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

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0
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0answers
40 views

Multiple buffer subtraction?

I've created two different buffers (1 mile and 3 miles) in ArcMap, I need to see how many people live within 1 and 3 miles. In other words, I need to subtract the bigger buffer from the smaller one. I ...
12
votes
1answer
11k views

Understanding QGIS buffer tool units?

I have been trying to figure this out for a couple weeks now and have had no luck getting the buffer tool to accept anything but degrees as units of measure. I have found lots of stuff saying the ...
2
votes
2answers
44 views

postgis How can I obtain directional buffer?

I have a geometry (polygon) which I want to extend with a buffer while testing on it in a where clause. The problem is that I would like the buffer to be only applied according to one or more ...
4
votes
1answer
98 views

Extracting cell size of Raster as value for buffering using ModelBuilder?

I am creating a model in ArcGIS ModelBuilder to buffer a line. I would like the buffer distance to be based on the cell size of a raster. The cell size may change depending upon which raster the user ...
1
vote
1answer
47 views

Point buffer not round - jagged circle like thing

Any ideas why running a point buffer (50 and 150 meters) would result in this shape? ArcGIS 10.2 - All projections match
0
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1answer
37 views

missing buffer values when using zonal statistics in ArcGis

I am using zonal statistics in ArcGis 10.2.2 to calculate the mean value of fire frequency within 1km buffers. However, I have noticed that this is not being calculated for all of my sites? There are ...
3
votes
2answers
173 views

Creating OUTSIDE_ONLY buffer around polygon using R?

I would like to create buffers in polygons, surrounding my original polygon. However, I want to keep only the "outside polygon", not include also original polygon. In Buffer in ArcGIS I can just set ...
3
votes
1answer
88 views

How to Change the buffer distance from degrees to meters in QGIS 2.14 Essen?

I am new to QGIS and the whole field of GIS in general. My project and all its layers are set to the CRS of EPSG:26913, NAD83/UTM zone 13N. I am trying to use the geoprocessing tool Buffer(s) on a ...
0
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0answers
23 views

Buffering with QGIS [duplicate]

I am using QGIS to do buffers for houses within 100 meters radius with each house being an index house to the rest. I expect to get several buffers since there are 1,470 houses with x,y coordinates in ...
1
vote
1answer
19 views

Print Composer Grid Coordinate Buffer

Is there a way to create buffer for grid coordinates in Print Composer? I prefer to add the grid co-ords inside the map but the coords are often overwritten by map data which makes them impossible to ...
1
vote
1answer
30 views

Correlating 3 data sets and extracting information from each in ArcGIS for Desktop?

I am currently trying to find a way to correlate 3 separate datasets as point shapefiles. I would like to import all three shapefiles, and apply a 5 metre buffer to each point. Then, for each point,...
8
votes
3answers
187 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 ...
1
vote
1answer
64 views

Creating a buffer in ArcMap…? [duplicate]

I need to create a buffer around a polygon. I know how to do this, but my problem is I need the buffer to be 250 feet to the south, east, and west, but 500 feet to the north. Is there any way to ...
11
votes
3answers
5k views

How can you tell if ArcCatalog Geoprocessing is still running?

Is there some other way other than the logs to check that ongoing geoprocessing is working correctly? I am running the Buffer tool with dissolve type ALL on ArcCatalog 10.1. I was expecting the the ...
0
votes
0answers
56 views

Call gdal_proximity() from R

I have a raster including eight land cover types (pixel values ranged from 1 to 8): > r class : RasterLayer dimensions : 9887, 30532, 301869884 (nrow, ncol, ncell) resolution : 10, 10 (...
2
votes
1answer
55 views

Cannot perform buffering loop with arcpy

I have 5 buffers to perform using 5 fields of a shapefile. I try to run it with the following code: Buffers = ['JF1','JF2','JF3','FF','FB'] env.workspace = "C:\Mydirectory\Myfile.shp" network = "C:\...
0
votes
0answers
39 views

Buffer widget with Esri JavaScript API (3.16) for ArcGIS Server

I want to create buffer widget, but my code doesn't work ( my code is blocked in this line : esriConfig.defaults.geometryService.buffer(params, showBuffer); This is my code : define([ 'dojo/_base/...
1
vote
1answer
12 views

Will symbol size impact buffer size?

I'm using ArcMap 10.1. I want to create buffers that represent CO2 equivalent from landfills. I used graduated symbols to label each landfill site, based on amount on incoming waste per year. Will ...
4
votes
2answers
615 views

Getting buffer wizard-like speed in Python (vs using MultipleRingBuffer_analysis)

I've got a script that takes a single input polygon feature, throws 10 buffers around it at tenths of a specified input distance, and then symbolises the output based on an existing layer file. ...
2
votes
1answer
43 views

How can I get rid of feature points within a buffer?

So I've created my buffer, 10 m around surrounding streets, now I need to remove all trees (points) that are within that buffer but I'm having trouble doing so! I've tried clipping but I guess my ...
0
votes
0answers
41 views

Buffer FID assignment using arcpy

When buffer analysis is performed on a polygon what determines the order of assignment for FID? This came up with the following: arcpy.Buffer_analysis(inFC, outFC_50, "50 Meters") arcpy....
2
votes
1answer
257 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 ...
1
vote
1answer
43 views

Area of influence with CartoDB

I am working on a city transport map, and for fun (and practice) I try to make an area of influence of transport station. But, whatever I try, something gets wrong. So two questions. 1 - How can I ...
1
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0answers
71 views

Find distance from points along lines [closed]

I have two layers, one is a point layer of schools and another is a polyline layer of streets. The end goal is to create a buffer along the lines that is 20 feet from the centerline that goes 1 mile ...
0
votes
1answer
30 views

Arcpy buff does not provide the output attribute “Shape_Area”

I made a loop to buffer several times a certain network using arcpy. What I noticed is that when I run the code, the output files do not have the attribute fields "Shape_Area" and "Shape_Length" that ...
1
vote
1answer
24 views

ArcGIS: segmenting buffer based on polygon corners

I have hundreds of square polygons which I've created a single continuous buffer around the polygons. What I'd like to try and do is try and break this buffer down into segments based on the corners ...
2
votes
1answer
89 views

How do you create a buffer for a specific feature in QGIS?

Fairly competent ArcGIS user here, very new to QGIS. What I am trying to do is create a one-mile buffer around the highlighted parcel in QGIS 2.14 (from a .shp). Seemed straightforward enough: ...
0
votes
2answers
29 views

What CRS to use when creating buffer all over the world in QGIS

I trying to create buffers (50km) around many points all over the world (airport locations) in QGIS. I will then overlay these buffers with a world-wide raster dataset so I can extract information ...
6
votes
4answers
2k views

Improving upon ArcGIS Buffer/Dissolve performance?

I'm wondering if anyone else has experienced significant performance penalties when using the ArcGIS buffer function with the 'dissolve' option on point features. My dataset is a shapefile of 260 ...
1
vote
0answers
16 views

Alternative quicker workflows to the standard Buffer tool in ArcGIS for Desktop 10.3 [duplicate]

I have a point layer representing oil and gas exploration wells containing 500,000 features and have created a 50km dissolved buffer polygon to use in another workflow: The completion time for the ...
0
votes
0answers
19 views

Finding measuring units [duplicate]

Every time I perform the geoprocessing tools buffer or intersect, my layer gains two more attribute columns, named "Shape_Leng" and "Shape_Area". How can I know in which measuring units are these ...
5
votes
6answers
2k views

Creating multiple buffers using QGIS?

I'm new to QGIS and have no programming skills. Is there an easy/uncomplicated way to create multiple buffers around a line feature?
2
votes
0answers
34 views

How do I report area statistics for land cover classes at equal sections along a river?

I have a river outlined: Using QGIS, the Semi-automatic Classification plugin and Landsat 8 images I classified the habitats (blue=water, yellow=sand/rock...,green=vegetation/algae) inside the river ...
3
votes
2answers
94 views

How to generate a buffer outside polygons having a given pixel value?

For example, I would like to build a 20-m buffer (represented in yellow in the image below) outside polygons having a value of 2 (represented in green) and to assign the value of 3 to buffer cells. ...
3
votes
3answers
2k views

ERROR 000800 when trying to snap points layer to line or buffer layer

I am very new to GIS, so go easy on me. I am using ArcCatalog 10.0 and trying to snap a set of points to another layer that has roads in it. The points represent 10th miles along the road. Here are ...
3
votes
1answer
92 views

Making multiple buffer, one with field values, one with a fixed value

I use ArcGIS 10.2.2 Basic. I have a point shape file with a field called buffer with different values, depending of what kind of type the point is. Some of these points also need an extra buffer ...
0
votes
1answer
248 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
38 views

Projecting a layer to another CRS changes the actual distance

I'm trying to generate a buffer around some 1,000 points. My layer is on WGS-84, so I understand I need to save the layer with a different CRS that works with meters (Israeli one - ITM). However, when ...
4
votes
2answers
749 views

Need Projection Help to Buffer Lines in QGIS

I need to create buffers (1km, 3km, and 5km) around the rivers of this shapefile from NOAA, something I remember being relatively simple in my GIS class. However no matter what I do the buffers I ...
1
vote
0answers
26 views

How can you define distance in QGIS Multiple ring buffer? [duplicate]

I am trying to create multiple buffers around point data. I need to crate buffers of 10 miles, but I cannot find a way to define this. I have tried using both the multiring buffer plugin and the multi-...
0
votes
0answers
33 views

How to extract data from multi-ring buffers?

I am using ArcGIS with full extensions. I have a Uni project which requires me to extract the towns/cities that lie within buffers of landfill sites. I have managed to extract the total population ...
2
votes
2answers
189 views

QGIS Layer Style - Adding intensity/color if elements overlay

I have a layer with thousands of points. I have been asked to represent this layer in way that can be easily seen the level of concentration of points in the layer. So when there is much point ...
4
votes
5answers
176 views

How to visualize point accuracy with buffers in QGIS?

I have a CSV file that contains 3 columns - Lat, Long, and Accuracy. The Lat and Long fields contain point data in decimal format. The Accuracy fields contain a numeric values that indicate the ...
1
vote
1answer
103 views

Merge and dissolve overlapping polygons?

I have a situation in which I have both network buffers and circular buffers around the same points (as separate feature classes), and I want to merge the buffers and dissolve into one polygon for ...
1
vote
1answer
347 views

Sum of values within a buffer polygon

I need to do the following in QGIS and hope so much anyone could help. I have a vector layer with points. Each point represents a firm with the number of employees in the attribute table. I want to ...
0
votes
0answers
8 views

Display 3D collada files and shapefiles [duplicate]

How do I display 3D Collada (or Multipatch) building model along with some 3D buffer shapefiles using python? I was using arcpy for buffering, but arcpy does not have the feature to add shapefiles ...
0
votes
1answer
91 views

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
votes
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?
3
votes
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?
2
votes
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 ...