Re: [OSGeo-Discuss] [GRASS-user] [GRASS-dev] New stable release: GRASS GIS 7.0.0
Congratulations! I've compiled my first GRASS when 5.0 was going to be released... what a long way has been done meanwhile! giovanni Il 22/feb/2015 23:41 Paulo van Breugel p.vanbreu...@gmail.com ha scritto: Congratulations to all developers!! On Sun, Feb 22, 2015 at 10:51 PM, Markus Neteler nete...@osgeo.org wrote: Press release The GRASS GIS Development team has announced the release of the new major version GRASS GIS 7.0.0. This version provides many new functionalities including spatio-temporal database support, image segmentation, estimation of evapotranspiration and emissivity from satellite imagery, automatic line vertex densification during reprojection, more LIDAR support and a strongly improved graphical user interface experience. GRASS GIS 7.0.0 also offers significantly improved performance for many raster and vector modules: Many processes that would take hours now take less than a minute, even on my small laptop! explains Markus Neteler, the coordinator of the development team composed of academics and GIS professionals from around the world. The software is available for Linux, MS-Windows, Mac OSX and other operating systems. Detailed announcement and software download: http://grass.osgeo.org/news/42/15/GRASS-GIS-7-0-0/ About GRASS GIS The Geographic Resources Analysis Support System (http://grass.osgeo.org/), commonly referred to as GRASS GIS, is an Open Source Geographic Information System providing powerful raster, vector and geospatial processing capabilities in a single integrated software suite. GRASS GIS includes tools for spatial modeling, visualization of raster and vector data, management and analysis of geospatial data, and the processing of satellite and aerial imagery. It also provides the capability to produce sophisticated presentation graphics and hardcopy maps. GRASS GIS has been translated into about twenty languages and supports a huge array of data formats. It can be used either as a stand-alone application or as backend for other software packages such as QGIS and R geostatistics. It is distributed freely under the terms of the GNU General Public License (GPL). GRASS GIS is a founding member of the Open Source Geospatial Foundation (OSGeo). ___ grass-dev mailing list grass-...@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev ___ grass-user mailing list grass-u...@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] OSGeo ISODATA implementation?
Hi Nikos, I'm sorry but it's a long time since I used it, and I received it alredy compiled by a collegue of mine. giovanni 2013/2/24 Nikos Alexandris n...@nikosalexandris.net (Again, correcting typos -- when rushing only mistakes come across!) G. Allegri wrote: I imagine you're aware of this page: http://www.cs.umd.edu/~mount/Projects/ISODATA/ Thanks. Yes I do -- but I can't compile it. The code is C++ and a) I am not a C++ expert, and b) I don't have the time currently to study it. Some quick attempts failed. It requires tweaking since Ubuntu-Linux complains first about Point.cc:49:22: fatal error: iostream.h: No such file or directory [1] then about Point.cc:90:13: error: ‘exit’ was not declared in this scope [2] Is it really easy to get it compiled under (Ubuntu-)Linux? Thanks, Nikos -- [1] http://stackoverflow.com/questions/13103108/why-cant-g-find-iostream-h [2] http://stackoverflow.com/questions/3956636/c-on-linux-not-recognizing- commands-like-exit-and-printf -- Giovanni Allegri website: http://giovanniallegri.it GEO+ geomatica in Italia http://bit.ly/GEOplus ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] OSGeo ISODATA implementation?
I imagine you're aware of this page: http://www.cs.umd.edu/~mount/Projects/ISODATA/ giovanni Sent from Nexus Il giorno 23/feb/2013 21:00, discuss-requ...@lists.osgeo.org ha scritto: Send Discuss mailing list submissions to discuss@lists.osgeo.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.osgeo.org/mailman/listinfo/discuss or, via email, send a message with subject or body 'help' to discuss-requ...@lists.osgeo.org You can reach the person managing the list at discuss-ow...@lists.osgeo.org When replying, please edit your Subject line so it is more specific than Re: Contents of Discuss digest... Today's Topics: 1. OSGeo ISODATA implementation? (Nikos Alexandris) 2. Re: OSGeo ISODATA implementation? (Angelos Tzotsos) 3. Re: OSGeo ISODATA implementation? (Nikos Alexandris) 4. OSGeo ISODATA implementation? (Nick Ves) -- Message: 1 Date: Sat, 23 Feb 2013 17:54:29 +0200 From: Nikos Alexandris n...@nikosalexandris.net To: OSGeo Discussions discuss@lists.osgeo.org Subject: [OSGeo-Discuss] OSGeo ISODATA implementation? Message-ID: 1563385.3Z55nznVM0@vertikal Content-Type: text/plain; charset=us-ascii Hi list! I am searching for an OSGeo implementation (at the very least simply FOSS will do) of the ISODATA clustering algorithm [*]. I want to avoid using a commercial tool. Currently I have reviewed the following options: GRASS-GIS GRASS has a modified k-means implementation in its i.cluster module [1]. However, it requires at least two raster maps to run. The ISODATA algorithm is known to run even on a single raster map. OpenEV The old (but very good) OpenEV (is convenient since it reads directly grass raster maps and) has an integrated ISODATA-based classification tool [2]. While testing with single Landsat bands ranging [0,255] and and NDVI image [-0.1,1.0], it get stuck somehow after some iterations complaining bout ZeroDivisionError: float division. Don't know if there any restrictions concerning the input data format. OrfeoToolBox OrfeoToolBox has also a clustering algorithm [3] but I am unsure that it is an implementation of the ISODATA. Can't trace a clean documentation about it. It seems as yet another k-means based algorithm. Fast ISODATA implementation (by David Mount) (Not tested yet!) Any other candidates? Warmest regards, Nikos -- [*] ISODATA: a) http://www.dtic.mil/cgi- bin/GetTRDoc?Location=U2doc=GetTRDoc.pdfAD=AD0699616 b) http://en.wikipedia.org/wiki/Multispectral_pattern_recognition#ISODATA_method [1] http://grass.osgeo.org/grass64/manuals/i.cluster.html [2] http://openev.sourceforge.net/ [ Sometimes it fails giving following message: --%--- Traceback (most recent call last): File /geo/osgeo/binaries/FWTools-2.0.6/lib/python2.2/site-packages/gtk.py, line 125, in __call__ ret = apply(self.func, a) File ./../tools/isodata.py, line 529, in classify_cb d /= d_tresh ZeroDivisionError: float division ---%-- ] [3] Mean-shift clustering: http://orfeo- toolbox.org/CookBook/CookBooksu17.html#x31-430002.4.4 and http://gracilis.carleton.ca/CUOSGwiki/index.php/Image_Classification_Tutorial_using_Orfeo_Toolbox#Clustering [4] http://www.cs.umd.edu/~mount/Projects/ISODATA/ -- next part -- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 230 bytes Desc: This is a digitally signed message part. URL: http://lists.osgeo.org/pipermail/discuss/attachments/20130223/082adc2c/attachment-0001.pgp -- Message: 2 Date: Sat, 23 Feb 2013 19:23:32 +0200 From: Angelos Tzotsos gcpp.kal...@gmail.com To: discuss@lists.osgeo.org Subject: Re: [OSGeo-Discuss] OSGeo ISODATA implementation? Message-ID: 5128fb14.4070...@gmail.com Content-Type: text/plain; charset=iso-8859-1; Format=flowed Hi Nikos, This is a GPL3 implementation of ISODATA: http://users.ntua.gr/chiossif/Free_As_Freedom_Software/isodata.c Angelos On 02/23/2013 05:54 PM, Nikos Alexandris wrote: Hi list! I am searching for an OSGeo implementation (at the very least simply FOSS will do) of the ISODATA clustering algorithm [*]. I want to avoid using a commercial tool. Currently I have reviewed the following options: GRASS-GIS GRASS has a modified k-means implementation in its i.cluster module [1]. However, it requires at least two raster maps to run. The ISODATA algorithm is known to run even on a single raster map. OpenEV The old (but very good) OpenEV (is convenient since it reads directly grass raster maps and) has an integrated ISODATA-based classification tool [2]. While testing with single Landsat bands ranging [0,255] and and NDVI image [-0.1,1.0], it get stuck somehow after some iterations complaining bout ZeroDivisionError: float division. Don't know if there any restrictions concerning the input data format. OrfeoToolBox OrfeoToolBox
[OSGeo-Discuss] how to produce a Peirce quincuncial map?
As far as I know PROJ4 cannot apply the Peirce quincuncial projection. Does anybody know what libraries/softwares can manage it? giovanni ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] how to produce a Peirce quincuncial map?
Thanks Alex. I will investigate more. It's an odd projection but it has interesting features. Maybe I will try to implement it in proj4... giovanni Sent from Nexus Il giorno 13/ago/2012 18:46, Alex Mandel tech_...@wildintellect.com ha scritto: On 08/13/2012 05:29 AM, G. Allegri wrote: As far as I know PROJ4 cannot apply the Peirce quincuncial projection. Does anybody know what libraries/softwares can manage it? giovanni I've seen it done in GIMP with a plugin, not exactly manageable data but the right output. Other than that there was one proprietary tool I saw once that specialized in oddball projections. Enjoy, Alex ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] MapIgniter Project
Hi Marco, thanks for sharing your project. I was waiting for the announce :) I'm going to download it right now and give it a look. Having work with Kohana I'm glad to see a project with CI. I will give you my feedback as soon as I setup a demo project. I'm going out for holidays this week, so I don't think I will test it before half august. cheers, giovanni ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] MapIgniter Project
I've forgot to ask an important thing: are you going to make a public SCM repository? It would very important to include the community in testing, giving feedback and, eventually, future development of the project. giovanni 2012/7/30 G. Allegri gioha...@gmail.com Hi Marco, thanks for sharing your project. I was waiting for the announce :) I'm going to download it right now and give it a look. Having work with Kohana I'm glad to see a project with CI. I will give you my feedback as soon as I setup a demo project. I'm going out for holidays this week, so I don't think I will test it before half august. cheers, giovanni ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] MapIgniter Project
Marco answered offlist. We have talked about the usefulnes of having a public SCM and a ticketing system. He's almost convinced :D Let's see if this project will attract a team to work on it. Good luck! giovanni 2012/7/30 G. Allegri gioha...@gmail.com I've forgot to ask an important thing: are you going to make a public SCM repository? It would very important to include the community in testing, giving feedback and, eventually, future development of the project. giovanni 2012/7/30 G. Allegri gioha...@gmail.com Hi Marco, thanks for sharing your project. I was waiting for the announce :) I'm going to download it right now and give it a look. Having work with Kohana I'm glad to see a project with CI. I will give you my feedback as soon as I setup a demo project. I'm going out for holidays this week, so I don't think I will test it before half august. cheers, giovanni ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Elsevier call on Theme Issue on Towards Intelligent Geoprocessing on the Web
To all the WPS experts out there ;) http://www.journals.elsevier.com/isprs-journal-of-photogrammetry-and-remote-sensing/call-for-papers/theme-issue-on-towards-intelligent-geoprocessing-on-the-web/ giovanni ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Opensource toolbox for ArcGIS?
Maybe Sextante for ArcGIS (http://www.sextantegis.com/downloads.html)? It's written in Java and uses the ArcGIS Java SDK. giovanni 2012/1/10 Connors, Bernie (SNB) bernie.conn...@snb.ca I recall reading recently about a Toolbox for ArcGIS that implemented some Opensource tools (OGR? GDAL? FWTools?). Does anybody know what this is called. I have tried googling but have not found it yet. -- *Bernie Connors, P.Eng* *Manager – Spatial Data Infrastructure* Land Information Secretariat Service New Brunswick Tel: 506-444-2077 Fax: 506-453-3898 45°56'25.21N, 66°38'53.65W bernie.conn...@snb.ca www.snb.ca/geonb/ ** ** ** ** ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: AW: [OSGeo-Discuss] OSM2NetworkDataset Version 1.1 available
Thanks for your work Ann. I feel it's an important contribution to the interoperability of open and proprietary technologies and data flows. I'm already downloading your thesis ;) giovanni 2011/11/8 Ann Hitchcock a.hitchc...@52north.org No Problem! ** ** Best regards, Ann ** ** *Von:* discuss-boun...@lists.osgeo.org [mailto: discuss-boun...@lists.osgeo.org] *Im Auftrag von *Paolo Cavallini *Gesendet:* Montag, 7. November 2011 12:12 *An:* OSGeo Discussions *Betreff:* Re: AW: [OSGeo-Discuss] OSM2NetworkDataset Version 1.1 available ** ** Il 07/11/2011 12:05, Ann Hitchcock ha scritto: Hi Paolo, Sorry, just wanted to inform not step on any toes! ** ** sorry if I was rude - that's not what I meant all the best. -- Paolo Cavallini See: http://www.faunalia.it/pc ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Opensource library for change detection software development-reg
I don't know if Orfeo Toolbox [1] can offer you the algorithms you need, but it has lot of analysis tools for change detection. giovanni [1] orfeo-toolbox.org 2011/10/13 Chaitanya kumar CH chaitanya...@gmail.com Vinod, GRASS GIS is a good starting point for your search. On Thu, Oct 13, 2011 at 1:22 PM, vinod sharma veenu22sha...@yahoo.comwrote: Dear All Could some one please help me to know about libraries/API's available in open source to develop a software for change detection analysis of microwave data along with the development environment. -- With Regards Veenu ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Any projects dealing with spatial joins?
Thanks Jodi for the news about Getools's Join support work in progress. The WFS 2.0 also specifies (optionally) temporal joins [1]. AFAIK Geotools already implements the Temporal Filters as specififed in FES 2.0, so I suppose the pieces are already there to further improve the proposal including temporal joins... giovanni [1] Par. 7.9.2.5.3.1 in OpenGIS Web Feature Service 2.0 Interface Standard 2011/6/30 Paolo Cavallini cavall...@faunalia.it Il 30/06/2011 00:30, Bruce, Bob (CON) ha scritto: Steve, I’m pretty sure that the QGIS project could use your talents as a C++ developer. They have been talking about table joins for awhile now. Table joins are implemented in QGIS now, in an efficient way. All the best. -- Paolo Cavallini: http://www.faunalia.it/pc ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Advice - alternative to google maps v3 Javascript API????
Hi Mark, using the google APIs thorugh their libraries or thorugh OL doesn't change your licence position. AFAIK you can use their services with no charge unitl you don't strictly make money by means their APIs. Instead you're allowed to provide a commercial service with no fess if you can document that your incomings are not directly connected with the APIs use (eg consulting, advertizing, etc.). Anyway be careful that the Google EULA forbids wrapping their services under different names. OL publish google tiles directly, i.e. it doesn't proxy or wraps the Google services. Here are some Google official notes [1] [2]. giovanni PS: If you need support on OL or webgis client dev in general, me and my company can give it ;) [1] http://code.google.com/intl/it-IT/apis/maps/terms.html [2] http://googlegeodevelopers.blogspot.com/2011/04/updates-to-google-maps-apigoogle-earth.html -- Giovanni Allegri email: giovanni.alle...@gmail.com skype: giovanni_allegri Linkedin: http://it.linkedin.com/in/giovanniallegri Cell: (+39) 347-7067379 Viale Catani n. 4, 59100 Prato (PO) P.IVA 02152740979 Italy http://gis3w.it http://blog.spaziogis.it 2011/6/28 quade m...@websolving.co.uk Hi all I'm trying to develop a vehicle tracking system I'd planned to use the google maps api However, someone mentioned they want lots of money per year to use it, and suggested openlayers instead I'm really confused about the whole thing Can i use openlayers (or anything else) and use the title maps from google maps and still get around the licence issue? I'm a .net developer, but have no experience in maps so have a steep learning curve I would really appreciate some guidance on my options Thanks all Mark -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Advice-alternative-to-google-maps-v3-Javascript-API-tp6524139p6524139.html Sent from the OSGeo Discuss mailing list archive at Nabble.com. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] New AcidMaps with Geoserver plugin
Thanks to XoomCode team! It can be very useful, and it's also a good tutorial for Geoserver/C++ integration ;) giovanni 2011/3/30 Mauricio Miranda mmira...@xoomcode.com Hi there! We finally released the new version of AcidMaps [1] with a great change, it works as a Geoserver plugin. That means you can use your own configured WMS layers to build Heatmaps, Isolines and other interpolated maps ON THE FLY! The team has been working hard and we made a complete rewrite of the core, optimizing the process to make them faster and more accurate. Behind that, we build the Geoserver plugin to make AcidMaps easier to use and more OGC like. Caution! The plugin depends on Geoserver 2.1 (Beta release). The previous releases are not yet supported. For who doesn't know about AcidMaps: * AcidMaps is an open source library that generates interpolated images from a set of valued points in real time. * It's can be used to generate advanced visualizations with point datasets: (e.g.: sales, temperature, atmospheric pressure, population, etc...) You can see a full demo [2] built using Flex/OpenScales where you can play with the parameters to see different results. It is deployed in our own local server and it could get stuck quickly, so please be patient... If you want to give it a try with you own data, take a look to the Quick Start instructions [3], it is really simple! There's a reference doc [4] where you can get more details. Please, let us know your opinion because it's still in beta and your experience will be very helpful. [1] http://acidmaps.org [2] http://acidmaps.org/flex/index.html [3] https://github.com/XoomCode/AcidMaps/ [4] https://github.com/XoomCode/AcidMaps/wiki -- Mauricio Miranda Chief Development Officer http://www.xoomcode.com ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] GEOSHIELD RELEASE
Hi Massimiliano, I've just found the time to have a look to GeoShield. Thanks for it. Just a question: have you considered the Security components provided by 52 North? http://52north.org/communities/security/index.html Giovanni 2010/12/10 Massimiliano Cannata massimiliano.cann...@supsi.ch Dear list, it is a pleasure to announce the release of GeoShield (version 0.2.1). GeoShield is a project born to offer a centralized way to define security access-control to geo-services. It acts like a proxy, intercepting all the communications between clients and OGC compliant services (WMS, WFS, and in future WPS, SOS). GeoShield is able to manage users and groups, it handles authentication and privileges settings among groups and registered services. It is capable to analyse requests applying the filters set to the user and manipulating the response. It is a server side security software to secure OGC services. The interested people can find the source code and a web archive package (.war) ready for Tomcat: - http://code.google.com/p/geoshield/downloads/list While a short installation guide is here (on the project website): - https://sites.google.com/site/geoshieldproject/documentation/installation Because documentation is still very poor, if you have questions or remarks, please don't hesitate to contact us, using this discussion group: http://groups.google.com/group/geoshield-projecthttp://www.google.com/url?sa=Dq=http://groups.google.com/group/geoshield-projectusg=AFQjCNEj17fLeUnSFb-sMb2s3IHLbGIPEQ Regards, Massimiliano and Milan -- Dr. Eng. Massimiliano Cannata Responsabile Area Geomatica Istituto Scienze della Terra Scuola Universitaria Professionale della Svizzera Italiana Via Trevano, c.p. 72 CH-6952 Canobbio-Lugano Tel: +41 (0)58 666 62 14 Fax +41 (0)58 666 62 09 ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Open Source Approaches in Spatial Data Handling - Springer Advances in GIS series
don't sell many copies because they are expensive. :-( This is especially annoying as the authors give them the text for free. So why should we continue to fill this vicious circle? I hope one day a more ethical and fair circuit will be set up by the scientific community ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Open Source Approaches in Spatial Data Handling - Springer Advances in GIS series
Open Source Approaches in Spatial Data Handling - Springer Advances in GIS series http://www.springer.com/series/7712?cm_mmc=other-_-Enews-_-PSE12813_V1-_-7712 giovanni ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] open source polygon cluster aggregation algorithm?
I have to work with plsql, the jts have the right algorithm so I've decided to try it out: wrap the jts inside java stored procedures. It hasn't been straigthforward but it works. Thanks for the hint Mike. Fortunatly gt oracle-spatial plugin has some code to map oracle.sql.STRUCT to JTS geometry, so I've extrapolated the needed classes only, because it was too much to load the whole gt classes in Oracle! giovanni 2010/5/10 Mike Toews mwto...@gmail.com: The recent JTS has a nice buffering options, namely the mitre buffer. It does not have rounded corners, and has been very useful to me (i.e., we can physically survey-out the buffer on the ground with fewer points to locate and stake out). http://lin-ear-th-inking.blogspot.com/2007/12/new-buffer-styles-in-jts-19.html Although I'm no expert at plsql, it appears it can be extended with java, so maybe it could be possible to wrap the Oracle WKT/B(?) through JTS: http://www.devshed.com/c/a/Oracle/Extending-PLSQL-with-Java-Libraries/ Someone must have done this for plsql in the past ... -Mike On 9 May 2010 06:01, G. Allegri gioha...@gmail.com wrote: Hi Stefan. You guessed right, it's buildings generalization. I know jts and geos quite well but unfortunatly I can't use them because I'm working directly on oracle with plsql. I think buffer is the way, but not the one oracle provides because it rounds the corners... Bye, Giovanni 2010/5/7 Stefan Steiniger sst...@geo.uzh.ch: how about using R it has alpha shapes and a-like? What you describe sounds like a problem in map generalization. I.e. the approach of buffering is something what a colleague of mine once implemented to generalize house-blocks for maps (aggregate the single buildings). Unfortunately I don't know of any accessible code for that. If you are proficient in Java or C++ you could make you custom implementation with JTS or Geos (sounds easy to me). on what geographic objects are you working on? and how much does the shape to be need to maintained? stefan G. Allegri wrote: Aside A nice implementation of alpha shapes with jts: http://www.mail-archive.com/jts-de...@lists.jump-project.org/msg01019.html /Aside 2010/5/6 G. Allegri gioha...@gmail.com: Thanks Andrea for the links. Yes, I think the problem is similar, in fact I was also looking for concave hull and alpha shapes algoithms, but the only open solution I've found is from CGAL [1] and... it's too complex to extract and reimplement in my context (database procedural programming). IWe have implemented something very rude: 1 - logically aggregate polyongs in clusters (given a certain distance) 2 - buffer each polygon mantaining the shape (not the usual buffer, which make rounded artifacts) 3 - geometrical union 4 - shrink the result (unbuffer) But I have the time for a long holiday waiting the end of the process :) [1] http://www.cgal.org/Manual/last/doc_html/cgal_manual/Alpha_shapes_2/Chapter_main.html 2010/5/6 Andrea Aime aa...@opengeo.org: G. Allegri ha scritto: I'm looking for an algorithm to do polygon cluster aggregation, similar to the ArcInfo Aggregate Polygon [1]. I know about GEOS Cascaded Union, but I need two more features: 1 - clustering of polygons that fall within a a certain threshold distance from each other 2 - mantain orthogonality, i.e. the original angles/shapes I don't know of any such implementation, but it looks somewhat similar to the computation of a concave hull: http://ubicomp.algoritmi.uminho.pt/local/concavehull.html http://stackoverflow.com/questions/83593/is-there-an-efficient-algorithm-to-generate-a-2d-concave-hull Cheers Andrea -- Andrea Aime OpenGeo - http://opengeo.org Expert service straight from the developers. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] open source polygon cluster aggregation algorithm?
Hi Stefan. You guessed right, it's buildings generalization. I know jts and geos quite well but unfortunatly I can't use them because I'm working directly on oracle with plsql. I think buffer is the way, but not the one oracle provides because it rounds the corners... Bye, Giovanni 2010/5/7 Stefan Steiniger sst...@geo.uzh.ch: how about using R it has alpha shapes and a-like? What you describe sounds like a problem in map generalization. I.e. the approach of buffering is something what a colleague of mine once implemented to generalize house-blocks for maps (aggregate the single buildings). Unfortunately I don't know of any accessible code for that. If you are proficient in Java or C++ you could make you custom implementation with JTS or Geos (sounds easy to me). on what geographic objects are you working on? and how much does the shape to be need to maintained? stefan G. Allegri wrote: Aside A nice implementation of alpha shapes with jts: http://www.mail-archive.com/jts-de...@lists.jump-project.org/msg01019.html /Aside 2010/5/6 G. Allegri gioha...@gmail.com: Thanks Andrea for the links. Yes, I think the problem is similar, in fact I was also looking for concave hull and alpha shapes algoithms, but the only open solution I've found is from CGAL [1] and... it's too complex to extract and reimplement in my context (database procedural programming). IWe have implemented something very rude: 1 - logically aggregate polyongs in clusters (given a certain distance) 2 - buffer each polygon mantaining the shape (not the usual buffer, which make rounded artifacts) 3 - geometrical union 4 - shrink the result (unbuffer) But I have the time for a long holiday waiting the end of the process :) [1] http://www.cgal.org/Manual/last/doc_html/cgal_manual/Alpha_shapes_2/Chapter_main.html 2010/5/6 Andrea Aime aa...@opengeo.org: G. Allegri ha scritto: I'm looking for an algorithm to do polygon cluster aggregation, similar to the ArcInfo Aggregate Polygon [1]. I know about GEOS Cascaded Union, but I need two more features: 1 - clustering of polygons that fall within a a certain threshold distance from each other 2 - mantain orthogonality, i.e. the original angles/shapes I don't know of any such implementation, but it looks somewhat similar to the computation of a concave hull: http://ubicomp.algoritmi.uminho.pt/local/concavehull.html http://stackoverflow.com/questions/83593/is-there-an-efficient-algorithm-to-generate-a-2d-concave-hull Cheers Andrea -- Andrea Aime OpenGeo - http://opengeo.org Expert service straight from the developers. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Re: open source polygon cluster aggregation algorithm?
Hi Stefan. You guessed right, it's buildings generalization. I know jts and geos quite well but unfortunatly I can't use them because I'm working directly on oracle with plsql. I think buffer is the way, but not the one oracle provides because it rounds the corners... Bye, Giovanni 2010/5/7, Stefan Steiniger sst...@geo.uzh.ch: how about using R it has alpha shapes and a-like? What you describe sounds like a problem in map generalization. I.e. the approach of buffering is something what a colleague of mine once implemented to generalize house-blocks for maps (aggregate the single buildings). Unfortunately I don't know of any accessible code for that. If you are proficient in Java or C++ you could make you custom implementation with JTS or Geos (sounds easy to me). on what geographic objects are you working on? and how much does the shape to be need to maintained? stefan G. Allegri wrote: Aside A nice implementation of alpha shapes with jts: http://www.mail-archive.com/jts-de...@lists.jump-project.org/msg01019.html /Aside 2010/5/6 G. Allegri gioha...@gmail.com: Thanks Andrea for the links. Yes, I think the problem is similar, in fact I was also looking for concave hull and alpha shapes algoithms, but the only open solution I've found is from CGAL [1] and... it's too complex to extract and reimplement in my context (database procedural programming). IWe have implemented something very rude: 1 - logically aggregate polyongs in clusters (given a certain distance) 2 - buffer each polygon mantaining the shape (not the usual buffer, which make rounded artifacts) 3 - geometrical union 4 - shrink the result (unbuffer) But I have the time for a long holiday waiting the end of the process :) [1] http://www.cgal.org/Manual/last/doc_html/cgal_manual/Alpha_shapes_2/Chapter_main.html 2010/5/6 Andrea Aime aa...@opengeo.org: G. Allegri ha scritto: I'm looking for an algorithm to do polygon cluster aggregation, similar to the ArcInfo Aggregate Polygon [1]. I know about GEOS Cascaded Union, but I need two more features: 1 - clustering of polygons that fall within a a certain threshold distance from each other 2 - mantain orthogonality, i.e. the original angles/shapes I don't know of any such implementation, but it looks somewhat similar to the computation of a concave hull: http://ubicomp.algoritmi.uminho.pt/local/concavehull.html http://stackoverflow.com/questions/83593/is-there-an-efficient-algorithm-to-generate-a-2d-concave-hull Cheers Andrea -- Andrea Aime OpenGeo - http://opengeo.org Expert service straight from the developers. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- Inviato dal mio dispositivo mobile ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] open source polygon cluster aggregation algorithm?
I'm looking for an algorithm to do polygon cluster aggregation, similar to the ArcInfo Aggregate Polygon [1]. I know about GEOS Cascaded Union, but I need two more features: 1 - clustering of polygons that fall within a a certain threshold distance from each other 2 - mantain orthogonality, i.e. the original angles/shapes Both can be achieved with the ArcInfo tool... thanks a lot, Giovanni [1] http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=aggregate_polygons_%28data_management%29 ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] open source polygon cluster aggregation algorithm?
Thanks Andrea for the links. Yes, I think the problem is similar, in fact I was also looking for concave hull and alpha shapes algoithms, but the only open solution I've found is from CGAL [1] and... it's too complex to extract and reimplement in my context (database procedural programming). IWe have implemented something very rude: 1 - logically aggregate polyongs in clusters (given a certain distance) 2 - buffer each polygon mantaining the shape (not the usual buffer, which make rounded artifacts) 3 - geometrical union 4 - shrink the result (unbuffer) But I have the time for a long holiday waiting the end of the process :) [1] http://www.cgal.org/Manual/last/doc_html/cgal_manual/Alpha_shapes_2/Chapter_main.html 2010/5/6 Andrea Aime aa...@opengeo.org: G. Allegri ha scritto: I'm looking for an algorithm to do polygon cluster aggregation, similar to the ArcInfo Aggregate Polygon [1]. I know about GEOS Cascaded Union, but I need two more features: 1 - clustering of polygons that fall within a a certain threshold distance from each other 2 - mantain orthogonality, i.e. the original angles/shapes I don't know of any such implementation, but it looks somewhat similar to the computation of a concave hull: http://ubicomp.algoritmi.uminho.pt/local/concavehull.html http://stackoverflow.com/questions/83593/is-there-an-efficient-algorithm-to-generate-a-2d-concave-hull Cheers Andrea -- Andrea Aime OpenGeo - http://opengeo.org Expert service straight from the developers. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] open source polygon cluster aggregation algorithm?
Aside A nice implementation of alpha shapes with jts: http://www.mail-archive.com/jts-de...@lists.jump-project.org/msg01019.html /Aside 2010/5/6 G. Allegri gioha...@gmail.com: Thanks Andrea for the links. Yes, I think the problem is similar, in fact I was also looking for concave hull and alpha shapes algoithms, but the only open solution I've found is from CGAL [1] and... it's too complex to extract and reimplement in my context (database procedural programming). IWe have implemented something very rude: 1 - logically aggregate polyongs in clusters (given a certain distance) 2 - buffer each polygon mantaining the shape (not the usual buffer, which make rounded artifacts) 3 - geometrical union 4 - shrink the result (unbuffer) But I have the time for a long holiday waiting the end of the process :) [1] http://www.cgal.org/Manual/last/doc_html/cgal_manual/Alpha_shapes_2/Chapter_main.html 2010/5/6 Andrea Aime aa...@opengeo.org: G. Allegri ha scritto: I'm looking for an algorithm to do polygon cluster aggregation, similar to the ArcInfo Aggregate Polygon [1]. I know about GEOS Cascaded Union, but I need two more features: 1 - clustering of polygons that fall within a a certain threshold distance from each other 2 - mantain orthogonality, i.e. the original angles/shapes I don't know of any such implementation, but it looks somewhat similar to the computation of a concave hull: http://ubicomp.algoritmi.uminho.pt/local/concavehull.html http://stackoverflow.com/questions/83593/is-there-an-efficient-algorithm-to-generate-a-2d-concave-hull Cheers Andrea -- Andrea Aime OpenGeo - http://opengeo.org Expert service straight from the developers. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Any thoughts on the potential for using Seadragon as a map browsing interface?
Another tool in the basket: Zoomify. http://www.zoomify.com/ One of the new features in Oopenlayers 2.9 is the support to its data structure... giovanni 2010/4/28 Gavin gavinjflem...@gmail.com Another technology that does amazing things with panoramic photos and is just waiting to be applied to maps is http://www.gigapan.org/ (Seadragon works fine on my Ubuntu 64) On Wed, 2010-04-28 at 08:26 +0200, Paolo Cavallini wrote: Andrea Aime ha scritto: Landon Blake ha scritto: I’m not a web developer, but it seemed like the tech could be used for browsing high-resolution map images. http://www.seadragon.com/ Does not work at all on my Ubuntu 64 bit. Sigh... Strange, it does smoothly on my Debian unstable, also 64 bit. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] What GeoSpatial Open Source Software do Surveyors use?
Some collegues of mine use this LIS DESKTOP [1] fromLaserData. It's a proprietary/commercial module for SAGA [2]: [1] http://www.laserdata.at/prod_desk.html [2] www.saga-gis.org Giovanni 2010/4/2 Markus Neteler nete...@osgeo.org: Cameron, On Thu, Apr 1, 2010 at 10:16 PM, Cameron Shorter cameron.shor...@gmail.com wrote: Thank you Marina, (small correction: Maria) That is a good example. To be complete, could you also answer: * What would be the proprietary equivalent software you would use? I'll leave that to Maria. * Why did you decide to use GRASS instead of proprietary software? (Hopefully more than it was cheaper) ... note that she actually *author* of the code. She and her team have developed it over the last years. * It seems you are officiated with a University? She is professor there. Industry is more convinced by case studies that come out of industry, as universities are often associated with smart geeks, who have a high tollerance to things going wrong because they can fix it themselves. Is there a non-education affilition you can draw upon? Did you do this work for a governement department or similar? I leave this again to Maria. Best Markus maria.brove...@diiar-topo.polimi.it wrote: Dear Cameron if you are interested also in LiDAR data filtering (to obtain from the LiDAR point cloud the digital terrain model), we developed commands into GRASS. They have to be used in sequence. http://grass.osgeo.org/gdp/html_grass64/v.lidar.edgedetection.html http://grass.osgeo.org/gdp/html_grass64/v.lidar.growing.html http://grass.osgeo.org/gdp/html_grass64/v.lidar.correction.html http://grass.osgeo.org/gdp/html_grass64/v.surf.bspline.html A detailed description is available here: http://www.foss4g2006.org/getFile.py/access?contribId=48sessionId=59resId=7materialId=slidesconfId=1 a more recent and summarised version can be found here: http://geomatica.como.polimi.it/corsi/remote_sensing/LiDAR_filtering_with_GRASS-lab4.pdf We worked also on calibration of the filtering parameters (around 20 parameters) by integrating the USGS UCODE and GRASS. Details are available here: http://www.isprs.org/proceedings/XXXVIII/1_4_7-W5/paper/Brovelli-126.pdf I hope it helps. Cheers. Maria - Cameron Shorter cameron.shor...@gmail.com wrote: I'm giving a presentation on GeoSpatial Open Source at the international Surveyors conference here in Sydney. http://www.fig2010.com/ I'd like advice on what use cases and Open Source packages I should focus on during the presentation. Feedback from Surveyors welcomed. -- Cameron Shorter Geospatial Solutions Manager Tel: +61 (0)2 8570 5050 Mob: +61 (0)419 142 254 Think Globally, Fix Locally Geospatial Solutions enhanced with Open Standards and Open Source http://www.lisasoft.com ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- Files attached to this email may be in ISO 26300 format (OASIS Open Document Format). If you have difficulty opening them, please visit http://iso26300.info for more information. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss This message was sent using IMP, the Internet Messaging Program. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- Cameron Shorter Geospatial Solutions Manager Tel: +61 (0)2 8570 5050 Mob: +61 (0)419 142 254 Think Globally, Fix Locally Geospatial Solutions enhanced with Open Standards and Open Source http://www.lisasoft.com ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Re: Whitebox GAT (Chris Puttick)
Very nice thread. This topic once a while comes back on our screens. My two cents. After various years of talks with OS and purists and not, software farms, university departments, etc. from back to white visions, passing through grey, I've pacified with my questions about where is the truth: it is where a solution that solves your needs is. All the rest is personal preference or, worst, hideology. The need can go from a personal scale to a global one, requiring different approaches if we're talking about a self-employed practitioner, a local administration, a multinational farm, or FAO. Forgive me but I think this discussions are non-sense, because, using the first topic, the is no absolute metric to say .NET is worst then Java,C++,or whatelse. In these days I suggested a customer to use ArcGIS Server for their needs. The day before I was configuring Postgresql and Geoserver for another one. Last line. When I discover new softwares being shared I really don't care very much what technology they used to make, I just wonder if it brings new ideas, solutions, etc. that can help our needs. Recently I've set up an algorithm in Python, taking ideas from three different softwares: one was written in C#, one in C++, and one in Java. They were quite different, but each one brought complementary ideas that helped me to solve my problem. This is what I like from software sharing. giovanni 2010/3/26 Brian Russo br...@beruna.org On Fri, Mar 26, 2010 at 11:54 AM, Chris Puttick chris.putt...@thehumanjourney.net wrote: Terribly off-topic now, so feel free to stop reading... Yes.. if anyone wants to ping me offline about this feel free.. ...not realising high or often any business value. Business value is where what you expend money and get more in return than you spent. Incredibly easy to measure in small businesses with few employees and a simple business model, harder the larger the business or the more complex the concept of value becomes e.g. in a charity or government organisation. There is good evidence that collectively western economies have spent more on IT than they have realised in value. I 100% agree that most IT procurement is terrible. People go after 'shiney' technology that solves an immediate perceived requirement but do not go through the more expensive (in the short term) work of really assessing how their IT infrastructure is actually enabling/supporting their business processes. However this has absolutely nothing whatsoever to do with how the software is licensed. You can make similarly horrible decisions using open source software… proprietary... whatever. It doesn’t matter. Remember all the crappy linux based phones out there? They sucked until we got Android ones. Companies would have gotten better value using blackberries or something before that time The true reason people end up in that situation is because the technology they bought isn’t supporting their business properly. It’s like buying a gym membership you never use. Does that mean the gym sucks? It might, but all it really means is that you're not getting value out of the cost you expended. It doesn't tell you why. The business case is not simple, any more than it is in marketing; but here's my base position in simple terms. I select solutions that maximise our future choices and reduce our costs; a further benefit is derived if I can move any remaining costs from fixed annual overhead to per employee or pure capital; while there may be short term pain as people get used to the changes, any increase in costs for that short period will be more than offset by the long term decrease in costs and increases in flexibility for the organisation. This is where I disagree with you. If you focus on cost as the thing to reduce you will more often than not lose. Lowering cost should be an incidental outcome that happens as a result of increasing value and efficiency. It's quite possible to end up spending more money on IT than you were in the first place (more frequently you end up spending it in the right places instead of the wrong and net overall IT savings) - but if your overall business value has increased more or commensurately then spending more is probably the right outcome. Luckily for me I don't have to justify to others other than in my long term results. I'm aware that this continues to be a rare privilege for the top of the information systems tree and that many organisations continue to not have technical expertise at the highest level, resulting in many decisions in that area being taken with the wrong information and wrong motivations. I'm working on that too. I would instead argue that the main problem is a lack of differentiation between CIOs and CTOs. Most organisations involved in IT are still primarily technology-driven in terms of their procurement - rather than remembering that their IT is only a means to an end (supporting business processes content).
Re: [OSGeo-Discuss] looking for introductory material on cartography
Thanks everyone again for the response my request has had. I didn't hope in so much sharing :) It's been important for the ngo itself to recognize the value of this community and it's open source mind. I will share the blog I'm going to setup for the course, in which I will also gather your materials (with the respective citings) and the one I will prepare. I'll let you know. Have a good week, Giovanni 2009/10/31 Craig Miller craig.mil...@spatialminds.com: I didn't see what the original link was, but the Geographer's Craft is an excellent resource http://www.colorado.edu/geography/gcraft/notes/notes.html Craig -Original Message- From: discuss-boun...@lists.osgeo.org [mailto:discuss-boun...@lists.osgeo.org] On Behalf Of Ian Turton Sent: Saturday, October 31, 2009 12:49 PM To: OSGeo Discussions Subject: Re: [OSGeo-Discuss] looking for introductory material on cartography On Fri, Oct 30, 2009 at 6:52 PM, G. Allegri gioha...@gmail.com wrote: Thnaks Ian. That's a really interesting material, but it's out of our course scope. I need something about basic geodesy, coordinates systems, etc. ah geography not cartography - try https://www.e-education.psu.edu/natureofgeoinfo/ (browse all the PSU offerings at http://open.ems.psu.edu/courseware) Ian -- Ian Turton ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.698 / Virus Database: 270.14.37/2466 - Release Date: 10/31/09 00:53:00 ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] looking for introductory material on cartography
I'm going to teach a course (mostly as volunteer time) on GIS basics and GPS surveying for an ONG in Africa. The first two days they will self-teach cartography basics, then I'll begin from GIS, etc. They asked me if I could indicate them some links to free introductory material on cartography (earth shape, coordinates, maps, reference systems, projections, etc.). Does anybody know web resources, or could share copyleft tutorials/manuals/etc on the subject? I've found something googling, from wikipedia to some sparse course chapters, but I would like to find structured, clean and easy, stuff. Am I asking too much? Thanks very much, Giovanni ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] looking for introductory material on cartography
Thanks you very much for your replies. Nimalika, I would really like to have a look at your material. I'm mostly interested in cartography basics, but a look at the rest would be helpful too. I will produce ad-hoc presentations on GIS (and Qgis usage) and GPS, and I could share them after the course. Jody, thank's for the tip. I will wait for foss4g material. giovanni 2009/10/30 Jody Garnett jody.garn...@gmail.com: You may wish to look at some of the materials coming out of the the FOSS4G conference; I think the making maps pretty workshop will be up shortly as a PDF for example and it has an overview of the cartography/communication side of maps. Jody On 30/10/2009, at 9:06 PM, nimalika fernando wrote: Hi, I was involved in doing some introductory level GIS unit ( not for geography people) in Asia last year. Once I was asked to do that course, I faced the same situation as you. We are working under very tight cost constraints and cannot use costly material or ask people to use such. I have prepared some presentations for the course with lot of supporting material from freely available web resources/ diagrams etc. That does not cover sufficient level of GPS surveying . There are few basic level tutorials I have prepared on using software to prepare maps also. I have used QGIS /Udig as the software. Do you like to have a look at them ? If so I may be able to provide an access code for this material available in their website. You may use them if useful for your purpose. Goodluck! Nimalika On Fri, Oct 30, 2009 at 2:35 PM, G. Allegri gioha...@gmail.com wrote: I'm going to teach a course (mostly as volunteer time) on GIS basics and GPS surveying for an ONG in Africa. The first two days they will self-teach cartography basics, then I'll begin from GIS, etc. They asked me if I could indicate them some links to free introductory material on cartography (earth shape, coordinates, maps, reference systems, projections, etc.). Does anybody know web resources, or could share copyleft tutorials/manuals/etc on the subject? I've found something googling, from wikipedia to some sparse course chapters, but I would like to find structured, clean and easy, stuff. Am I asking too much? Thanks very much, Giovanni ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- Nimalika Fernando http://nimalika.blogspot.com/ ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] looking for introductory material on cartography
Thnaks Ian. That's a really interesting material, but it's out of our course scope. I need something about basic geodesy, coordinates systems, etc. thank you anyway. giovanni ps: wouldn't it be useful to gather such introductory resources under the Education and Curriculum pages of the OSGeo wiki [1]? [1] http://wiki.osgeo.org/wiki/Education_and_Curriculum_Committee 2009/10/30 Ian Turton ijtur...@gmail.com: On Fri, Oct 30, 2009 at 5:05 AM, G. Allegri gioha...@gmail.com wrote: I'm going to teach a course (mostly as volunteer time) on GIS basics and GPS surveying for an ONG in Africa. The first two days they will self-teach cartography basics, then I'll begin from GIS, etc. They asked me if I could indicate them some links to free introductory material on cartography (earth shape, coordinates, maps, reference systems, projections, etc.). Does anybody know web resources, or could share copyleft tutorials/manuals/etc on the subject? I've found something googling, from wikipedia to some sparse course chapters, but I would like to find structured, clean and easy, stuff. Am I asking too much? How about https://www.e-education.psu.edu/geog486/? It's CC BY NC SA Ian -- Ian Turton Sent from State College, Pennsylvania, United States ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] GISVM Server Release Candidate 1 is publicly available
Thanks Ricardo, it seems a great work! I will test it for my next student classrooms. Giovanni 2009/10/1 Ricardo Pinho rpinho_...@yahoo.com.br GISVM ANNOUNCEMENT – 2009.09.28: 1. RELEASE CANDIDATE 1 of “GISVM SERVER” is now publicly available at: http://gisvm.com Full release details can be found at: http://gisvm.com/wiki/index.php?title=GISVM_Server_-_Release_Candidate_1_-_20090831 2. I’m also proud to announce that “I’m speaking” at Sydney FOSS4G 2009 on behalf of the GISVM project: http://www.gisvm.com/blog/?p=133 3. GISVM Server download is now only available for a DISTRIBUTION FEE OF 10 EUROS!!! THIS IS MEANT TO HELP REDUCE MY PERSONAL COSTS FOR THE TRIP, HOTEL and EVENT REGISTRATION that are going to be up to 5.000 US Dollars! Remember - GISVM IS AN UNSPONSORED PROJECT!!! If you consider it a useful and worthy project, PLEASE CONTRIBUTE TOWARDS GISVM's PRESENCE AT FOSS4G 2009. THANK YOU!!! 4. GISVM Help Wiki is now available for documentation of GISVM: http://gisvm.com/wiki ** GISVM Server Release Candidate 1 - ANNOUNCEMENT DETAILS: ** GIS Virtual Machine Server is another product based on the GISVM new concept for Free Open Source Geospatial Software distribution. This GISVM Server edition is based on Ubuntu Server operating system and several free open source server softwares. Run this Virtual Machine on your computer and instantly get a personal GIS Server running in the background, just as if you had a new server computer on your local network, ready to use with your favorite GIS desktop application! On the Virtual Machine Server you will find several geospatial and location web services based on OGC Open Geospatial Standards, such as: WMS, WFS, WCS, WPS, etc. So, GISVM Server also offers an easy way into OGC Open Geospatial Standards and benefits from the power of real interoperability. The GISVM Server includes: - Ubuntu 9.04 Server Edition JeOS (Just enough OS) - LAMP Server bundle (Linux, Apache, MySQL and PHP) - Samba File Server - Tomcat Java Server - PostgreSQL database server - PostGIS (PostgreSQL spatial extension), ZigGIS and FDO ready! - Mapserver - Geoserver - Deegree - Geonetwork - Webmin (a web-based interface for GISVM Server administration) If you think this is a useful and interesting product, please help us to improve it with your participation on the testing forum board: http://gisvm.com/forum/index.php?board=6.0 Thank you for your time and collaboration! Best regards, Ricardo Pinho Veja quais são os assuntos do momento no Yahoo! +Buscados http://br.maisbuscados.yahoo.com ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Next 5 years for OSGeo
Libraries and tools that can be used across different OSGEO apps. +1, from a software point of view. I can compare my experience as a user and programmer in the last five years with OSGeo (and other FOSS tools) against my parallel experience with ArcGIS, Erdas, Isatis, etc. A very sinthetic resume: Many people are aware of the potentialities of many OSGeo softwares, thanks also to foundation libraries like GDAL. The problem is the step from potential to daily use. I know that ideally everyone could contribute to higher level features (sponsorship, dev, testing, docs, etc.), but the step from ideality to practice still keeps many practitioners bound to more integrated, full featured, softwares (first of all ArcGIS). I see a main problem to this: FOSS gis still suffers lack of data model and user experirence consistency. The OS freedom is a coin: one face shows all the benefits of independent communities, etc. while the other makes it appear a big confused arena to the most users... I would support more and more the development and sharing of low level, generic libraries. algorithms, cartograhpic, but also data structures (I'm working hard to produce a seemless integration between SAGA and QGis, and the work is prominently dedicated to this). This would facilitate the OSGeo software integration and so the building of full featured products (QGis GUI + GRASS/SAGA algorithms + R analysis + = something more similar to commercial stacks), and would help the interfacing with the rest of the world. +1 for OSGeo Edu, and the Journal. giovanni ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Using GPL for geospatial software in a commercial application.
Hi Landon. If understand correctly you use AutoLISP to produce interpreted helper scripts, so you don't create binary libraries to be statically (in this case GPL is an issue) or dynamically (there are various interpretations in this case) linked, am I right? AFAIK you can keep your code GPL until the programs that use it don't link it in their binaries. If they use it like a service and don't incorporate your code in their one, the two licences can be considered decoupled. giovanni 2009/7/15 Landon Blake lbl...@ksninc.com I’m working on a group of AutoLISP scripts for IntelliCAD and AutoCAD that increase cooperation between these CAD programs and FOSS GIS software. (For example: One set of my scripts allows CAD users to export drawing geometry in OGC WKT format.) I’d like to release these scripts under Version 3 of the GPL, but I’m not sure if this is possible. The scripts are read by proprietary CAD programs, and I don’t have the power to release the code for these programs under the GPL. Must I use something like the LGPL or another non-viral license? I’ve never written open source code utilized by a proprietary program in this way, but I’m hoping some of you have dealt with this issue before. Thanks for any suggestions. Landon *Warning: *Information provided via electronic media is not guaranteed against defects including translation and transmission errors. If the reader is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this information in error, please notify the sender immediately. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Using GPL for geospatial software in a commercial application.
Ok, so I have a double issue :) If it went into SPAM it was deleted (my spam is empty now)... Qgis wiki admins: As you can see *I AM* the 'giohappy' account (you can see it because this is the email address I've registered). So, alternately: - can you confirm me manually? - can you delete my account? I will recreate it then... thx, giovanni 2009/7/15 Christopher Schmidt crschm...@crschmidt.net On Tue, Jul 14, 2009 at 04:12:14PM -0700, Landon Blake wrote: I'm working on a group of AutoLISP scripts for IntelliCAD and AutoCAD that increase cooperation between these CAD programs and FOSS GIS software. (For example: One set of my scripts allows CAD users to export drawing geometry in OGC WKT format.) I'd like to release these scripts under Version 3 of the GPL, but I'm not sure if this is possible. The scripts are read by proprietary CAD programs, and I don't have the power to release the code for these programs under the GPL. The GPL requirements for this case are only when you 'distribute' the work. I'm assuming you don't expct that people will take your scripts, build them into the CAD programs, and then 'distribute' them togther. So long as that is the case, it seems likely that this won't be an issue: your code is GPL, and you're not 'shipping' their code, or at least not outside 'mere aggregation' (which doesn't drag in derivative clauses). So, I can't see any likely problems with this. IANAL, -- Christopher Schmidt Web Developer ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Re: [Qgis-user] QGIS donations
or allocating directly a developer to help fixing up bugs, etc. this is one of the features I've suggested for the founding system some time ago. How can it be done? Is it something one should manage by himself, contacting directly the developer? thanks, giovanni ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] osgeo4w setup.exe source code?
Hello list. Thanks everyone for the great work done with OSGeo4W. I have a strange (maybe) question. I suppose that osgeo4w setup.exe is a fork of the cygwin's setup. Is it possible to view/download its source code? Thanks, Giovanni ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] osgeo4w setup.exe source code?
Thanks Frank! 2009/2/25 Frank Warmerdam warmer...@pobox.com: G. Allegri wrote: Hello list. Thanks everyone for the great work done with OSGeo4W. I have a strange (maybe) question. I suppose that osgeo4w setup.exe is a fork of the cygwin's setup. Is it possible to view/download its source code? Giovanni, Yes, it is available in svn at: http://svn.osgeo.org/osgeo4w/trunk/setup/ Some more information it is available at: http://trac.osgeo.org/osgeo4w/wiki/SetupDevelopment Best regards, -- ---+-- I set the clouds in motion - turn up | Frank Warmerdam, warmer...@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] RE: [Majas-dev] [Majas-users] Flex in geomajas
OpenScales is a very new project aiming at building with Flex something similar to OpenLayers. Hi Benjamin. I didn't know about this project. Is there any demo, screenshot, or similar? ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] RE: [Majas-dev] [Majas-users] Flex in geomajas
I've worked for some months on Flex (and on Extjs at the same time). I think it's a very powerful framework that boosts the productivity, easy to program, with lots of support resources. Ok, it's Adobe, it depends on Flash players, and so on (and it worths thinking twice to adopt it) so, my idea is always the same: the choice depends on the business target, and what you want from it. I've reached high vectorial interactivity on heavy geometries with few lines of code. My boss asked me edge cutting animated charts, interaction between charts and map features, on hundreds classes of statistical indicators... Flex has been the easier and faster answer. For a general purpose gis client I wouldn't like to have ONLY a Flex interface. But it could be an important, and unique feature, for the OS world of GIS, like the double clients in ArcGIS Server: ArcGIS JS API and Flex API. The best from both. 2009/2/24 P Kishor punk.k...@gmail.com: On Tue, Feb 24, 2009 at 7:01 AM, Leonardo Mateo leonardoma...@gmail.com wrote: On Tue, Feb 24, 2009 at 7:25 AM, Dirk Frigne dirk.fri...@dfc.be wrote: Sorry for the cross posting, but I found an interesting mail about performance and webmapping in the majas developers list. Today, Geomajas is written in Java for the server part, and uses Javascript in the frontend. Although the performance is good enough to support a proper amount of editable objects, we always are looking to mechanisms to improve the speed and usability of the front end. Pieter has done some tests with the Flex technology and they are very promising(details in his mail attached). Should it be a problem for distribution that the technology is shipped in the form of an installable plug-in instead of native browser technology such as VML or SVG, or isn't that an issue? And who has experience with this technology? I would appreciate your feedback ... Ok, here's my grain of sand. I don't know what geomajas is, so I don't know how much Flex would impact on this. I've been working with Flex from the past two years or so, now a days a little less intensive, but still working. I've worked with two or three map API's for Flex and I have to say that totally worth it. About the speed, I haven't seen any benchmark bu ActionScript3 should be way faster than JavaScript and should work fine with large amount of data, wether you use raw XML or some other technology such as AMF*. About the downside Pieter mention there, I think in these days, the Flash plugin is something you should have on a browser, it is not a strange requirement anymore. However, you shouldn't confuse Flash with Flex, even when a Flex application is a Flash movie, their are used for completly different things and can work togheter since you can, from Flex, use resources from an swf made in Flash. Anyway, my opinion is: go for it if your UI is complex enough, Flex allows you to build a really complex, advanced UI with advanced widgets that looks, performs and behaves really good. Programming AS is way much easier than JavaScript (I come from a JS background too) not to mention modularization possibilites with Flex Modules and Libraries also, you should reduce the browser compatibility issues in a 95% at least. I too don't know what geomajas is, and Flex may or may not be the best solutinon for it, but consider that Flex/Flash are not supported on iPhone, and probably never will be. Actually, I don't know much about Flash/Flex as well, but I am assuming that even though they are different products, they produce the same SWF end result, and require a Flash player/plugin on the client, and Flash is a huge CPU hog. Ever since I installed ClickToFlash (http://github.com/rentzsch/clicktoflash/) on my Macbook, I am a happy camper. So, if you don't mind geomajas to not be accessible to the largest mobile web platform, Flex/Flash may well be a good solution. -- Puneet Kishor http://www.punkish.org/ Nelson Institute for Environmental Studies http://www.nelson.wisc.edu/ Open Source Geospatial Foundation (OSGeo) http://www.osgeo.org/ Sent from: Madison WI United States. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] New Job Opportunity with FBK-MPBA
I've filled a new job opportunity with FBK-MPBA (Trento-Italy) on the Jobs Board http://wiki.osgeo.org/wiki/Jobs_Board Giovanni ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] European Union Satellite Centre: EUSC Software Days
Anyone partecipating from the OS community? http://www.eusc.europa.eu/index.php?option=com_contenttask=viewid=46Itemid=15 Giovanni ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
