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

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76 views

Increasing size of buffer based on field in ArcGIS for Desktop?

I am using vector data from a CSV file and ArcGIS. I can use the Geoprocssing tool Buffer just fine, I use these parameters and ArcGIS does produce what I want, however it is way to small (my ...
3
votes
3answers
75 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 ...
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1answer
35 views

Help using ST_Buffer for points

So I am trying to do a where clause on a select and my code is ST_Within(shape::GEOMETRY, ST_Buffer(ST_GeogFromText('@Value(_location)'), 5, 'endcap=round join=round') I am trying to buffer the ...
3
votes
1answer
170 views

Speeding up extraction time of proportion of land cover types in buffer from raster using R?

I would like to extract land cover data in a buffer of 10 km around objects of class SpatialLines and calculate proportion of each land cover type. So, I used the function extract (package raster). I ...
3
votes
2answers
114 views

Extracting Overlapping Parts of Single Polygon Layer using QGIS?

I have a single polygon layer with over 200 buffers with a lot of overlapping areas. I want to use QGIS to create a new layer representing the overlap. I've seen several questions that are similar, ...
2
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1answer
64 views

How to calculate proportion of a line segment around a point?

I am looking at certain variables surrounding points that represent Sea otter raft sites. The coast line surrounding the points is broken into unit lines (Essentially a polyline with attributes for ...
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0answers
50 views

Buffers not showing on map but viewable in Table of Contents of ArcMap?

I am completing Assignment 9-2 in GIS Tutorial ArcGIS 10.1 Book. I am suppose to set the map to a UTM for California (either 10N or 11N). I am then suppose to add a California Counties layer and ...
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0answers
41 views

ArcPy to select the location of two layers

I am very new at using python for geoprocessing I have a buffer layer 1 with a distance of 5 from each point I have a buffer layer 2 with a distance of 1 away from each polyline How do I show all ...
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1answer
264 views

Why does Buffering in QGIS fail with this error: Argument 1 has unexpected type 'NoneType'?

I get this error on both 2.10 & 2.12 on two different machines running Ubuntu 14.04 with Python 2.7.6. When trying to run the fixed-distance buffer on a shapefile with polylines I get the ...
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1answer
674 views

How to add a buffer on a point in Open Layers 3

I am trying to add a buffer around some points shown on a map. I have tried to do something similar back in the days of OL2 and I remember it was not straight forward. Is there a simple way to do ...
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0answers
36 views

GeometryEngine Offset or GeodesicBuffer - to get minimal corners.net

We have a a polygon which might have between 8 and 20 points, which we need to draw a boundary around, that is at least 1km around at all points. The restriction is that we can't increase the the ...
2
votes
1answer
102 views

Grouping points using grouping analysis to look at raster characteristics within overlapping buffers?

I want to extract averages from raster data that fall within buffer zones around a village point. The problem is that the villages are pretty close together in some places and I need to come up with ...
3
votes
2answers
90 views

Is there a way to have a 'live' buffer in QGIS

I use QGIS (2.10.1) to create buffers around polygons. I often create a series of buffers, and later need to edit the underlying polygons. It is frustrating to start from scratch in re-create ...
1
vote
2answers
105 views

How to Merge, Buffer, and then Intersect multiple features based off of the Buffer feature in ModelBuilder

I have created what I thought to be a simple ModelBuilder model and the final output (.shp format) is always an empty. As you will see in the ModelBuilder image below: Merged 3 track logs now called ...
2
votes
1answer
24 views

Determining Wet Well Service Area using ArcGIS for Desktop?

I am using ArcMap 10.1 I have a wet well with a known ground elevation. I am trying to determine the service area of that area based on the assumptions that the wet well is 20 feet deep and that my ...
2
votes
1answer
222 views

Understanding target layer and source layer in Select By Location of ArcGIS for Desktop?

I have a lab assignment that i would need some help with. I have a 25km buffer that's in a circle. Within that i am supposed to make a map were the berries that people can pick are. The assignment is ...
4
votes
1answer
143 views

Create uneven, different diameter ellipse around point in QGIS 2.10

I am trying to make an attribute to show the uneven spread of the crown of a tree using the four cardinal points. I can use a buffer to show one feature, in this case a root protection area. But I ...
2
votes
3answers
131 views

Buffer zone outside objects cluster using FME

I am doing a buffer analysis around some roads. The buffer is 1000 meters and is dissolved. This gives me a buffer which covers the roads as well as the distance outwards. It looks like this: ...
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0answers
61 views

Finding distance and angle to points in point buffer, from center of buffer?

I have a number of buffer circles that contains some interesting points (the green points in the picture). I would like to find out the distance and angle from each buffer center (that I have in the ...
2
votes
1answer
35 views

Can you map distance bands?

I know you can calculate using distance bands, but can you actually illustrate them on the map in ArcGIS? I have a presentation next week, and it would be a useful illustration for me to use.
1
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1answer
27 views

arcpy.mapping exportPDF with ONLY one buffer ring turned on for associated iterated feature

I am exporting X number of maps iterating through a point feature class. Each feature class has a buffer drawn around them. I know how to export a PDF for each feature class at a fixed scale (if I ...
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0answers
68 views

How to calculate zonal statistics of buffer zone with minimum distortion

I want to create 50km buffers around a large set of polylines that have a global extent. My objective is to calculate average raster values within each buffer zone. The matter of confusion: I want ...
2
votes
2answers
85 views

Is there a QGIS equivalent of inline variable substitution in ArcGIS?

I am working through some analysis in QGIS and need to iterate through a layer of points and buffer each point and then export to a new layer. I want the new layer names to have the values from a ...
0
votes
1answer
147 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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0answers
26 views

Change parameters of buffer in editor toolbar, not in the actual buffer tool

I have many areas that need to created as buffers around lines, but they need to be various sizes and an on-going project where the lines will need to be drawn in, adjusted, then buffered. The most ...
2
votes
1answer
358 views

Create Circle and Marker on Click in OpenLayers

I want to create a marker and buffer around it with a given radius on map click event. Marker is displayed successfully but the polygon doesn't display. I guess there is problem in projection setting. ...
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2answers
151 views

Changing units of buffer

Desktop 10.3.1 GCS: WGS 1984 Created a Buffer of points based on a pre-specified radius from the points attribute table. It appears all of the buffers were created with a decimal degree unit of ...
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1answer
254 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 ...
2
votes
0answers
206 views

Can we create buffer analysis using python in qgis?

Can we create a buffer of distance 0.004 using python in qgis. I tried this link, but it isn't working for python in qgis 2.10.1-Pisa. The above is the diagram of buffer I am asking. It's located ...
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0answers
165 views

Buffering a polyline

I'm attemping to buffer a polyline that the user has drawn on a map (Google maps and OSM map). The user specifies a distance in metres and a polygon should be drawn around the polyline representing ...
3
votes
2answers
193 views

Erasing buffer within another buffer without erasing overlapping buffers using ArcGIS for Desktop?

I'm not an ArcGis pro, so I need help on this one, and I have tried searching for answers. I am using ArcMap 10.2.2. I don't know how to use python. I have 6km and 12km buffers around the sites ...
0
votes
1answer
144 views

How to extend a (river water level) raster, transfering its values to the added area?

Exploring the raster tools in QGIS and related software, I found raster buffer functions to surround existing rasters. The values of the raster buffer are restricted to be distances from the interior ...
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2answers
92 views

Select points located within Multi Ring Buffer

I have two point datasets, 1 showing the location of road accidents, the other showing the location of traffic intersections. I have created a Multi Ring Buffer at 25m intervals around the traffic ...
0
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1answer
50 views

How to use an array for buffer

I want to to use an array to create 3 buffer files with different buffer distances. The code should produce 3 buffer files in one step. Additionally, the code below runs already after using an ArcGIS ...
2
votes
1answer
274 views

Create Centerlines of a Polygon Buffer Feature, ArcGIS 10.3

I have seen another method for this to create centerlines, but that involved splitting the line and deleting the line closures. This is a huge network and the time involved in that would be impossible....
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0answers
14 views

Representation of streets/highways Geometry

I have Navtech data which provides center-lines with geometric data of the roads. The most important data for me is that it gives me the width of the road as well as the number of lanes for most of ...
8
votes
3answers
178 views

Creating buffer only in specific direction using ArcGIS for Desktop?

I am trying to create a buffer for several polygons in a south-western orientation. As far as I know, this is not possible using the buffer tool (I use ArcGIS 10.3). I could do it manually but for ...
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0answers
204 views

Drawing Zoning Setback Lines

What would be the process for drawing zoning setback lines for a property parcel polygon? I'm looking for a software agnostic solution - just a walk through of the general steps with enough detail ...
1
vote
1answer
43 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 ...
1
vote
2answers
262 views

Displaying Buffer overlap in ArcGIS Pro with Intersect

I have created some buffers around some points in ArcGIS Pro, and I am wanting to recognize the area of the buffers that overlap with another buffer within the same layer with a different color. How ...
0
votes
1answer
38 views

Merging buffers together with no fill colour? [closed]

I am a bit of a novice with GIS. I have created several 500m buffer zones around streets in GIS. I ultimately want a combined buffer so only the outside line that measures 500m away from all of these ...
0
votes
1answer
163 views

Adding pixel value data from a raster layer to a number of buffer polygons ArcGIS

I have created a layer of polygons with buffers around my points of interest, all of the same size, in Arc GIS. I also have a raster layer of nighttime lights with pixel values between 0 and 63 ...
2
votes
2answers
78 views

How do I create proportionate inner buffers which reduce in size based on a percentage, to a specific point

I am working in ArcGIS and I have a 75 basin polygons and a point feature (called origin point) within each polygon. (Not necessarily in the centre of the polygons). I want to create 100 polygons ...
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0answers
65 views

Creating Dynamic 3D Buffers in ArcGIS Pro

I am currently using ArcGIS Pro to model WiFi router signal distribution and I would like to use buffers to display them in a 3D format. I have used the Buffers 3D tool to create spherical buffers, ...
1
vote
1answer
195 views

Variable width buffers depending on surface area (Arcmap 10.1)

I know this is a pretty basic question but I couldn't find the answer myself, so here I go: I need variable buffer widths depending on the surface area of the polygon (city) size. For example: A ...
2
votes
0answers
36 views

Buffers Not Overlapping correctly in ArcGIS for Desktop?

I have two records in one shapefile that I am trying to create two separate buffers around. When I go to Geoprocessing - Buffer I choose the desired shapefile, set the desired buffer distance, make ...
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0answers
21 views

Problem with passing ranks to different buffers

This issue is really troublesome.i have a SpatialPointsDataFrame which refers to a city.I needed to perform a join with a dbf in order to attach the population column which i did thanks to a couple of ...
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0answers
41 views

Parcel Buffer - Property Setbacks [closed]

I am trying to model property line setbacks. In this case: 25 ft from front and back of property, 10 ft from one side and 8 ft from the other. Tried averaging the total set back distance 68/4 = 17 ft ...
3
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0answers
80 views

Drawing “proportional” buffer using QGIS or GRASS?

I'm working on aquatic vegetation and have a shapefile representing floating vegetation in a lake. By some studies, we know that submerged vegetation extends for a certain extension based on floating ...
5
votes
2answers
306 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 ...