WiFi analysis on signal strength in ArcGIS Desktop, and one of the big problems that I am running into is how to reduce the signal when it comes in contact with a wall, as it does in ...
3
votes
2answers
872 views

How to do a Point to Polygon analysis with multiple variables in QGIS?

I have a database of almost 10k crimes, which are divided in to 10 categories and plotted on a map I also have a database of 12k addresses, which are also plotted on the map. I aim to perform a ...
10
votes
2answers
396 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
63 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 ...
1
vote
2answers
88 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 ...
0
votes
0answers
28 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 ...
1
vote
1answer
222 views

Creating buffer around WFS features to ease their selection in OpenLayers 2?

I'm using a WFS SelectFeature from OpenLayers 2 to show a Popup containing the features' attributes from line layers and point layers (from GeoServer). This works fine, but I would like to create a ...
4
votes
3answers
2k views

Summing attributes intersected by under a radius

Apologies - new user. I am working with QGIS on Mac OS X and with shapefiles downloaded from the US Census Bureau that show population data by state and by county. How do I: select certain points ...
0
votes
1answer
21 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
35 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 ...
1
vote
1answer
22 views

Creation of buffer area of 20mtrs upon click event on the base layer

I have a base layer upon which i wish to import a kml with certain lat lons and create a buffer region of 20mtrs around any point upon click event. i got google api for the same but want openlayers ...
3
votes
3answers
2k views

IFeatureBuffer - performance considerations (ArcObjects)

I'm trying to optimize my code to make it faster. I have a loop that reads some string input and creates points with the help of IFeatureBuffer and IFeatureCursor. If I create the buffer inside tho ...
2
votes
1answer
4k views

Dissolving two different buffers together so not overlapping using ArcGIS Desktop?

I am trying to find out how many registered sex offenders live within 2,000 feet of a school/park in a specific county. The park buffer and school buffer are dissolved but not together. I am also ...
1
vote
1answer
405 views

Minimizing error when buffering unprojected data in ArcGIS Desktop?

If I buffer hundreds of unprojected WGS84 points across the US by say, 3 miles, will I get accurate areas returned (3 x pi x r) for each of the circles created? I suspect not. If not, what would be ...
0
votes
1answer
347 views

Generating report or table for buffer zone using ArcGIS Desktop?

I have a polygon feature class. I create a buffer for this feature with a distance being 2 km. Now the buffer output intersect with features of the original polygon. So say for instance from the ...
2
votes
1answer
86 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
0answers
41 views

Cannot generate buffers in meters (even after “save as” in NAD83 / UTM 18N) using QGIS?

I am quite new to GIS and QGIS. I have 800 points with lat/lon (some locations in Massachusetts) in a .csv file. I use AddLayer to import the CSV file and save it as NAD83 / UTM 18N projection ...
7
votes
2answers
104 views

Creating a point on edge of closest polygon

My project is looking at a grid in the ocean. I want to capture each ocean point's distance to the nearest coastline as a weight, and then use buffer to capture the sum of nightlight data within a 1 ...
0
votes
1answer
32 views

ArcGIS - Make colour gradient in street network shapefile accordingly to buffer distance from central points (bus stops)

I need to do a colour gradient in the street network shapefile (cyan selection in the map attached, in a layer) accordingly to the distance from the points in the other layer (the more distant, the ...
6
votes
3answers
89 views

Select all polygons that are completely within a circular buffer

I made several buffers around some points. Now I want to select all polygons that are completely within this buffer. My problem is that I also get the polygons that are partially outside of the ...
2
votes
1answer
30 views

ArcGIS Buffer tool leaves out zero width buffers?

I have a polygon shapefile with 93 objects in it. They have a column with values for the buffer distance. 90 of these objects have 5 as a value, while the remaining 3 have 0. When I use the buffer ...
4
votes
0answers
60 views

Buffer neighbouring polygons without overlap using QGIS

Is it possible to create a buffer around neighbouring polygons, so that the new polygons do not overlap? Preferably in QGIS but any other tool will do. So instead of the first result I would like ...
0
votes
0answers
20 views

How to Find Source and target using STBuffer And STIntersects in SQL Server?

I am using this query to find the source and target from Routes table, but it's not getting the correct result SELECT TOP 1 a.target FROM Routes a WHERE ...
1
vote
0answers
59 views

Create Right of Way from Street Centerline file

I have a project where I would like to take all of the right of way areas in a county and categorize them based on type/ownership (state right of way vs. county vs. private and maintenance ...
2
votes
2answers
62 views

Is there a way to select all items within a circular buffer?

I want to select all the items within a circular buffer. Inside the buffer are multipolygons and multipoints. See the screenshot i have posted.
0
votes
1answer
438 views

Arcpy.Buffer_Analysis Does Not Create Feature Class

import arcpy arcpy.env.workspace = r'c:\data' fcs = str(raw_input('Please enter the layers you would like to buffer: ')) dist = str(raw_input('What would you like your buffer distance to be? ')) ...
0
votes
0answers
46 views

Select points greater than a certain distance from related points based on shared foreign key id

I have a PostGIS-enabled PostrgeSQL db, using QGIS, with data using EPSG:4326, and projected as EPSG:29903. I have a table with points with pk point_id and a table with images with fk point_id. I want ...
1
vote
1answer
34 views

Tabular Intersection producing Empty Output Why?

I am trying to run a Tabular Intersection on ArcGIS 10.2.2 between a 1000m buffer and a forest layer to establish the percentage cover and total area of trees within the buffer areas. Everytime I run ...
0
votes
2answers
79 views

How to create circles starting with points and attributes (diameter, lat/long)?

I have a point shapefile with attributes (diameter, latitude and longitude). For each point in that file, I want to create a polygon (circle) described by those attributes. The new shapefile should ...
1
vote
1answer
122 views

arcmap buffer geoprocessing range error

When I tried to create a buffer layer around a polyline layer. But I got the error as follows: The input was outside a +-360 longitude range or outside +-90 latitude. The input is : ...
3
votes
3answers
52 views

Circle created using ST_Buffer displays elongated on map

I am buffering a point to create a circle in PostGIS like: ST_Buffer(geo::geometry, .0002, 8) However, when displaying the polygon in Bing maps it ends up a vertically oriented ellipse or elongated ...
0
votes
1answer
38 views

Select points from Buffers in ArcMap?

I have a buffers and I want to select all points within each of the buffer and output it as a table. That means one buffer may have 0 to about 10 points in it. I have tried spatial Join and intersect ...