Tagged Questions

Software for which the original source code is made freely available and may be redistributed with or without modification.

learn more… | top users | synonyms

4
votes
3answers
553 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 ...
6
votes
2answers
334 views

What are my options for Server side clustering using open source GIS tools?

I need to make a webapp that will show over 40K Points on a map. These points are all across the globe. Using WFS Service and OpenLayers, it is possible to do clustering on small set of points, but ...
5
votes
0answers
132 views

How to add shapefile name as attribute during merge? [duplicate]

Possible Duplicate: How to add field with filename when merging shapefiles with ogr2ogr? I have more 200 shapefiles with a unique name. I would like to merge all of these together and save ...
2
votes
1answer
445 views

QGIS ->ArcGIS Server configuration possible?

Is it possible to connect a QGIS Desktop 1.8.0 to an ArcGIS Server 10.0 ? and of course publish services on it?. The configuration would be like this Quantum GIS-> ArcGIS Server 10.0 on Amazon EC2+ ...
3
votes
1answer
1k views

Setting transparency in an SLD file for a 4 channel GEOTIFF

I'm struggling to set the a background colour to transparent in an SLD file for a 4-channel GEOTIFF using GeoServer 2.1.4. I think I've set my background colour to transparent alpha layer in a ...
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 ...
1
vote
2answers
598 views

Creating Mobile web mapping application [closed]

I was interested in creating a mapping application in the iOS environment. I have looked at what ESRI has to offer, but I am interested in open source. Could anybody suggest any documentation or point ...
-4
votes
1answer
79 views

Geocodin process in open source GIS tools [closed]

I want to do geocoding with open source gis tools , is it possible? if then tell me the solution? I have my village attribute data with me like addresses and contact information of persons in every ...
14
votes
4answers
437 views

Is there a FOSS solution for legend parsing in a web mapping environment?

Our web mapping requirements are fairly standard - some basic querying and the ability to print out the resulting map (or save the image). Typically we've used ESRI products in the past (right now ...
4
votes
1answer
131 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 ...
3
votes
0answers
64 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 ...
1
vote
1answer
111 views

Projection Transformations [duplicate]

Possible Duplicate: How can I measure area from geographic coordinates? I created my spatial tables in WGS-84 with SRID:4326, I want to transform them to UTM Projection to measure length ...
3
votes
1answer
57 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 ...
4
votes
2answers
228 views

Which GIS best for this problem?

This problem is similar to retail presence optimization. I'd like to know which GIS's could help us do the following: Given a set of point locations, create a circle of radius n meters around each. ...
5
votes
0answers
332 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 ...
5
votes
1answer
325 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 ...
15
votes
10answers
8k views

What is the best open source software package for Remote Sensing?

Here are many questions with great answers about open source GIS software. I am wondering, what is the best open source software package for Remote Sensing? I would like to learn it and to use in my ...
1
vote
1answer
101 views

Are There Any OpenSource GIS Software Programs With an “Interactive” Rotate Feature Option?

![Rotate feature option][1]Sorry if the question is too simple, but are there any open source GIS software programs available with an interactive "Rotate vector feature" option? Eg : ArcGIS has it ...
0
votes
1answer
68 views

How to view the class files of QuantumGIS for further development?

I have been searching class files of QGIS for a while for customisation and edit it for a project..But I am unable to get or download the files...can anybody give some references if we can really view ...
3
votes
1answer
337 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 ...
8
votes
1answer
496 views

Are Zonal Statistics possible in PostGIS2?

Now with postgis2 which supports rasters by default is it possible to do a zonal statistics analysis? I've google it but I haven't found anything solid? Is there a tutorial outthere to get me ...
-2
votes
2answers
244 views

Steps for redistricting using ArcGIS Desktop or Open Source GIS? [closed]

I have been struggling with how to redistrict in ArcGIS Desktop so can anyone put me through the necessary steps, data, extensions, to perform this operation. More so, is there any Open Source GIS ...
5
votes
1answer
808 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 ...
8
votes
4answers
681 views

Preferred programming language and software for entire remote sensing workflow?

I have been involved in remote sensing for some years now during studies. I am wondering which combination of software and image processing modules would be most suitable for an entire process chain ...
2
votes
1answer
145 views

Permissive Open source planarize algorithm?

Is there a permissive open source implementation out there for a "planarize" algorithm (in the style of arcgis planarize - including user modifiable cluster tolerance)? NB this is not a duplicate of ...
2
votes
1answer
561 views

How to join two polygon layers into a resulting layer with overlapping polygons merged together (including attributes)

I am trying to find a method (in QGIS and/or GRASS) to join two layers of polygons into a resulting layer with merged overlapping polygons. It's hard to explain in words, so I've drawn a simplified ...
1
vote
1answer
141 views

QGIS 1.8 Desktop and Ubuntu 11.10

I'm working with QuantumGis 1.8 Desktop on Ubuntu 11.10. Two days ago the program crashed while I was working with some WMS layers and then it hasn't been working anymore. When I open QuantumGIS ...
19
votes
5answers
3k views

What is Change Detection and how I can perform such analysis with open source tools?

From wikipedia page: Change detection for GIS (geographical information systems) is a process that measures how the attributes of a particular area have changed between two or more time periods. ...
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 ...
7
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 ...
1
vote
1answer
328 views

What is the relationship between Autodesk and the MapGuide Open Source project?

In the year 2006 Autodesk started MapGuide as an open source project (MGOS). At the same time they began to develop the commercial version of MapGuide (MapGuide Enterprise MGE /Autodesk Infrastructure ...
14
votes
4answers
2k views

What is the best open-source web mapping solution for handling 3000+ polygons

I have 3000+ polygons which represent watersheds (18 main watersheds). At the first stage all the 18 watershed will show and their list will be placed in the left sidebar. If any user mouse over the ...
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?
24
votes
7answers
836 views

GIS developer blogs … recommendations?

I'm looking for recommendations for GIS blogs ... specifically GIS developer blogs. I'm less interested in the geography than in how apps are put together. I'd like to keep up with ESRI ArcGIS as ...
5
votes
1answer
1k 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 ...
3
votes
1answer
346 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 ...
9
votes
2answers
660 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 ...
3
votes
2answers
871 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 ...
3
votes
1answer
387 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 ...
1
vote
0answers
223 views

how to automate changing polygon's shape while keeping its area the same and limiting deviation from orginal centroid? [closed]

I have a polygon that was digitized based upon visually interpreting underlying values of rasters/vectors that represent a natural environment (soil type, surface roughness, slope, elevation, ...
2
votes
2answers
193 views

Opensource Tools for Optimizing Server Performance

I use a server with a basic Microsoft OS primarily for data storage and as a central repository for edited vector data. These data are not intended to be used as mapping or GIS products available ...
2
votes
1answer
1k views

Unable to see whole world map by decreasing panzoom bar?

I am seeing one weird thing in Openlayers today. I am unable to see whole map by using panzoombar, previously i used to. <html> <head> <title>OpenLayers Example</title> ...
9
votes
2answers
309 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 ...
0
votes
1answer
723 views

Compiling Grass from Source in Ubuntu

Hi a while ago I drafted a semi-universal guide on how to compile GRASS GIS on Ubuntu. Because I had enough emails asking more details I thought to post it here for everyone and if possible to ...
13
votes
2answers
330 views

Opensource solutions for finishing maps

After seeing the $600 price tag for Adobe Illustrator, I am especially interested in learning open source solutions for finishing maps created in a GIS. What open source, or commonly available, ...
0
votes
0answers
46 views

Comparison components open source GIS [duplicate]

Possible Duplicate: Comparison of Open Source Desktop GIS Packages I'm doing a little research to the available open source GIS-applications. I found a lot of OSGIS on the internet and now ...
3
votes
2answers
151 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 ...
2
votes
1answer
695 views

Loading Raster and vector data In MapGuide using Maestro

I am new to Mapguide , working on it for my summer Internship.I have Installed it perfectly. Now the task is to load vector data and Raster data in map Guide (mainly have to load *.shp files and *.tif ...
4
votes
1answer
67 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 ...
2
votes
1answer
130 views

OpenLayers 2.12 Release Schedule? [closed]

Does anyone here know when OpenLayers 2.12 is likely to become a Stable release rather than a release candidate, it contains so many handy performance and user interface improvements that I really ...