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3
votes
2answers
541 views

Can I create blended images with GDAL command line utilities?

I've written a program in Python with GDAL bindings that generates a single band georeferenced GeoTIFF as output. From there I use the GDAL commandline tool gdaldem to colorize that image to ...
23
votes
6answers
679 views

What are some good introductory books or articles about Open Source GIS for students coming from an ESRI background?

I am preparing an intermediate GIS course for graduate and undergraduate students who have likely not been in touch with anything but ESRI software. It is an existing course in the curriculum that I ...
3
votes
4answers
3k views

How to calculate for every basin/sub-basin, drainage area at every elevation contour along stream?

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 ...
10
votes
8answers
9k views

Is there a comprehensive list of latitude and longitude values for cities around the world?

I'm developing an application that calculates the distance between cities using their respective Longitude and Latitude values. But the problem is where to get a comprehensive list of latitude and ...
7
votes
2answers
432 views

Looking for advice regarding solar potential applications

I have the task of looking into whether it is possible to build a solar potential application which would inform the user whether a roof is suitable for solar panels and a brief report about the ...
21
votes
9answers
2k views

How to easily shift all features in a vector dataset?

Let's say that I put together a Shapefile and all the features have their vertices shifted by a constant amount. What's the easiest way of shifting all the features (hence the (x,y) position of their ...
4
votes
1answer
474 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 ...
0
votes
1answer
257 views

Open Source Flexviewer application

I would like to know if there are any open source flex viewers some thing on the same line as ArcGIS Flex Viewer ??
4
votes
1answer
523 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
3answers
847 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 ...
-1
votes
1answer
123 views

GeoPortal Managing Tool [closed]

i know in this site everybody more or less have been setup a geoportal for showing their basemaps and analysis on local or net for their workers or conserned people in the net. it is obvious that in ...
20
votes
4answers
3k views

Is there any model builder in QGIS or other open source GIS?

Like the ModelBuilder of ArcGIS for Desktop to run simultaneous geoprocessing tools, is there any model builder available in QGIS or any other open source GIS software?
7
votes
2answers
854 views

How to animate raster time series using open-source GIS?

I have a bunch of rasters taken about 10 minutes apart, and I have a nice QGIS project that produces pretty enough maps of them. I'm wondering if there's a way to animate this raster series, with a ...
3
votes
2answers
576 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.
4
votes
1answer
411 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 ...
6
votes
3answers
3k 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?
9
votes
1answer
382 views

Open source GIS tool for mapping health data

Im looking for an open source desktop gis tool that can be used for visualization and exploratory analysis. I want it to be interactive and perhaps display two or more maps at the same time to allow ...
6
votes
2answers
809 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, ...
4
votes
2answers
2k 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 ...
2
votes
0answers
478 views

GeoServer WFS Speed

I have set-up a machine running Windows Server 2008, and GeoServer 2.1.3. PostgreSQL 9.1/PostGIS 1.5.3 are running locally on that same machine, which is hosted at a location with a 250 ...
2
votes
1answer
567 views

How to write to shape file in MapGuide

Here the code I have written to a Shape file in MapGuide Open Source (in PHP running on IIS 7.5). The code is actually the modified class MarkupEditor (markupeditor.php) from the General Tracks (Gt) ...
4
votes
4answers
362 views

Looking for web and desktop tools with GML support

I am a graduate student and a novice in GIS field. I have few GML files that contain vector polygon data and I want to see them in a map format. The problem is that I do not have access to ...
10
votes
2answers
724 views

Metadata -auto build using python

We have a large (10,000 plus) repository of spatial data (shp/gdb/tab vectors and ecw/tif rasters and also las, xyz and DEM data) where some have metadata records in xml using anzlic metadata editor. ...
15
votes
6answers
11k views

Is there an open source Geocoding tool which can be used commercially?

Is there any Geocoding tool which is open source and can be used in commercial application? We tried Google geocoding API's but cannot continue with it because of some licensing limitation. Now ...
1
vote
1answer
99 views

Render a raster with hue values in QGIS

I have a single-band raster (a GeoTIFF) with hue values in the band. I'd like to render it, preferably in QGIS but another open-source GIS would be acceptable as well. The saturation and value should ...
1
vote
1answer
206 views

Open Source Challenge: Automated Mastermap update in Oracle Spatial

I've been set a challenge which is a bit out of my comfort zone. I'm an esri developer trying to break into the open source world. I've been asked to automate the update of some oracle SDO datasets. ...
2
votes
2answers
466 views

batch create DEM from contour maps (open source)

I have around 100 shapefiles of contours (1m interval) that I need to turn into DEMs; Is there a way to batch create these mde from contour lines? Using open source preferably.
4
votes
2answers
841 views

How to cut a shape file?

I want to use a shape file of the Corine Land Cover. This covers all of Europe, but I am only interested in the area of Scandinavia. How can I cut this file using free software (preferably a ...
9
votes
3answers
780 views

Alternatives to Shapefiles as open-source, cross platform dataset types

I am working on software that is very ESRI oriented, but a future version will likely not be using ESRI software. It uses Shapefiles and Geodatabases. I'm planning on getting all of my data to ...
4
votes
2answers
358 views

How to efficiently project datasets of varying coordinate systems into one coordinate system?

I am working on streamlining data processing at my organization. Currently we are using various large-scale Models that we will gradually bring into Python. The gist of our data processing is as ...
1
vote
0answers
107 views

free webgis environment solution? [duplicate]

Possible Duplicate: Steps to Start Web Mapping soon I will be trusted to develop a webgis system. This project will take an advantage of a currently developed business system. The business ...
0
votes
1answer
154 views

Developer-friendly Embedded systems GIS library?

Having seen the answer to the smallest GIS library for embedded devices, I'm asking a related question. I want to do simple point-in-polygon and other spatial relationship tests against a shapefile. ...
11
votes
1answer
583 views

automating roof orientation detection from satellite imagery

A while ago I did a neighbourhood roof orientation survey for solar panel deployment, by visually checking each roof and marking individually whether they were south or almost south-facing. As this ...
36
votes
6answers
7k views

Free GIS workshops, tutorials, and applied learning material

Note 1: Please enter answers separately or feel free to edit this post directly Note 2: Please report on any broken links so they can be removed This thread lists free as in $0 workshops in GIS and ...
11
votes
4answers
2k 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 ...
13
votes
4answers
1k 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 ...
10
votes
5answers
1k 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
526 views

Which are the best open source tools/solutions for digitizing road networks?

I was thinking on tools/plugins for QGIS, but other good suggestions are welcome.
5
votes
2answers
4k 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 ...
19
votes
4answers
919 views

How to generate schemas of GIS hardware / software / workflows?

Quite often I find myself in a situation where I need to explain hardware or software GIS infrastructure to people with no or limited knowledge of GIS. Or give an overview of geoprocessing tasks ...
8
votes
1answer
476 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
637 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
457 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
119 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
212 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
497 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 ...
7
votes
4answers
805 views

Looking for open source component to create PDF from WMS in a web application

I want to create a PDF from WMS in a web map application. Please can anyone recommend a robust component? I'd like free open-source under an relatively business-friendly licence (no GPL, BSD/MIT ...
6
votes
2answers
792 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
1k 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 ...
13
votes
9answers
893 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 - ...