Software for which the original source code is made freely available and may be redistributed with or without modification.
4
votes
1answer
267 views
How to display intersecting roads and create multiple labels for long roads in QGIS?
I am new to GIS and I am using Qgis 1.7.3 on Windows.
Can any one please tell me how to display a map from line shapefile with these two characteristics:
Roads are displayed with borders at the ...
4
votes
1answer
52 views
looking to integrate R-trees into AlchemyDB
I am the author of AlchemyDB: http://code.google.com/p/alchemydatabase/
I would very much like to add geospatial indexing in the form of R-trees (most likely) and need some advice on whether or not ...
4
votes
1answer
362 views
Postal areas for Germany? - Shape?
does anyone of you know how and where I can download postal area districts of Germany in shape files (download free of charge if possible).
best regards
desputin
4
votes
1answer
137 views
Seamless, color balanced mosaics of aerial RGB photos with Open Source
I'm looking for an open source tool/workflow (even a command line one) to obtain what it is advertised in programs like
http://www.inpho.de/index.php?seite=index_orthovista
...
4
votes
1answer
549 views
Open Source Remote Sensing vs eCognition, ERDAS etc Is it worth it?
What, if any, would be the main benefit of using a commercial tool like eCognition (in particular) or ERDAS as opposed to something like Orfeo Toolbox or OpenCV? (Feel free to suggest other open ...
4
votes
1answer
784 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 ...
4
votes
1answer
1k views
Reverse Geocoding Libraries
I'm new to GIS and mapping services.
Can anyone tell me what my options are for reverse-geocoding libraries, other than nominatim? I'm most likely going to be working with OpenStreetMap data. So ...
4
votes
1answer
80 views
Create Basemap with custom Data
I am getting trouble with creating a basemap with my own data. I have huge data. So I don't want to use any other basemap platform like leaflet or Mapbox or Google.
I have tried with ArcGIS server ...
4
votes
1answer
274 views
How you can repair invalid topology errors within postgis?
I've imported the shapefile of corine land cover project to my postgis database and the
select gid, ST_IsValidReason(geom) from gis.clc2000 where not ST_IsValid(geom);
returns in every occasion
...
4
votes
1answer
323 views
Which interpolation method is the most suitable for DEMs?
Which interpolation method is the best suitable for hill/valley areas and normal ground with undulations and rivers? When working with Aster 30mX30m DEMs, which method will give the most realistic ...
4
votes
0answers
258 views
Can Quantum GIS replace Proprietary GIS? [closed]
I’m an MSc GIS student in the final year of my studies. I’m researching for my dissertation project which is entitled ‘Can Quantum GIS replace Proprietary GIS in large organisations?’
I’m primarily ...
3
votes
4answers
6k views
Arcgis Server vs Open Source software [closed]
What do you think what are the advantages and disadvantages (of both)? Of course appart from fact that open source software is free to use. I mean rather somethink like capabilities, functionality, ...
3
votes
4answers
457 views
How stable is MapWindow on a 64 bit machine
One of my favorite ArcGIS extensions (N_SPECT) is no longer going to be supportd under ArcGIS 10. It will be totally rewritten as a MapWindow plug-in, so I need to get up-to-speed with that in case a ...
3
votes
3answers
163 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?
3
votes
5answers
1k views
Ways to load OS VectorMap data
Us lucky fellows in the UK have been able to access public geodata from Ordance Survey under an open licence since April this year. Some of the datasets, including VectorMap, are broken into 100 ...
3
votes
1answer
242 views
What open-source web mapping solution I need to use for this situation?
I will try to explain what I need to do. I have about thirty KML polygons. I need to put them on some satellite map. On the top of these layers (KMLs, satellite) there must go layer with roads. I ...
3
votes
3answers
681 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?
...
3
votes
6answers
797 views
flex/AIR based SLD generator?
styling layers in GeoServer can be tedious to say the least. while Styler can relieve some of that tedium it doesn't yet work in chrome, can wreck existing styles if not carefully used & still ...
3
votes
3answers
160 views
Where can I find a GDAL distribution with DWG support?
I want to use the GDAL utility ogrinfo with dwg files. Where can I find an GDAL distribution with a support for DWG files (read only)?
DWG support is moved out of the normal GDAL/OGR source ...
3
votes
2answers
548 views
Basic .NET mapping components?
Which .NET mapping components are currently available? Focus is on desktop use and fairly basic mapping of SHP files (thematics etc.), not the more advanced GIS functionality (reprojections, clipping, ...
3
votes
2answers
141 views
Selecting a suitable GIS for my project
I need to develop a web-based map using existing shape files. Using the web-map, we must be able to select a region and produce contours for that selected region. Can any one suggest the best open ...
3
votes
3answers
428 views
How to link a video to a GPS trail?
Does anyone of a program, extension or tool that links a video with a GPS trail?
I found this video and would like to be able to do something similar.
http://www.youtube.com/watch?v=G07DWVRJBVU
...
3
votes
1answer
1k views
Converting tax map polygons from Shapefile to table of map number and corner coordinates
Fairfax County, Virginia provides a Shapefile here which shows the boundaries of the tax maps as polygons. Each polygon simply consists of four corners, and what I'd like to do is create a table ...
3
votes
4answers
425 views
Open source tool to view DTED and DEM raster-data
I am new to GIS field. Is there any open source GIS tool to view DTED and DEM tiff-files?
Update 1
I have some DTED files and DEM files. I want to open and see those files using some open source GIS ...
3
votes
1answer
218 views
What open source software should I use to geocode the addresses?
Need to geocode the student addresses using the regular 5-digit zip
codes. Geocoder will give us an accurate point on the map, so in a Latitude and Longitude environment that should suffice for our ...
3
votes
1answer
655 views
Open Source Tools for Mobile GIS app development?
I want to create a complete Map application with the facilities of edit geometry and attributes of layers. The server and client for the application should be some open source tools. The application ...
3
votes
1answer
844 views
GPS Module Without Velocity or Altitude Limitations
I am looking for a GPS module that I can use in a high-altitude project. The problem I have discovered is that GPS manufacturers are required to place a set of restrictions on GPS modules. The ...
3
votes
2answers
140 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 ...
3
votes
1answer
426 views
postgres command to save the line coordinates in openlayers
I am working on project that we create one map ant editing toolbar. Then by using that editing tool bar we can draw point, line, polygon on the map. Next we are converting the line, point, polygon ...
3
votes
3answers
1k views
GeoServer in Windows x64 - war file installation versus Windows installer?
After running a GeoServer war file installation in Tomcat for some time in Windows Server 2008 x64, I've become increasingly unhappy with Tomcat's chronic memory issues and leaks. Now that the ...
3
votes
1answer
100 views
Hydro-Enforced/surface constraint DEM Creation using GRASS/QGIS
I am wondering if there is a way to create a hydro-breakline enforced DEM by means of any open source solution?
I am able to create a DEM from Lidar data using GRASS, but would like to enforce some ...
3
votes
1answer
359 views
Is there an open source tool for both road network analysis and geocoding?
Is there any one open source software package that can perform both road network analysis and geocoding?
3
votes
1answer
651 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 ...
3
votes
1answer
174 views
What do I need to create 3D model of real terrain?
I'd like to create 3D model of some real terrain (to be exact it's about some real roads and only as much as 80m to 100m of roadside - 40m to 50m of each side). As I don't have access to highly ...
3
votes
1answer
112 views
Parse error while inserting values into polygon feature
I created a polygon as follows
create table boundary (id int, name text);
table created;
select AddGeometryColumn ('',boundary', 'latlon' 4326,'POLYGON', 2);
geometry column added;
then i'm ...
3
votes
1answer
211 views
How to put a roads layer (OpenStreetMap) on top of KML polygons?
I need to develop a map where KMLs are overlayed with road layers. So, KMLs are polygons, and I would need to use a map tiles like OpenStreetMaps. But the problem is how to put roads on top of KML ...
3
votes
2answers
341 views
Open Source viewer Like ArcReader
I would like to know if their are any open source map desktop based map viewers something similar to ArcReader. Preferably if this can use the files created from QGIS.
3
votes
1answer
109 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
1answer
288 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.
...
3
votes
0answers
33 views
Rasterization tools for vector datasets with styles
I have hundreds of Personal Geodatabases and I want to create one georeferenced TIFF for each one. Each PGDB has the same feature classes ('CotourLines', 'Hidrography', etc) for what I have some ...
3
votes
0answers
27 views
How can I display GeoEye1 imagery in colour in Opticks?
Anyone familiar with the use of the open-source remote sensing software Opticks? Im new to opticks, I load GeoEye1 imagery but it displayed as greyscale. It supposed to be displayed as bands ...
3
votes
4answers
307 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 ...
2
votes
3answers
152 views
Differences in costs of open-source hosted GIS software?
I recently saw a listing of the available GIS products at thegismarketplace.com, which led to a couple of questions.
What is the difference between a paid version of GeoServer or MapServer and the ...
2
votes
3answers
334 views
Which open source software to create desktop interface for Geo-processing tools?
I want to create an desktop interface to create geo-processing tool and that to using Open source GIS software. I will be using Postgresql and postgis too to save and retrieve data for operations. I ...
2
votes
4answers
2k views
Watershed Analysis
With DEM as source, I created all necessary files like flow direction, accumulation,slope,streams,watersheds,pour point etc....
In my watershed(basin), I have many sub-watersheds(sub-basin) with ...
2
votes
3answers
321 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 ...
2
votes
3answers
908 views
Creating GeoTiff from Tiff+WorldFile+Proj
I'm currently using the global mapper export function to convert my tiffs+worldfile+projection file to geotiff. Is there a commandline tool (for Linux) that lets me do the same thing?
"gdaltranslate" ...
2
votes
2answers
355 views
Should I start a new project using MapGuide OS?
I'm wary of starting a debate based on opinion, so I lifted my title from this question which seems to be doing fine. I'm also worried about offending MapGuide enthusiasts so please understand I am ...
2
votes
1answer
1k views
Where do I find the ogr2ogr command for Mac OS X Lion?
I am looking for the equivalent of FWTools for Mac OS X, Lion. Is there anything I can easily install and get that command?
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 ...
