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

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26 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 ...
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1answer
36 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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3answers
73 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
156 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 ...
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1answer
27 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
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0answers
34 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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0answers
64 views

Determining homogenous blocks of individual tree species in a woodland, and creating a new shapefile without blocks/polygons of < minimum area?

I'm working on a project attempting to identify suitable woodland habitat for red squirrel translocation wherein conservation efforts could be focused. Below is a small section of the map showing ...
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1answer
80 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 ...
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1answer
47 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 ...
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1answer
86 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 = ...
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1answer
23 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
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1answer
49 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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2answers
34 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 ...
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1answer
56 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 ...
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votes
3answers
923 views

Create buffer around point in LeafletJS?

I am using LeafletJS. I want to create buffer around point. after Selecting a point buffer radius will be specifed by user in feet. After searching of awhile I found this link of JSTS. does JSTS ...
1
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2answers
262 views

Buffer point dataset based on compared value

I am creating polygons from the dissolved buffers of points and need to control the dissolve process. In the model the first stage is to assign high/med/blackspot using the following f2='ERROR' def ...
2
votes
2answers
148 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 ...
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votes
1answer
85 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 ...
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vote
1answer
76 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 ...
2
votes
1answer
64 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 ...
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0answers
52 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
2k views

How to Hide InfoWindow/Popup when “no information available” or when buffering?

I have an app that does some buffering, only problem is when I click on the map to put in the point/line/polygon vertices to do the buffer, I get popups at every mouseclick. It doesn't interrupt the ...
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2answers
34 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 ...
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2answers
94 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, ...
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1answer
53 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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1answer
45 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 ...
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1answer
51 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
42 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 ...
10
votes
2answers
1k views

How to buffer a line with different distances for left/right sides

How can I buffer a line in QGIS using one attribute for the left side of the line and one attribute for the right side of the line? I am trying to buffer a river with its bank width, which is ...
2
votes
1answer
77 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 ...
2
votes
1answer
56 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 ...
0
votes
1answer
52 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) ...
3
votes
1answer
97 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 ...
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3answers
145 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
1answer
137 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 ...
2
votes
2answers
2k views

polygons won't buffer in ArcMap

I have been trying to buffer 15 polygons (-15m) in ArcMap. I did a batch buffer and 13 polygons worked fine, the other 2 have not buffered, an error occurs: WARNING 000117: Warning empty output ...
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0answers
74 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' ...
0
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0answers
32 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
32 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
62 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 ...
2
votes
1answer
313 views

Creating buffers that will not overlap in QGIS

I am dealing with a .shp with a number of points in it. The distances between points range from ~300m to 5km. I wish to create a 1 km buffer around each point with as little overlap as possible. Each ...
0
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0answers
32 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
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1answer
120 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 ...
3
votes
1answer
137 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 ...
2
votes
0answers
78 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 ...
0
votes
1answer
54 views

Find Minimum Value of Point within a buffer output as a point file

I have a series of 30m buffers along a polyline (river). Within each buffer I have a series of points each point represents a 10m x 10m cell with an elevation value known as "Elev". I want to find ...
2
votes
1answer
252 views

How to create multiple buffers around line at equal intervals without typing in every value?

I have a line in ArcMap 10.2, and want to create lines to the right of it at 100 m, 200 m, 300 m etc. up until 1.7 km. Obviously typing in these values under 'multiple ring buffers' will take too much ...
2
votes
1answer
54 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 ...
3
votes
2answers
2k views

How can I use the Buffer Wizard in Modelbuilder or arcpy? (ArcMap 10)

I am creating a model in ArcMap 10 and I need to use the Buffer Wizard tool to create multiple buffers within a polygon feature class. The problem is, I can't seem to place the Buffer Wizard within my ...
0
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2answers
168 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 ...