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12
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4answers
5k 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?
12
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5answers
499 views

List of desktop GIS FOSS case studies

I think we should create a list of best desktop GIS FOSS case studies. First of all this list will be useful to anyone who considers desktop GIS FOSS for a project as an viable alternative.
12
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3answers
785 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 ...
12
votes
4answers
3k views

Remove Duplicate Polygons Using Open Source Tools

I have a shapefile containing features with duplicate geometries, but different attributes (e.g. a polygon with attribute XX, and an identical polygon with attribute XY). I want to identify the ...
12
votes
3answers
6k views

Free Alternative to AutoCAD Map

I would like to know if there are any free (for commercial use) software packages that roughly correlate to the functionality in AutoCAD Map. Specifically, I am looking for something that is: ...
11
votes
9answers
11k 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 ...
11
votes
9answers
2k views

What is a good Javascript web API (preferably open) for building web maps that require little/no maintenance?

I have recently volunteered to make a web map for a local non-profit. The map will be pretty basic. It needs to display Lane county, Oregon split into multiple districts, with a "central office" ...
11
votes
4answers
3k 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 ...
11
votes
7answers
782 views

Free / Open source GIS Education sources

I'm looking for free / open source GIS education sources for advanced GIS users. Specifically sources that cover programming, spatial analysis, modeling, spatial databases / data management. I use ...
11
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5answers
422 views

What free or open source cloud-based software is recommended by/for the GIS community?

Note: This question is intended to complement an earlier question on installed, desktop software. What GIS-related, or even non-GIS-specific, web- or cloud-based software/tools/services -- that are ...
11
votes
2answers
553 views

Open source alternative to ArcGIS geoprocessing service concept?

I am searching for any examples of implementing a logic that Esri has built with geoprocessing services. You author a custom tool or it can be a system tool >> you publish it exposing this ...
11
votes
1answer
671 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 ...
10
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14answers
6k views

Which GIS support DXF and/or DWG?

Which GIS support DXF and/or DWG (preferably read&write)? Update: Are there any open source GIS supporting these or similar CAD files? Support of CAD files generally seems to be problematic. ...
10
votes
4answers
1k views

Best open source operating system for open source GIS?

I'm wanting to get into open source GIS, and it looks like PostGIS on Postgres is a good DBMS to go with, and there are plenty of posts on desktop editors. What I haven't come across (and forgive me ...
10
votes
6answers
1k views

Open source CAD software

Does anyone know open source CAD software (like edit, update cad files and attach external information, create topology etc.) Researching on internet also (Going through Kosmo Desktop,DraftSight ...
10
votes
6answers
2k views

Options for Open Source Cloud GIS?

I'm looking for an open source cloud GIS solution. Current situation: Up to 100gb of data stored in file geodatabases that is updated daily. Data is used to create maps as well as geoprocessing ...
10
votes
3answers
1k views

Can ESRI Personal Geodatabase be viewed with any software other than ArcGIS?

Is it possible to open a PGDB file in software other than ArcGIS? i.e are there any opensource software available just for viewing the data?
10
votes
3answers
3k 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
5answers
1k views

Seeking Open Source ISO Metadata Editor?

I am looking for a free open source ISO 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 ...
10
votes
1answer
1k views

Alternatives to Ushahidi for Crowdsourcing?

We all know that Ushahidi offers a versatile solution for crowdsourcing information and its effective depiction in maps. I am interested to know if there is any application(free and open source) on ...
10
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4answers
722 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 ...
10
votes
3answers
814 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 ...
10
votes
2answers
4k 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 ...
10
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2answers
3k views

How to import esri Personal Geodatabase (.mdb) to PostGIS on Linux

We have esri Personal Geodatabases that we need to import into PostGIS. Ultimately, we'd like to allow people to upload an MDB on a web server, and have it import the layers into PostGIS. On ...
10
votes
1answer
211 views

Have there been any geospatial applications run in OpenStack by non-governmental entities?

This whitepaper about NASA's Nebula project, describes how cloud computing was used by NASA's Short-term Prediction Research and Transition Center to identify damage scars left by tornadoes. Since ...
10
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2answers
769 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. ...
9
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10answers
3k views

Need a Benchmark GPS Trajectory data-set? Anyone?

I'm looking for a benchmark GPS data set, available for research purposes for free. I've found GeoLife GPS Trajectories dataset from Microsoft Research but I find it a little incomplete. What I need ...
9
votes
3answers
885 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 ...
9
votes
5answers
2k views

Where can I get neighborhood boundaries?

Besides Zillow's creative-commons licensed neighborhood boundaries shapefiles, what sources of neighborhood boundaries are there? Not just in the US, but all over the world. Free/open source is ...
9
votes
4answers
1k 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.
9
votes
3answers
3k views

Get all vertices of a polygon using OGR and Python

I'm having a little trouble with the Python OGR API. What I am trying to do is get all the coordinates of each vertex of the outer ring of a polygon. This is what I have so far: import osgeo.ogr ...
9
votes
1answer
400 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 ...
9
votes
3answers
1k views

Create DEM from stereo pairs?

Does ArcGIS Desktop or any of its native extensions allow me to create DEMs from stereo pairs (acquired by satellite, GeoEye 1)? If the answer is a clear no, brownie points will go to an answer that ...
9
votes
2answers
312 views

Options for a historic Web Map?

EDIT: I'm an intern at a small local history museum. We have a budget of $0. Project overview: I've got a bunch of old paper maps. When I say old, I mean 1800s and up. They've been scanned into ...
9
votes
2answers
1k views

Processing SQLite files using ArcGIS Desktop?

I'm using qgis and grass for my work. I've produced a shapefile which is over 100mbs (s a result of some statistical analysis). If i convert it to sqlite format (spatially enabled) the data shrinks ...
9
votes
2answers
409 views

How do I generate a large number of maps?

I have to make a large number (hundreds) of distribution maps of species. I have a shapefile that contain the distributions for each species, and for each one, I would like to get a map as an image ...
9
votes
2answers
714 views

Looking for a tool for Orthorectification of Archived Air Photos

I was wondering if anyone knows of an open source, perferabily something for QGIS and not GRASS, that can be used for orthorectifying scanned archived air photos. I have looked at OSSIM and a few ...
9
votes
1answer
2k 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 ...
9
votes
0answers
3k views

Open source alternative to FME from Safe Software for Spatial ETL? [duplicate]

Just wondering if there is any open source solution which comes close to safe FME? I would like to integrate it into my workflow, but it´s just another few thousand which my employer has to give out ...
8
votes
2answers
684 views

Most suitable open source GIS platform

I'm looking for an open source GIS server or desktop package that supports as many file formats as possible, is fast, runs on Linux or Mac and can be controlled via an API. Planning to do very basic ...
8
votes
5answers
3k views

Is there a good library for WMS “Tile Servers”?

I am looking for WMS Tile Servers that I can consume with "OpenLayers". One: Are there any good library / resources online that collate WMS tile servers or where is a good place to start looking? ...
8
votes
2answers
2k views

How to calculate average slope in a grid?

This is actually a two part question: Which methods are there to calculate average slope by unit (say km²) for a given area? Are there any special requirements on the data - like additional ...
8
votes
4answers
345 views

Open-source software solutions for an Esri user

I am currently a student and have been using Esri software pretty much exclusively for my GIS needs. I occasionally use R for raster creation, especially as outputs of statistical models - which I ...
8
votes
6answers
1k views

How to integrate SAGA Python Modules into ArcGIS Desktop?

I have been having a look at SAGA (http://www.saga-gis.org/en/index.html) and it seems to have some nice tools for geoprocessing. I was wondering if anyone out there has had any luck bringing SAGA ...
8
votes
3answers
1k views

Do any open-source .Net libraries (commercially usable) exist for reading/writing LiDAR data?

I have a few LiDAR point data (.las files) with me. I would like to read the X,Y and Z from it using .Net. I found liblas, which is in C++ and I am not sure if it can be used commercially after ...
8
votes
6answers
2k views

Open source tools for creating and publishing animated web maps?

I am interested in creating animations from observations or model predictions and then displaying these animations in a web-based viewer such as OpenLayers. The best example I have found of this ...
8
votes
5answers
2k views

How do I serve data in a sqlite database on a shared web host, like GoDaddy, onto a GIS web map?

I am new to the web mapping arena. I currently am managing a website and would like to add a mapping portion to it, mostly for some simple viewing and querying of a small number of layers. For ...
8
votes
2answers
193 views

GIS - related magazines, monthly papers? [duplicate]

I was wondering if you can recommend some magazines or basically any other GIS-related papers (printed or digital) which are released on a monthly basis (or every 2-3 months); I am practically ...
8
votes
4answers
1k views

Looking for a fast, open-source raster cost-distance function to use in code

I've been scouring the internet for a fast, open-source cost-distance function that I can embed inside my code. The functionality should basically work like the ArcGIS implementation where I can ...
8
votes
2answers
812 views

Are there any open source mapping APIs/toolkits for drawing axes,labels,graticules etc?

I tried to post a more generic question to meta, but it's my first question, so I didn't have a reputation yet. The first question I have is whether this is an appropriate place to ask questions ...