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

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How to find Nearest point on line from a point cordinate in SQL server

I want to find out the nearest point on my road network which is a multiline string from a point with lat lon value. The below code I have tried for finding buffer distance line from a point. ...
4
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2answers
2k views

Multiple ring buffer with attributes

Building on ArcGIS: inside buffer with attributes?, I'd like to be able to create multiple ring buffers, while retaining (and possibly dissolving on) attribute values. How can this be done?
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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?
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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 ...
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1answer
159 views

Select points within a buffer in QGIS

In my vector layer I want to select points within a buffer of 12 meters and with an exception (if 'Name' is not "James" than select). Is this possible with "select by expression"?
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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 ...
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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 ...
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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
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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 ...
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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 ...
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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
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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?
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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 ...
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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 ...
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2answers
316 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
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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 ...
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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
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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 ...
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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
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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
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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 ...
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2answers
452 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?
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2answers
166 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 ...
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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 ...
0
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1answer
246 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 ST_AsTEXT(ST_Buffer((ST_GeomFromText('...
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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 ...
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78 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
2k 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
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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 ...
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1answer
46 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
926 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
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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 ...
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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 ...
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2answers
154 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 ...
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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 ...
1
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1answer
274 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
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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
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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 ...
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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 ...
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1answer
28 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
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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 ...
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1answer
417 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 ...
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1answer
351 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
127 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 ...
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0answers
53 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 (EPSG:...
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2answers
131 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
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1answer
44 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
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3answers
104 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 buffer....