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

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2answers
251 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 ...
3
votes
2answers
135 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 ...
2
votes
2answers
35 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 ...
0
votes
1answer
28 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 ...
1
vote
1answer
30 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
53 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
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0answers
42 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 ...
1
vote
2answers
29 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 ...
1
vote
2answers
45 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
32 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, ...
0
votes
1answer
38 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
24 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 ...
1
vote
0answers
36 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
36 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 ...
1
vote
1answer
605 views

ArcMap 10.1 - Tabulate Area tool “doubling up” for Overlapping Buffer Zones

This question is related to a previous question I asked: Raster Version of Spatial Join (one to many) I used the Tabulate Area tool to crosstabulate values between an overlapping "buffrast" raster ...
2
votes
1answer
50 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 ...
1
vote
1answer
279 views

SQL Data: How to draw circles with a radius based on lat/long data in DB

I have a . sqlite file with many columns, two of those columns being lat and long. I've been searching around for a bit now (don't think I want to be using BuildCircleMbr from spatialite?) but I'm ...
0
votes
1answer
34 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) ...
2
votes
1answer
73 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 ...
1
vote
3answers
69 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
56 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
1k 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 ...
1
vote
0answers
45 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
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
23 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
39 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
274 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
votes
0answers
22 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
30 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
82 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
126 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
66 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
53 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
196 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
32 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
votes
2answers
102 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
votes
0answers
34 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
2answers
191 views

Separate a polygon in different polygons depending of the distance to another polygon

I have a reference polygon "R", and others polygons (in grey). I want to separate each grey polygon in multiple polygons, depending on the distance to R with different Buffers : - The red line is R ...
4
votes
3answers
170 views

How to compute the outline of multiple tracks?

I have multiple gps tracks with depth data gathered from the lake. The tracks are overlapping/intersecting. I want to get an outline polygon. I have a multi-line shp. I've tried to diffuse it in qgis ...
2
votes
1answer
93 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 ...
5
votes
2answers
436 views

How do the equations/algorithms behind buffering tools actually work?

I've been wondering how the equations/algorithms behind buffering tools actually work?
2
votes
3answers
133 views

Buffer Zone Algorithm

I use google maps, php, mysql, and I want to create a buffer zone in line among some points. Could someone tell me where can i find the algorithm (php library or the math in order to implement it) to ...
2
votes
1answer
250 views

IBufferConstruction create buffer with different geometry types (C# ArcObjects)

I am using the following method in C# public void ConstructBuffers ( IEnumGeometry pInputGeometries, double distance, IGeometry CollectionpOutputBuffers); to create buffers. In the ...
3
votes
0answers
78 views

ArcObjects Memory Leak with IWorkspaceEdit?

I have ArcGIS 10.1 installed. I have created a function for copying all of the features from one shapefile to another using IFeatureBuffer, now every time the function when it is called, it takes ...
4
votes
2answers
78 views

How to achieve “Flat-End” line buffers in QGIS?

I need to buffer a series of lines by 40m, however I only want the buffer to come off the sides and not off either end of the line. I know in ArcGIS there is a "flat-ends" tickbox that achieves ...
2
votes
1answer
152 views

How to creat multiple rings between two circular buffers?

I am working with mathematical-ecological modeling and I am also a new user of QGIS Software. First I am creating 3 circular buffers with same center (shape center) covering a region with roads (shape ...
4
votes
3answers
738 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 ...