A region enclosing a point, line, or polygon at a specified distance.
3
votes
2answers
59 views
Buffer of different radius - Intersect with raster
I have a polygon shape with buffers. However, the buffers are of different size from 4m radius to 15m. In total I have 7 different buffers.
I have a landcover raster and I would like to extract ...
3
votes
1answer
148 views
FME remove polygon holes of under size ### sqft and chop the ends off
Quetion #1
I have a wokspace that takes the latest version of my data and creates buffers and then merges those to one polygon.
When 2 buffer polygons are near each other and close to create a hole. I ...
3
votes
1answer
540 views
Buffer Selected Line Segments Using ArcGIS 10 or Python
I haven't quite found a solution for buffering selected line segments of a road network without extporting the selected line segments to a new file and then buffering. I want to avoid creating a ...
3
votes
3answers
3k views
How to create a polygon buffer from a line?
I have connected a series of points into a line in ArcMap 10 with the Points to Line tool in the ArcToolbox.
The line is, of course, in its own layer, and I added a 5 meter buffer around the line. It ...
3
votes
1answer
451 views
How to create a polygon (fixed width buffer) around a polygon in QGIS?
I have created a polygon in QGIS (in this case it describes a country's maritime baseline).
I need to create a second polygon whose boundary is a fixed distance from the original polygon. (in this ...
3
votes
1answer
403 views
How to obtain statistics within a Buffer/Catchment in MapInfo?
I need to calculate the population statistics within a 10 minute drivetime catchment from a point and within 1 Km Buffer from a point in MapInfo, how can I do that can someone please elaborate? I have ...
3
votes
1answer
225 views
ArcMap: extracting overlapped buffers
I have a set of points in ArcMap which I create a buffer for each point. Then I use intersect to extract the overlapping buffers. The result is something like this:
The lighter color are the ...
3
votes
1answer
438 views
datum conflict when creating buffer in arcgis 10
A buffer I created successfully executed, but I received the following message: "WARNING 000632: Datum conflict between map and output." How can I fix this?
3
votes
1answer
139 views
How to Get the Three Nearest Points to an Object (different layer)?
I have two point shapefiles and I want for each point in the 1st shapefile to get the 3 closest (based on air distance) points from the 2nd shapefile.
If possible, it would be great to have each of ...
3
votes
1answer
192 views
How to calculate buffer surface that falls within another layer's borders
The image below shows what two selected layers. One contains a series of borders, and the other a series of buffers.
I am trying to obtain the buffered surface within each of the borders in the ...
3
votes
2answers
808 views
ArcGIS 10: How to clip point buffer to features in another layer?
I'm on a steep learnig curve here, so aplogies if my question is a one-banana problem.
In ArcGIS 10 I have a contour layer that was generated from an ESR ASCII raster file (batyhmetry of the South ...
3
votes
1answer
276 views
QGIS inside buffer with attributes
Fairly similar to
ArcGIS: inside buffer with attributes?
but in QGIS.
It would be convenient if the buffer layer inherited the attributes of the parent. Also I am doing inside buffers (-ve distance ...
3
votes
2answers
1k views
find location details within circle buffer
Wondering how would i go about getting this to work.
I have a table with location data (lat, long, homevalue) in sql server 2008. Given a lat long say (32.113, -81.3225), i want to draw a 50 mile ...
2
votes
2answers
378 views
Buffer in ArcGIS v. ArcINFO 9.3
I have ArcGIS 9.3 and my question is regarding Buffering. Is that only allowed in ArcINFO or is there a way to use a buffer in ArcGIS?
2
votes
2answers
1k views
Creating a Polyline Buffer in OpenLayers
I was wondering if there was a way to create a buffer around a polyline feature in OpenLayers. I have created a tool that allows the user to draw a circle buffer zone of whatever size and style they ...
2
votes
2answers
512 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 ...
2
votes
1answer
125 views
Query for segments at same place and time in PostGIS
A newbie-question:
I've imported the segments of several GPX-Tracks in a PostGIS-Table. Now I'm looking for a query that returns all segments that:
are spatially overlapping (within a specific ...
2
votes
3answers
739 views
How do i identify features within a buffer?
I have a point shapefile that identifies the location of incinerators in England and an output area classification shapefile. I have created a buffer for all the points in the shapefile because i want ...
2
votes
1answer
1k views
ArcGIS10 - How do I dissolve two different buffers together so they are not overlapping?
I am trying to find out how many registered sex offenders live within 2,000 feet of a school/park in a specific county. The park buffer and school buffer are dissolved but not together. I am also ...
2
votes
1answer
154 views
Multiple ring buffer on point-shape error
I need to calculate multiple ring-buffers, but every time I try, arcgis produces a failure:
Executing (Multiple Ring Buffer): MultipleRingBuffer Y:\GIS\RDY\clip\sn_clip.shp ...
2
votes
1answer
181 views
Geotools // buffer using different CRS
I'm currently having a problem with Geotools.
I try to generate a buffer (in meter using Lambert 72) on a map that has WGS84 as it's coordinatesystem.
(problem is a bit like this one: ...
2
votes
1answer
112 views
Overlapping buffers - Doublecount points that fall within 2 or more buffers
I want to analyze crime around certain types of stores in a city. I made buffers around the stores and I need to a) select and extract crimes that occurred within those buffers, and b) join the two ...
2
votes
1answer
138 views
how to extract overlap from non-dissolved buffer zones in qgis 1.7.4
I have a shapefile with the inventory of all limetree in a region. I made a buffer around each tree. So, the place where buffers overlap each other is the best place to put beehives.
Is there a way ...
2
votes
2answers
139 views
After two buffers operations (+/-), why is the result file bigger than the original?
First file ( .shp ) had 1000KB, after 2buffers ( buffers on polygon, 1st buffer +100,
2nd buffer -100 ( small things near polygon should be removed ))
in quantum gis file grown to 1500KB, and after ...
2
votes
3answers
710 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 ...
2
votes
2answers
37 views
How to calculate land cover inside the buffer zones?
In one Shape file I have created 1200 buffer zones Around coordinates. I created a field and calculated the buffer zones area in hectares.
Then I clipped different landcover layers to the buffer ...
2
votes
1answer
29 views
Clipping a buffer from network analyst shapefile to a base shapefile
I have exported my polygon shapefile which I got after I ran my Network Analyst into a shapefile. It has 6 buffer zones (delimited by time in increments of 10 minutes). When I check the attribute ...
2
votes
1answer
53 views
How to create a buffer zone for notification
I am new to PostGIS.
I am working on a project, for this i need to find out abutter notification that generates a list of properties within the buffer zone from the selected property with user input ...
2
votes
1answer
142 views
Python add-in won't buffer from output layer
I have a simple add-in script for Arcmap 10.1 to create a toolbar, select a layer from a drop down list of the current layers in the project, buffer that layer four-miles, then use the resulting ...
2
votes
1answer
737 views
ArcGIS Server js api - buffer query against polygons and not points
I'm using the below sample and i want to change the queried results from points to polygons
http://help.arcgis.com/en/webapi/jav...ry_buffer.html
Probably very simple but cant get my head around ...
2
votes
0answers
186 views
Creating a Geodesic Polyline Buffer in OpenLayers
I have a feeling that the answer is going to be 'You can't do that without some very complex coding' but I thought I'd go for it anyway.
I recently asked a question on how to create a Polyline Buffer ...
2
votes
0answers
261 views
Proximity Toolset Questions - Description, Examples of Usage, and Limitations
I was wondering if you could help me answer a few questions about the Proximity Toolset. I have been given the task of describing each tool in laymen terms, the typical usage of each tool, and most ...
1
vote
3answers
159 views
In ArcMap, what is the difference between Copy Parallel and Buffer?
To build an offset of a linear feature in ArcMap, what is the difference between Copy Parallel and Buffer? In terms of the resulting features and their linear differences from the source linear ...
1
vote
1answer
193 views
how can i use flat buffer for polygon?
i'd like to create flat buffer in a polygon shapefile .i try to use buffer tool in ArcGIS 9.3 but i could'nt select "flat" option in endtype combobox because the input feature is polygon .how can i ...
1
vote
1answer
50 views
Need to make a buffer around a part of a feature, keeping other features attached
Basic problem:
I have two layers, a layer containing river basin outlines and a layer of wetland outlines and types.
I need to make a buffer around one river basin, and then create 100 random points ...
1
vote
1answer
385 views
create buffer around locator-derived point
I am trying to create a buffer around a point derived from a locator search, using this example:
http://help.arcgis.com/en/webapi/javascript/arcgis/help/jssamples_start.htm
..but I am getting no ...
1
vote
2answers
61 views
Plotting a circle on a Web map to view the resulting coverage over a central location
Not exactly a GIS question but I hope no one will mind. Does anyone know of a website (something equivalent to Google Map) where you can indicate a location, give a radius and you can view the ...
1
vote
1answer
213 views
Best practices to minimize error when buffering unprojected data
If I buffer hundreds of unprojected WGS84 points across the US by say, 3 miles, will I get accurate areas returned (3 x pi x r) for each of the circles created? I suspect not. If not, what would be ...
1
vote
2answers
524 views
Error adding buffer to polyline in ArcMap 10
As the next step to what I did in this previous question, I would like to add a buffer to a polyline, with 5 meters on either side.
I tried adding buffer to two versions of the line, one in ...
1
vote
1answer
42 views
How do I convert MultiLines to MultiPolygons using Postgis
In postgis I'm using the following query to buffer lines to polygons:
UPDATE rivers
SET poly = ST_Multi(ST_Buffer(lines, 0.01))
where id = 1;
The column 'lines' is a MultiLine and the column ...
1
vote
2answers
184 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 ...
1
vote
1answer
330 views
Converting distance between nautical miles and degrees
This is such a basic question that I'm kinda of embarassed. Here is the situation:
We have a certain funcionality developed that:
Will check for a tolerance value (this input is given by the user ...
1
vote
1answer
70 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
1answer
47 views
problem of buffering a point on large areas with a projected coordinate system
could someone clear this up for me please. i remember reading an article not long ago on the web about the problems associated with buffering points on a globe due to the fact that a globe uses angles ...
1
vote
1answer
54 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
vote
1answer
131 views
Create buffer-lines in QGIS alongside Vector lines
I am currently doing a map of a farm, to see which roads needs to be repaired.
Those roads are either one sided fenced, on both sides fenced or not fenced at all. I want to make buffer lines around ...
1
vote
1answer
140 views
How to fit a polygon to a “best buffer” about a reference geometry in it?
If I have a polygonal geometry gbase, like a street (a rectangular strip), and a reference geometry gref, like a central line of gbase. The question is what is the function (here named BestBuffer) ...
1
vote
1answer
343 views
How to use buffers to estimate the attribute data for a given polygon?
I have two layers: point and a polygon.
The point layer has lat/long and I have created buffers of a 1/4 mile.
The polygon layer has data such as age and income.
Is there a plug-in that can ...
1
vote
2answers
770 views
“Item not found in this collection” when trying to set the Shape on IFeatureBuffer
I'm working on code to open a 3rd party data file and convert it into a collection of features in a custom layer based on FeatureLayer. I have had no issue importing the data itself (nodal data for ...
1
vote
0answers
13 views
Geoserver not buffering external graphic in PointSymbolizer
We've got some Point data we're displaying in a WMS layer using geoserver 2.2 (same problem on 2.3.1). We style it with the following SLD
<Rule>
<PointSymbolizer>
<Graphic>
...
