Software for which the original source code is made freely available and may be redistributed with or without modification.
10
votes
3answers
1k views
Is there a Python Lib for requesting WMS/WFS and saving as image/PDF?
i am wondering whether there's Python open-source GIS lib which has APIs to support call WMS/WFS from another GIS server (e.g., GeoServer) and then save the response data(WMS Basemap and WFS layer) as ...
14
votes
6answers
821 views
Creating simple image from vector data
Can anyone suggest a quick (and preferably open source) way to create an image from a shapefile. For example, I have a shapefile containing parcel boundaries, I want to create a png file depicting ...
12
votes
4answers
655 views
Python module to delete SHP features (without Desktop GIS installed)
I have a piece of software (not Arc) that runs nightly on a non-production machine which updates shapefile features from an external database. Periodically I would like to delete all of the features ...
23
votes
5answers
3k views
Comparison of the different open source GIS servers
I currently know the following open source GIS servers:
Geoserver: java based, vector and bitmap support, also supports. Is now on par with mapserver (performance-wise).
mapserver: c/c++, used to be ...
8
votes
5answers
543 views
Looking for a Metadata Editor
Looking for a free open source metadata editor for the development of an enterprise database. It will mostly be used for documenting shapefiles and GeoTIFFs. Hoping that it will be an intuitive ...
4
votes
2answers
2k views
How to create a WMS Service to display a geo-reference image
I currently have little experience in the opensource area and I'm guessing this is where I need to go if I want to create a WMS Service without needing ArcGIS Server. Basically my goal is to take a ...
8
votes
1answer
295 views
What options are available for free Web Processing Service (WPS) client?
A number of products seem to be implementing the server side of the OGC Web Processing Service (WPS 1.0.0) and these are listed here.
However, for the client side there are fewer options.
Has ...
7
votes
3answers
498 views
How to script shapefile editing with open source tools?
I would really like not to disturb anybody and find my answer by a Google search, but I don't really know where to start.
I have a .shp vector layer with several points on streets, each having a list ...
5
votes
1answer
337 views
Is there an open source tool to planarize graphs?
I read about the planarize function in ArcGIS, which seem to do exactly what I want. Is there a similar feature in QGIS or another free tool?
I have a shapefile with various shapes intersecting each ...
3
votes
1answer
113 views
Are there any alternatives to ArcGIS Locator Report?
I'm a pretty new GIS programmer and I've found ArcGIS/Arcpy to be extremely unstable. I'm trying to run a Locator Report in arcpy with no success.
I'm wondering if there are any other alternatives? ...
3
votes
3answers
167 views
What FOSS GIS has the option to link attribute tables to rasters
In ArcGIS rasters can have attribute tables. What FOSS GIS offers a similar option?
5
votes
2answers
344 views
select by attribute on shapefiles with open-source python modules
I usually use ArcGis 9.3.1, but when running a python script that includes Select_by_attribute (from gp), the script runs very very slowly. Is there a way I can perform a select-by-attribute on a ...
8
votes
3answers
2k views
Land Cover Feature Extraction from Satellite Imagery
I'm interested in a low-cost or open source solution for creating land cover GIS layers that utilize both spectral and textural extraction algorithms. I have used PCI Geomatica, ENVI, and Feature ...
10
votes
4answers
512 views
Suggestions for simple mapping platform for alumni web site
I'm working on a proof of concept alumni site with a WordPress backend. I want to have a very simple map that shows where alumni are living. I'm thinking something like the Bing API or a simple open ...
7
votes
4answers
770 views
Spatial query tool for laymen
I know nothing about GIS, but I have what I think is a GIS problem. From spending a few hours googling my problem, I think what I need to do is perform a spatial query, but I'm not sure how to go ...
6
votes
1answer
506 views
FOSS method to split raster into smaller chunks
I have a raster (USGS DEM actually) and I need to split it up into smaller chunks like the image below shows. That was accomplished in ArcGIS 10.0 using the Split Raster tool. I would like a FOSS ...
5
votes
2answers
716 views
Quickly create contour polygons from cost points using OSS for web app
This is related to a previous question I've asked:
Create filled contour map with GRASS
I've created a point layer using OpenStreetMap data and pgRouting's driving_distance() function, where the ...
5
votes
3answers
808 views
How to interpret GRASS v.kernel results?
GRASS manual reads:
v.kernel - Generates a raster density map from vector points data using a moving 2D isotropic Gaussian kernel ...
Ok, but how do I interpret the results? I understand that ...
13
votes
9answers
683 views
Open Source Training Materials
This recent question made me wonder if there are any open source training materials for GIS.
By this I don't mean training specifically for open source software - of which I know there are some - ...
5
votes
3answers
2k views
Free MobileGIS like ArcPAD
I'm looking for open-source program like ArcPAD.
I have read all questions and answers, but i find nothing. I need the program for PDA (Dell axim x51v + GPS modul) and I want mapping points (trees or ...
2
votes
3answers
341 views
Looking for map calibration software and city database
I'm in need of a mapping software which, given a map, lets you calibrate it (choose which geographic coordinates project to which pixels on the map image) and then given a database of cities, you can ...
10
votes
2answers
2k views
How do dissolve polygons from shapefile using open source tools?
In my current project I'm visualizing data on a map representing some values for each administrative areas of a country. I'm given a shapefile of this country, which I'm converting to GeoJSON for use ...
1
vote
1answer
797 views
How to connect GeoServer with Java to a PostGIS/PostGres database?
I am having trouble using GeoServer to perform a shortest path analysis between two network points. My question is about connecting GeoServer with Java to a PostGIS/PostGres database.
I know that in ...
5
votes
1answer
488 views
Memory leak in ArcGIS aggregate points/buffer/Addfield/cursor
I am starting to have concerns about the ability of ArcGIS 10 to fulfill a deliverable of mine. It got me to wondering what exactly else there is, that can perform similar functionality?
ET ...
5
votes
3answers
489 views
Looking for a .NET Dijkstra component using Shapefile
I'm totally new to stackexchange and i'm in this beautiful informative place for one problem.
I'm a .net programmer and i need to write a program that reads a shapefile and performs routing operation. ...
7
votes
1answer
511 views
Visual Studio Lightswitch and spatial data
I'm looking for a way to handle spatial data (for instance geography data type in SQL Server 2008) in Visual Studio Lightswitch 2011.
Preferably with an extension that can show data on a map. So far ...
2
votes
1answer
188 views
Get Cell Value Webservice for ArcGIS Raster (LiDAR) without using ArcGIS
I want to expose the getCellValue function on Lidar Data, as a web service. But I don't have access to ArcGIS (server or desktop).
What options do I have to fetch cell value, given lat lon, from a ...
21
votes
4answers
1k views
Are there open source alternatives to ArcCatalog?
I'm looking for open source alternatives to ArcCatalog. The software should run on both Win and Linux and support the usual file formats (shp, kml, gml, ...) and databases (especially PostGIS, ...
4
votes
1answer
804 views
How to create a polygon from other polygon boundaries?
I want to write an algorithm that creates a polygon inside a hole made by a set of other polygons. It's something like a flood fill and it's like the "boundary" tool in Autocad.
The image shows an ...
1
vote
1answer
163 views
Is Orbit EOS Lite Free GIS Map Server an OpenSource software?
I'm writing an essay about web mapping software and I can't find out is Orbit EOS Lite Free GIS Map Server an OpenSource software or not? Also, I would be thankful if someone gives me some links with ...
3
votes
4answers
313 views
Creating Polys and Displaying geo points within. ( Where to start? ) [closed]
Hey all,
I'm somewhat of a newb when it comes to creating mapping solutions. I've stayed on a pretty high level playing with openlayers and pulling data from various webservices.
The first part of ...
15
votes
3answers
2k views
Is there a decent open source map-editor?
I would like to have an open source map editor for drawing a city map? I don't want to use OpenStreetMap. It will be a custom map project.
I don't need an advanced GIS system, but a simple ...
12
votes
3answers
644 views
Open Source Map Composing Tool
Are there any open source tools which can be used for map composing, preferably GUI based. I use Quantum GIS sparingly but I am interested to know if there are others. The tool must be able to read ...
2
votes
1answer
321 views
Scripting in GRASS
Can anyone suggest me web-links to learn scripting in GRASS GIS (its utilities, examples etc.) other than those available in GRASS official Wiki/Sites?
14
votes
2answers
629 views
How to detect roads from satellite images?
OpenStreetMap has announced a Bing API to detect roads. I want to know what is the theory behind road detection and if there is any open source tool that do that.
5
votes
2answers
264 views
How to deal with multitype data sources in QGIS?
Today I was trying to import a DXF to Qgis, the result is that qgis displays everything LINES and POINTS but it only displays options for the POINT objects.
When I try to export to a shapefile, it ...
1
vote
2answers
524 views
accessing mapinfo data without using mapinfo api
I need to be able to access various mapinfo layers but without using the mapinfo api.
I have found that I can convert the mapinfo layers to an access database to get the attribution and I can use ...
9
votes
4answers
772 views
Are there any open source tools to detect and fill sinks on a DEM?
Are there any open source or inexpensive tools to detect and fill sinks on a DEM? ESRI Spatial Analyst is just out of my price range.
6
votes
1answer
552 views
Spatial joins in OGR SQL
I have seen that OGR supports it's own form of SQL, I was wondering if it's possible to do spatial joins.
Something like select all objects where one intersects the other. I did have a look around ...
3
votes
3answers
705 views
In Qgis, Is it possible to edit the datasource of a Postgis layer?
After creating a layer with RT_SQL_Layer plugin, I want to change some details in the query. Is it possible? or I have to aways create a new layer every time I want to change something in the query?
...
7
votes
3answers
2k views
free GIS software that can orthorectify?
Would someone care to recommend a free and/or open source GIS application that can orthorectify map images?
3
votes
2answers
143 views
How to bring polygons closer to a point?
I have some scattered polygons with a lot of space between them.
I want to make a thematic map but all that white space doesn't look very good, so I want to bring the polygons closer to the center of ...
5
votes
3answers
1k views
Create 3D dxf with OGR
Does anyone know if it's possible to create a 3D dxf with OGR. I would like to assign our contour lines a z value and export them to dxf for some cad work.
PS I know FME can do this, however I would ...
10
votes
3answers
719 views
Polygons from Polylines in either ArcView or FOSS
I have 20,000 polylines in a .gdb that represent about 5,000 building footprints. Some of the building footprints have pretty substantial gaps (image below). I would like to snap the polylines closed ...
7
votes
2answers
838 views
For a given feature find the closest point along a given path
Looking for a Java based (foss4g) solution for the following:
I am using a path along with a buffer to find features that are along the path. For each of the features returned I want to find the ...
2
votes
4answers
2k views
GIS newbie, How to georeference a jpeg metro map using OSS?
I have a metro map in jpeg format and I want to georeference it. My goal is to find GPS location of the metro stops and visualize them on google maps. Probably, the first step is to overlay the map ...
3
votes
1answer
668 views
Open-source projects that use DotSpatial?
I'm intrigued by what I see with DotSpatial, mainly for its C# interface with GDAL. I've downloaded the source (and the 3.5 x86 package) and I'm a bit stuck with using the GDALHelper class to ...
2
votes
2answers
116 views
Somebody knows a test to my application using WMS 1.1 (as a client) with OGC Standard?
I need a test to certificate my application with the OGC Standard. Please if somebody knows a site or something in which i can do this please contact me or answer this topic. Thanks.
My e-mail is ...
6
votes
1answer
613 views
Open source tool for point/node conflation/matching?
The Question
Are there any open source tools for conflating (matching) two layers of point (node) data?
Motivation
I'm particularly interested in using such a tool to sync data with OpenStreetMap, ...
3
votes
1answer
299 views
Complete lookup table for German admin codes in Geonames data? (admin4_code)
I am working with both the postal and Geonames data for Germany. I noticed that while the Postal data may be used as a lookup for ADMIN_CODES 1-3 (ADM1,ADM2,ADM3), it does not mention ADM4 at all.
...
