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1
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0answers
28 views

Frontal Detection of sst & Chlorophyll image

I am working on sea surface temperature satellite images and looking for delineating gradients in open source on the basis of temperature. Is there any tool like Cayula and Cornillon front detection ...
40
votes
9answers
12k views

Creating drive time polygons using open source tools

Is anyone using open source tools and/or data to generate drive time polygons that radiate out from a given location? For example, I have used ESRI products like Network Analyst and Business Analyst ...
7
votes
4answers
1k views

How to clip LAS data using shapefile polygons and open source software?

I am trying to clip or filter lidar files (las, xyz) using a shapefile that contains multiple polygons. Is there open source software that can do this spatial operation? My las files are enormous, ...
-2
votes
0answers
20 views

Which opensource desktop GIS software is best for adding & editing PostGIS features along with plugin/extension development in Java? [closed]

Which opensource desktop GIS software (among gvSIG, uDIG & OpenJUMP) is best for adding & editing features in PostGIS DB? Also is it possible to develop custom plugins/extensions in Java for ...
4
votes
5answers
1k 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 ...
0
votes
2answers
178 views

Calculating minimum/maximum width for overlay of two polygon strips in ArcGIS or some Opensource GIS

Is there some solution for calculating minimum and maximum width for overlay of two polygon strips? When I clip these strips the result is another strip with variable width about 1 km and 20 km long. ...
30
votes
5answers
9k 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 ...
0
votes
1answer
47 views

Chosing a GeoCMS server collaboration tool

I have seen a few things about different GeoCms. Researching these, none of them by default to actually seem to be a GeoCMS. Somehow when you hook these up to mapserver they become a GeoCMS. I do not ...
37
votes
6answers
9k 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 ...
2
votes
0answers
54 views

Cartographic-complete Maps in PDF On Request using Open Source?

Currently I have some data in PostGIS. I want to implement the following: users will make a request via web, with parameters like location, scale, layers to be displayed, etc. and I need to provide ...
6
votes
3answers
719 views

Are there open source solutions for travel demand modelling?

I'm looking for open source tools for travel demand modelling (eg The four-step UTMS). Preferably in a GIS environment. That works well with Qgis, Grass and Postgis. My question is not related to ...
4
votes
2answers
166 views

Is there a GIS-Tool that fit my needs?

I´m working on a GIS-Project in the Defense & Intelligence sector. The goal was to develop/create a GIS-Service that: stores and manage GIS-Data (Map data, Height data.. ) has a repository for ...
5
votes
0answers
342 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 ...
0
votes
1answer
182 views

Cloud Removal from Landsat Data

I'm trying to remove clouds from Landsat 5,7 and 8 data. I'm also trying to do this using only open source options, avoiding ArcGIS. I'm familiar with python and have some QGIS experience. Originally, ...
27
votes
8answers
13k views

Open Source Tool capable of reading Esri File Geodatabase (.gdb)?

I have an ESRI File Geodatabase (.gdb) file that I would like to convert to shapefile (or any other non-proprietary format). Are there any Open Source tools to do so?
138
votes
56answers
11k views

What free programs should every GIS user have installed?

Note: This question is specifically about installed, desktop software. There is another question specifically about free cloud-based software and services. I'm not necessarily referring to ESRI ...
1
vote
2answers
575 views

Choosing GTFS editor for creating and exporting routes?

I am a beginner and I need information about GTFS editors. I want to create routes,trips,patterns,etc... and export it to GTFS-format. I have setup locally two GTFS editors: TransitDataFeeder ...
14
votes
4answers
532 views

What's up with OpenJump?

OpenJump is a nice GIS, very functional, with many updates and has a beautiful rendering. But it's not very popular, and you don't see it around in discussions, in osgeo comunity, etc. And ...
1
vote
1answer
26 views

How to convert Geodatabase to open standards to process it further?

I have a ESRI file in geodatabase format (v9.3). I intend to use this in a non-commercial application. I think I will have to convert it into a open standard since I am confused if ArcGIS online would ...
4
votes
1answer
1k views

Open Source Alternatives to ERDAS IMAGINE ATCOR?

I have been using ERDAS IMAGINE's ATCOR extension for ATmospheric CORrection of ASTER imagery. What opensource options exist for atmospheric correction of ASTER Level 1B products? I'm primarily ...
2
votes
2answers
102 views

Framework/software for dynamic WPS creation

We have some specific EO data processing facility and are about to provide an access to one using WPS-based interface. The are plenty of solutions for the task. However, it is hard to find one that ...
5
votes
1answer
145 views

Cell declustering using open-source software

I want to perform cell declustering in a small point data set. I have 9 observation points and I want to find the size of the region of influence for an observation, and afterwards use that as ...
1
vote
2answers
66 views

Looking for atmospheric dispersion model with 3d GIS application

is there any atmospheric dispersion model with 3d GIS application that can use DEM and atmospheric data as input ?
1
vote
1answer
116 views

Creating a postgis database a GML application schema

Is there any open Source tool(automated or semi-automated) that converts GML application schema to a POSTGIS database/table .Specifically I have a huge application schema containing many ...
0
votes
0answers
32 views

Hosting Tiled images

I want to publish tile images that extracted using the MBUtil. I have the images but don't know what to do next! i.e. is there any open source way to publish them? and how?
7
votes
5answers
3k views

How to workaround large mosaic process which is failing?

I need to mosaic about 550Gb of tif imagery together and the software I have tried keeps failing. The area has been split into zones so that the smallest has approx 200 tiles. I have used the latest ...
39
votes
4answers
2k views

What are the FOSS equivalents to these ArcGIS products?

I'm a long-term user of ESRI software, and I now have a need to use free and open source software. I've been reading about Open Layers, PostgreSQL, PostGIS, GeoServer and MapServer but I can't find ...
11
votes
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 ...
2
votes
0answers
371 views

Data visualization techniques for web maps using ESRI and open source suites

I want to represent statistical data over the web map and looking the examples/techniques to represent data on the web map (apart from Pie-chat, bar graph) with new tools like gauge widget etc. ...
1
vote
0answers
63 views

how to create a web site for people to input their locations and other info

I am new to open source Web GIS and have done some self training about the basics of Geoserver, PostGIS and Openlayers. Right now I am in a rush to set up a web site for up to 100 people to access it ...
0
votes
0answers
19 views

Warp polygons/lines from distortion grid, or similar

Anyone have any ideas how I might go about warping polygons or line based on point based distortion map? Specifically, let's say I have a (non-regular) point data set. I create a clone of the data ...
1
vote
0answers
50 views

Free implementation of Polynomial Approximation with Exponential Kernel (PAEK) algorithm

I need a Free (i.e. Open Source) implementation of the Polynomial Approximation with Exponential Kernel (PAEK) algorithm, preferably in C, C++, Python, Julia or R. The algorithm is one of the methods ...
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 ...
1
vote
2answers
96 views

Open Source solution to batch process shortest distance between points along road networks?

I have the locations geocoded (a fairly small dataset, ~200), but I haven't found a straightforward way to load these data into QGIS and perform network analysis between nodes. Any suggestions? ...
16
votes
7answers
13k 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 ...
20
votes
3answers
1k views

What are the differences between spatial databases?

What is the difference between Oracle Spatial, PostGIS, SQLServer2008, SpatiaLite, and MySQL in terms of their spatial support. Are there specific use cases where each shines. What might you want to ...
0
votes
1answer
81 views

Is there a freeware alternative to Tableau 8?

Is there a freeware alternative to Tableau 8? One that allows me to use my own data (shapefiles)? Tableau is a comercial software that permits you to create a dashboard were you can show at same time ...
4
votes
3answers
175 views

Best practice to perform raster map algebra in open source web GIS?

Map algebra for raster is easy with ArcGIS Raster Calculator (or QGIS). I had thought this would be easy with web GIS servers such as GeoServer and MapServer plus OpenLayers etc. as well. What I want ...
45
votes
20answers
12k views

What are some Free and Open Source GIS Desktop packages

Can someone please give me a list of free and open source GIS desktop packages?
1
vote
2answers
98 views

Looking for an open-source Java based GeoTIFF library

I have written many programs for reading and writing various types of spatial data in the past but I must admit that the GeoTIFF format has often gotten the better of me. It's such a flexible format ...
0
votes
1answer
63 views

Using QGIS and PostGIS for multi-user capabilities, similar to ArcSDE for ArcGIS [duplicate]

I have previously used ArcSDE technology with Microsoft SQL Server to allow for multi-user database editing. My ESRI licenses have recently ran out and I have been using QGIS for my GIS work. I am ...
2
votes
1answer
462 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+ ...
-2
votes
2answers
253 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 ...
7
votes
5answers
10k views

Comparison of Open Source Desktop GIS Packages

I'm curious as to what comparisons are out there between different Open Source Desktop GIS software packages. I'm aware that there has been a QGIS and gvSIG comparison on this site but I am looking ...
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 ...
0
votes
0answers
26 views

laspy reading las file

New to laspy and encountering an error. The first code block describes the file header, the second (In[24]) fails to open the file with laspy: In [21]: import numpy import laspy from laspy.file ...
3
votes
1answer
403 views

Is TileMill opensource?

I was reading this GIS.SE question about whether TileMill will be replaced by Mapbox Studio. I got worried about the future as a TileMill user, and the question suddenly came to me "isn't tilemill ...
3
votes
3answers
321 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 ...
6
votes
4answers
2k views

Open Source equivalent to Collector for ArcGIS to use with QGIS/PostGIS?

From my reading of the Esri web pages the Collector for ArcGIS is tightly tied to that platform. I would be delighted to learn that I am wrong about this. I have a strong interest in generic mobile ...
5
votes
3answers
185 views

What are the most efficient Geographic Weighted Regression packages?

What are the most memory efficient open source packages for calculating a geographically weighted regression (GWR)? I am in a situation where I need to do a geographically weighted regression on a ...