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

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34 views

Buffer Problems While Using Model Builder

I've created a model that is supposed to allow a user to select an area of road and will then highlight the attributes within a user-specified buffer distance from the selected area. This is what I've ...
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0answers
23 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 ...
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1answer
25 views

Buffering continuously throws error “Background Server Threw an Exception” (Error 001143). Why?

I have written a code to create 1 meter buffers for features of converted feature classes (from rasters). I want to dissolve by the field "Class" so that I will have significantly smaller datasets to ...
2
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2answers
41 views

Create a buffer in decimal degrees

I am working with data that are unprojected (they are in lat/lon) and for every point I want to create a buffer of 800 meter. How can I construct a buffer of 800m. but give the distance in decimal ...
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1answer
27 views

Model Builder - Integrating Select by Location and Buffer

So I'm trying to create a model tool in ArcGIS 10.1 that will integrate select by location and buffer. These are the features that the user is supposed to be able to choose: Select Layer by ...
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1answer
30 views

How to compute tabulate intersection in QGIS?

I have a base layer of census data in census tracts (polygons). I'm looking to intersect those tracts with a buffer layer but I only want to include those census tracts whose area is over 50% within ...
0
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2answers
23 views

Model Builder - Using Only Certain Fields

I have to use ModelBuilder in ArcGIS 10.1 to create a mix of two tools: buffer and select by location. However, I'm supposed to let the user only enter certain information, and have other fields be ...
0
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1answer
31 views

Road network comparisons - how to extract roads that do not completely fall within the buffer

I am trying to compare how well one road network aligns with another - I have created a buffer around the first network and would like to select only the roads from the second network that fall ...
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0answers
29 views

On-The-Fly ModelBuilding

I am wondering to change and alter a model on the fly. I have a whole process( model for the rest is done) that relies on different settings for buffers, and what I am trying to do is after I am not ...
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3answers
65 views

A mistake in very easy python code (Buffer 1 - Buffer 2- Erase 2 fom 1)

I need to make 500m rings (not full circle) around points (cities). I try to make 1. buffer: 2500 - 8500m (each 500m) and second buffer 3000 - 9000 (each 500m) and then erase 2500m from 3000m, 3000m ...
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2answers
119 views

Correct use of buffering by field (distance) in ArcGIS for Desktop?

I am trying to create a buffer in meters around some points using a field with the distance. However I cannot assign a distance type to use and by default I assume it's doing decimal degrees (I am ...
1
vote
1answer
22 views

Automation of Land Use composition in ArcGIS

I am using ArcGIS 10.1 and I have two shapefiles I'd like to process: A Polygon shapefile with 1000 features representing lakes covering a specific area, and; A Polygon shapefile with the Land Use ...
2
votes
0answers
20 views

Create buffer based on polyline without line end caps and without dissolving the created polygons in QGis

I have a projected line layer (Shapefile) in QGIS. For every line segment I want to create a polygon without line end caps. The resulting polygone should not be dissolved to a single one. I tried ...
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1answer
48 views

Converting a buffer polygon to polyline

I'm trying to complete the following steps. What tools should I use? Convert 2km buffer polygons into polylines Select random point along these lines for each feature using Random Point tool ...
0
votes
1answer
72 views

How do I create a projection file using GDAL

I am trying to obtain a buffer from a polyline file using GDAL with the following function def createBuffer(inputfn, outputBufferfn, bufferDist): inputds = ogr.Open(inputfn) inputlyr = ...
0
votes
1answer
39 views

ArcGIS bufferzone projection

I have a point shp file of 445 points around the globe, that i need to create buffer-zone of 10 km around each point, the points shp file is in wgs1984 geographic coordinate and wgs1984 platte carre ...
0
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1answer
20 views

Measuring roundness using buffers around centroids [duplicate]

I'm trying to measure the compactness (roundness) of some 800 polygons of different shape and size. I created the centroids and what I want to do now is to buffer those centroids with the exact same ...
2
votes
1answer
42 views

Isolate features within buffer of another feature - QGIS

I have 2 shapes - one representing line features of pipes, another of roads. I would like to create a separate shapefile consisting only of the pipes that lie within 20m of the roads. Only the ...
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vote
2answers
22 views

Assigning land values within buffer using ArcGIS for Desktop?

I'm new to ArcGIS and having some trouble getting this done. I have a layer consisting of points of bird nesting sites and I have created a multiple ring buffer around this site, with rings at 5 km ...
3
votes
2answers
151 views

Buffer Polygon, BUT Inside and Only for a Distance

There has to be an easy way to do this. Been plugging away for an hour and I don't know if I am brain dead or what. What I need to do is buffer a polygon on the inside, but only for 500 metres. If ...
0
votes
1answer
52 views

Creating a buffer - ArcGis Javascript API

How can I create a buffer that is based on the shape of the geometry that has been drawn. My map application creates a default square buffer extent and I want to create a buffer round a circle based ...
2
votes
1answer
63 views

Water feature growth

I have a water feature layer which includes rivers, lakes and streams. I want to create, essentially, a buffer of these features equal to that of a 50cm increase in elevation from its current ...
0
votes
0answers
44 views

Is it possible to “re-buffer” river polygon dataset? [duplicate]

I've river polygon data representing the water quality. This polygon data were derived from polyline dataset according to a buffer distance in the attribute table. Unfortunately I don't have this line ...
2
votes
2answers
66 views

What's the best way to determine if a point is within a certain distance of a GEOJSON polygon?

What's the best way to determine if a point is within a certain distance of a GEOJSON polygon? Should one use TurfJS buffer method (https://github.com/Turfjs/turf-buffer#turf-buffer)? Can one perform ...
1
vote
1answer
41 views

buffering very short line segments with a flat end

I need to buffer a collection of line segments, with a flat shape (corners) at the line ends, as opposed to round. 99% of them work fine in ArcGIS, but some individual line segments are quite short ...
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vote
2answers
31 views

How to find “empty” buffer?

So I have lines(road network) and buffers around them. I need to find "empty bufers" whose lines is missing (pic below). Lines have attributes of buffer width, but it is incorrect in some cases (does ...
0
votes
1answer
42 views

How can I join a buffer layer to the layer it was created from?

I have two relevant layers for this problem: Real estate parcels (point data) Multiple ring buffer layer - contains multiple buffer rings around each particular real estate parcel. (0.5, 1, 1.5, ...
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vote
2answers
56 views

How can I calculate how many of a certain feature lie within my various buffer rings?

I am using ArcMap and I have a series of real estate parcels mapped along with a series of wind turbines. I have created multiple buffer rings around each real estate parcel with distances (0.5, 1, ...
0
votes
1answer
42 views

Buffer is not displaying on the map?

As you can see on the screen shot below, I'm trying to create a 3 km buffer around the roads. After clicking OK, the buffer is successfully created and added to the table of content but nothing shows ...
0
votes
1answer
34 views

ArcGIS: Locate features along routes, line vs polygon

I want to use Locate Features along Routes to locate the polylines below: The routed feature is in red and I want to locate the green lines. I have buffered these but found it only locates the item ...
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0answers
40 views

Buffer -over river line with 20m over

I want to make a buffer from the river line with only the points that have over 20 m (elevation) from river line. (I hope you understand:D). How can I do that? Here is the picture....I want only ...
2
votes
1answer
52 views

Join only if one line line intersects buffer. Do not if two

I've got a road network (line features) and a trip of GPS-Points. I want to join attributes from the road network to every point. So for each point i create a buffer. If the buffer intersects with a ...
2
votes
1answer
52 views

Load buffer by percentage plugin python error

I couldn't install the buffer by percentage plugin on the QGIS 2.6 (I have Windows 8.1 on my pc), and gives a error message - the plugin is broken. Then when I start the QGIS it gives the following ...
3
votes
1answer
81 views

PostGIS Nearest Neighbour outside buffer

I am trying to find the 6 nearest neighbours to a point which are outside a defined buffer. Basically I am comparing points of the same table and working with Mike Gleason's examples. WITH subq AS ...
0
votes
1answer
43 views

Python buffer in a line using GDAL

I am trying to make a buffer from a line using gdal. I use the example in the gdal Cookbook import ogr, os def createBuffer(inputfn, outputBufferfn, bufferDist): inputds = ogr.Open(inputfn) ...
0
votes
1answer
76 views

How to calculate average NDVI values for buffers in ArcGIS?

I would need to calculate an average NDVI value for each buffer among everal hundred buffer-areas. The buffer areas are built around observation points. I have all buffer areas in one .shp file and ...
1
vote
0answers
53 views

Creating a buffer round a polyline

At the moment the code I use creates a buffer extending 1000km from each geometry creating square buffer zones over polygons, lines and points. How can I amend the code so that it creates a 'sausage' ...
1
vote
3answers
90 views

Creating buffer around particular raster cells using ArcGIS for Desktop?

I would like to draw 100m buffers around particular raster cells (artificial surfaces) in my LandCover raster layer in ArcMap10.2. The Buffer tool only works with polygon and the Expand tool always ...
0
votes
0answers
28 views

Capturing points slightly out at sea

I have two tables one containing points (points) and the other polygons (polygons). I want to generate a two-columns table identifying for each point of the first table the polygon containing it. So ...
0
votes
1answer
26 views

Dissolving and returning values from primary lines

Im building a model and I need to dissolve line, that I marked in picture, to a line with field(NUMBER_OF_LINES) value of 2. Thsi filed represents how many lines were constructed to one line after ...
3
votes
0answers
44 views

Dilating a polygon by a circle sector

I want to dilate a polygon by a circle sector in ArcMap. Because my python skills are not that good to figure out how I can use the R prototype of How to create an oriented buffer using arcpy? . Is ...
0
votes
1answer
46 views

buffering one feature class by different distance, the result is the buffer distance become same 100 feet

try: # Import modules import arcpy from arcpy import env # Set the workspace env.workspace = r"C:\Esripresspython\GISTPython\Data\City of Oleander.gdb" # Create a variable with the name of ...
0
votes
0answers
31 views

How to find the overlap of two buffer polygons?

The question states: 2 volunteer fire departments are interested in creating a 600m no smoking zone around each of their stations. What is the area (km2) of overlap between the two zones? ...
0
votes
1answer
101 views

Spatial search performance on a collection of Points in a PostGis database

Let's assume you have a huge PostGis spatial table (using Postgresql 9.2, postgis 1.5) : BIGTABLE ( p Point, someData varchar ) which contains millions of records. Each record has been created ...
2
votes
1answer
35 views

How to clip buffer polygon from its source line?

I'm trying to clip a 30 meter buffer polygon built around a highway line feature using a smaller 6 meter buffer that represents the actual width of the road, so that the original 30 meter buffer is ...
2
votes
0answers
72 views

Iterating between two layers using QGIS python

I will try and explain my situation as clearly as possible. I just created my first plugin that is being used to analyze between various layers and give back quantities to the user. Most of it is ...
3
votes
1answer
131 views

How to create a cluster of crashes?

I have a shapefile with 52K points of road accidents, between 2007 and 2012. Each accident has a severity index. I want show clusters of 5 accidents (at least), for each year, that have a severity ...
0
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2answers
127 views

How to draw a perfect circle with a set radius in meters on map?

Following this istructions on how to draw a circle I can make buffer layer on each point I need. I am not able to draw perfects circle because the buffer will be elliptic? The CSR is EPSG:4326 - WGS ...
0
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0answers
39 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 : ...
2
votes
1answer
124 views

create polygons and fishnets of specific size and orientation and buffers

I want to study 6 areas in the field and in order to do so I want to divide each one of them into smaller areas/parts. What I would like to do is find an average square or rectangle area surface ...