From ari.jolma at tkk.fi Sat May 3 10:18:22 2008 From: ari.jolma at tkk.fi (Ari Jolma) Date: Sat, 03 May 2008 11:18:22 +0300 Subject: [Freegis-list] Geovisualization / mapping library Message-ID: <481C1FCE.1000206@tkk.fi> I've started a geovisualization / mapping library project. The library depends on GDAL and GNOME (especially Rsvg and Cairo) related libraries. There are others but these are my choices. C is my choice as the programming language (it is used by many GNOME libraries). My use case will mostly be interactive desktop visualization, so I'm interested in speed and explorative features. The beginnings are at http://map.hut.fi/files/gvl/. The library can currently draw points, lines and polygons on a Cairo surface. The idea is to use Pango text rendering. Raster will be drawn with vector symbolizers or (to image surface) pixel based. Classification or interpolation will be done with user supplied callback functions for filtering. The data model of the library attempts to be similar to the OGC symbology encoding (se) so that it would be possible to create symbolizers from se XML files and vice versa. However, parsing and creating XML files is probably out of the scope of this library. This project is related to the OSGeo Cartographic Library proposal: http://wiki.osgeo.org/wiki/OSGeo_Cartographic_Library If anybody is interested in collaboration, please let me know. Regards, Ari -- Prof. Ari Jolma Geoinformatiikka / Geoinformatics Teknillinen Korkeakoulu / Helsinki University of Technology tel: +358 9 451 3886 address: POBox 1200, 02015 TKK, Finland Email: ari.jolma at tkk.fi URL: http://www.tkk.fi/~jolma From mateusz at loskot.net Sat May 3 17:38:54 2008 From: mateusz at loskot.net (Mateusz Loskot) Date: Sat, 03 May 2008 17:38:54 +0200 Subject: [Freegis-list] Geovisualization / mapping library In-Reply-To: <481C1FCE.1000206@tkk.fi> References: <481C1FCE.1000206@tkk.fi> Message-ID: <481C870E.4030500@loskot.net> Ari Jolma wrote: > This project is related to the OSGeo Cartographic Library proposal: > http://wiki.osgeo.org/wiki/OSGeo_Cartographic_Library Ari, It's very interesting though the general idea is a bit vague to me. I've read the Wiki page and I'm still unable to grab the core of this idea. So, if you don't mind, I'd like to ask some questions: 1. Is this idea about creating something like libgd (http://libgd.org) for GIS - not another geometry rendering engine, but a renderer specialized for GIS and cartpgraphy? 2. What are the key differences to MapServer and Mapnik? 3. Why GNOME libraries but not something multiplatofrm in terms of desktop environments? 4. How does it relate to FOSS desktop applications like QGIS? Is the library going to serve as desktop GIS core in future (like desktop GIS for GNOME)? Greetings -- Mateusz Loskot http://mateusz.loskot.net From ari.jolma at tkk.fi Sat May 3 18:12:24 2008 From: ari.jolma at tkk.fi (Ari Jolma) Date: Sat, 03 May 2008 19:12:24 +0300 Subject: [Freegis-list] Geovisualization / mapping library In-Reply-To: <481C870E.4030500@loskot.net> References: <481C1FCE.1000206@tkk.fi> <481C870E.4030500@loskot.net> Message-ID: <481C8EE8.3080406@tkk.fi> Mateusz Loskot kirjoitti: > Ari Jolma wrote: >> This project is related to the OSGeo Cartographic Library proposal: >> http://wiki.osgeo.org/wiki/OSGeo_Cartographic_Library > > Ari, > > It's very interesting though the general idea is a bit vague to me. > I've read the Wiki page and I'm still unable to grab the core of this > idea. So, if you don't mind, I'd like to ask some questions: > > 1. Is this idea about creating something like libgd (http://libgd.org) > for GIS - not another geometry rendering engine, but a renderer > specialized for GIS and cartpgraphy? Basically yes. > > 2. What are the key differences to MapServer and Mapnik? There aren't really so many. The technology is one (Cairo instead of AGG) and the idea to limit the scope to just the rendering but at the same time trying to be more flexible towards explorative visualization etc. But I really can't tell, I'm not intimate with either of those and every time I look they have evolved. I plan to use GDAL as the only data source but I anticipate use cases which require stretching the GDAL data model a bit. For example layers of features with differing schemas and possibly multiple geometries. > > 3. Why GNOME libraries but not something multiplatofrm in terms of > desktop environments? Personal choice ;) -- interoperates well with the other stuff I do. GTK (the foundation of GNOME) is multiplatform. What do you mean by "something multiplatform"? > > 4. How does it relate to FOSS desktop applications like QGIS? Is the > library going to serve as desktop GIS core in future (like desktop GIS > for GNOME)? QGIS uses Qt, which is similar in functionality to GTK but different. I'm surely going to use the library as a building block for a GTK "geocanvas" and then use the geocanvas as a building block for geo applications. I'll probably use Perl for most of the canvas and the apps. This will (hopefully) replace some graphics code I have now in libral. It would be interesting if this library could evolve into something more broadly used by the GTK/GNOME community. Ari > > Greetings -- Prof. Ari Jolma Geoinformatiikka / Geoinformatics Teknillinen Korkeakoulu / Helsinki University of Technology tel: +358 9 451 3886 address: POBox 1200, 02015 TKK, Finland Email: ari.jolma at tkk.fi URL: http://www.tkk.fi/~jolma From mateusz at loskot.net Tue May 6 10:15:24 2008 From: mateusz at loskot.net (Mateusz Loskot) Date: Tue, 06 May 2008 10:15:24 +0200 Subject: [Freegis-list] Geovisualization / mapping library In-Reply-To: <481C8EE8.3080406@tkk.fi> References: <481C1FCE.1000206@tkk.fi> <481C870E.4030500@loskot.net> <481C8EE8.3080406@tkk.fi> Message-ID: <4820139C.6010200@loskot.net> Ari Jolma wrote: > Mateusz Loskot kirjoitti: >> Ari Jolma wrote: >>> This project is related to the OSGeo Cartographic Library proposal: >>> http://wiki.osgeo.org/wiki/OSGeo_Cartographic_Library >> >> It's very interesting though the general idea is a bit vague to me. >> I've read the Wiki page and I'm still unable to grab the core of this >> idea. So, if you don't mind, I'd like to ask some questions: >> >> 1. Is this idea about creating something like libgd (http://libgd.org) >> for GIS - not another geometry rendering engine, but a renderer >> specialized for GIS and cartpgraphy? > > Basically yes. OK >> 2. What are the key differences to MapServer and Mapnik? > > There aren't really so many. The technology is one (Cairo instead of > AGG) and the idea to limit the scope to just the rendering but at the > same time trying to be more flexible towards explorative visualization > etc. But I really can't tell, I'm not intimate with either of those and > every time I look they have evolved. I understand. > I plan to use GDAL as the only data source but I anticipate use cases > which require stretching the GDAL data model a bit. For example layers > of features with differing schemas and possibly multiple geometries. GDAL use is an advantage for me :-) >> 3. Why GNOME libraries but not something multiplatofrm in terms of >> desktop environments? > > Personal choice ;) -- interoperates well with the other stuff I do. GTK > (the foundation of GNOME) is multiplatform. OK > What do you mean by "something multiplatform"? I mean not multiplatofrm across operating systems but desktop environments. There is some feeling like Gtk targets GNOME (or Xfce), Qt targets KDE. Certainly, Gtk works under KDE and Qt under GNOME, but there is a lot of layers specific to each of these environments. Anyway, I was just curious and the "personal choice" answers my question :-) >> 4. How does it relate to FOSS desktop applications like QGIS? Is the >> library going to serve as desktop GIS core in future (like desktop GIS >> for GNOME)? > > QGIS uses Qt, which is similar in functionality to GTK but different. Yes > I'm surely going to use the library as a building block for a GTK > "geocanvas" and then use the geocanvas as a building block for geo > applications. I'll probably use Perl for most of the canvas and the > apps. This will (hopefully) replace some graphics code I have now in > libral. Understood. > It would be interesting if this library could evolve into something more > broadly used by the GTK/GNOME community. Yes, as a fan of GNOME environment, I also thikn that would be nice. Thanks Ari for comments. For now, I'll only monitor the project. Greetings -- Mateusz Loskot http://mateusz.loskot.net From ari.jolma at tkk.fi Tue May 6 12:19:28 2008 From: ari.jolma at tkk.fi (Ari Jolma) Date: Tue, 06 May 2008 13:19:28 +0300 Subject: [Freegis-list] Geovisualization / mapping library In-Reply-To: <4820139C.6010200@loskot.net> References: <481C1FCE.1000206@tkk.fi> <481C870E.4030500@loskot.net> <481C8EE8.3080406@tkk.fi> <4820139C.6010200@loskot.net> Message-ID: <482030B0.4040805@tkk.fi> Mateusz Loskot kirjoitti: > >> It would be interesting if this library could evolve into something >> more broadly used by the GTK/GNOME community. > > Yes, as a fan of GNOME environment, I also think that would be nice. > At some point I'll post about this on a relevant list (cairo, gtk, gnome,?). That's when I'm more sure about the interface, it's already developed much from what it was a week ago. Now it's much more like cairo and gtk, with pointers to opaque structs to hide the internals from the API and other OO in C type of things. I wonder what will be the reaction to the dependance on GDAL. I'm thinking it might be possible to treat it as one alternative data provider. Also, it might be possible, in a similar fashion, to treat cairo as one alternative graphics backend, however, that might make less sense. Ari -- Prof. Ari Jolma Geoinformatiikka / Geoinformatics Teknillinen Korkeakoulu / Helsinki University of Technology tel: +358 9 451 3886 address: POBox 1200, 02015 TKK, Finland Email: ari.jolma at tkk.fi URL: http://www.tkk.fi/~jolma From mateusz at loskot.net Tue May 6 16:28:23 2008 From: mateusz at loskot.net (Mateusz Loskot) Date: Tue, 06 May 2008 16:28:23 +0200 Subject: [Freegis-list] Geovisualization / mapping library In-Reply-To: <482030B0.4040805@tkk.fi> References: <481C1FCE.1000206@tkk.fi> <481C870E.4030500@loskot.net> <481C8EE8.3080406@tkk.fi> <4820139C.6010200@loskot.net> <482030B0.4040805@tkk.fi> Message-ID: <48206B07.4000006@loskot.net> Ari Jolma wrote: > I wonder what will be the reaction to the dependance on GDAL. I'm > thinking it might be possible to treat it as one alternative data > provider. Also, it might be possible, in a similar fashion, to treat > cairo as one alternative graphics backend, however, that might make less > sense. Personally, I'd not think too much about supporting too many "optionals": - renderer: libgd or cairo or agg or ... - provider: GDAL or FDO or Yet Another Cool Interface to Geospatial ... I believe that in most cases it would be sufficient to provide complete support to GDAL/OGR. Big variety of options may be distracting too much :-) Just my 5 eurocents Greetings -- Mateusz Loskot http://mateusz.loskot.net From ari.jolma at tkk.fi Tue May 6 17:15:41 2008 From: ari.jolma at tkk.fi (Ari Jolma) Date: Tue, 06 May 2008 18:15:41 +0300 Subject: [Freegis-list] Geovisualization / mapping library In-Reply-To: <48206B07.4000006@loskot.net> References: <481C1FCE.1000206@tkk.fi> <481C870E.4030500@loskot.net> <481C8EE8.3080406@tkk.fi> <4820139C.6010200@loskot.net> <482030B0.4040805@tkk.fi> <48206B07.4000006@loskot.net> Message-ID: <4820761D.3010106@tkk.fi> Mateusz Loskot kirjoitti: > - provider: GDAL or FDO or Yet Another Cool Interface to Geospatial ... > > I believe that in most cases it would be sufficient to provide > complete support to GDAL/OGR. Big variety of options may be distracting > too much :-) I'd like to support besides GDAL at least as simple as possible in-memory rasters and perhaps in-memory vector data. Ari -- Prof. Ari Jolma Geoinformatiikka / Geoinformatics Teknillinen Korkeakoulu / Helsinki University of Technology tel: +358 9 451 3886 address: POBox 1200, 02015 TKK, Finland Email: ari.jolma at tkk.fi URL: http://www.tkk.fi/~jolma From mateusz at loskot.net Tue May 6 21:32:17 2008 From: mateusz at loskot.net (Mateusz Loskot) Date: Tue, 06 May 2008 21:32:17 +0200 Subject: [Freegis-list] Geovisualization / mapping library In-Reply-To: <4820761D.3010106@tkk.fi> References: <481C1FCE.1000206@tkk.fi> <481C870E.4030500@loskot.net> <481C8EE8.3080406@tkk.fi> <4820139C.6010200@loskot.net> <482030B0.4040805@tkk.fi> <48206B07.4000006@loskot.net> <4820761D.3010106@tkk.fi> Message-ID: <4820B241.7070609@loskot.net> Ari Jolma wrote: > Mateusz Loskot kirjoitti: >> - provider: GDAL or FDO or Yet Another Cool Interface to Geospatial ... >> >> I believe that in most cases it would be sufficient to provide >> complete support to GDAL/OGR. Big variety of options may be distracting >> too much :-) > > I'd like to support besides GDAL at least as simple as possible > in-memory rasters and perhaps in-memory vector data. Good idea. -- Mateusz Loskot http://mateusz.loskot.net From GavinF at mintek.co.za Fri May 9 16:26:08 2008 From: GavinF at mintek.co.za (Gavin Fleming) Date: Fri, 9 May 2008 16:26:08 +0200 Subject: [Freegis-list] FOSS4G 2008 CFP reminder and workshop news Message-ID: FOSS4G 2008 CFP reminder and workshop news Free and Open Source Geospatial 2008, Cape Town, South Africa. September 29 - Oct 3 2008. incorporating GISSA 2008. Reminder: The paper / presentation submission deadline is this coming Monday 12 May. Go to http://www.foss4g2008.org and click on 'Call for Papers'. Early-bird registration closes on 15th June, so register soon! FOSS4G is renowned for its hands-on WORKSHOPS and LABS. 2008 is no exception. The Workshop/labs track has been going well in terms of submissions. We have (as of 9th May 2008) 26 interesting and relevant submissions to choose from, ranging across a wide spectrum of GIS topics. Desktop GIS (with spatial analysis and geovisualization to the fore) is a common theme and there is a strong representation from the broad Internet GIS field (web map servers, rich internet applications/web clients, OGC web services). Themes also making an appearance are geoportals, metadata, spatial ETL and the use of spatial databases. There is also some focus on programming/scripting. The emphasis is heavily on showing what is possible with FOSS4G through practical "how-to's", getting software/services up and running quickly and trying them out. Many of the workshops emphasise the excellent Java-based tools and frameworks. 90 minute Labs are included in the core conference package. Register for the full 5 day package and get to attend up to three 4 hour workshops free! Submit your abstract soon. Come and have a bash in Cape Town. Gavin Fleming FOSS4G 2008 Conference Chair www.foss4g2008.org PS: Please distribute this notice widely, blog about FOSS4G 2008, add a banner to your website. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.intevation.de/pipermail/freegis-list/attachments/20080509/e75cc767/attachment.html From GavinF at mintek.co.za Thu May 15 08:49:35 2008 From: GavinF at mintek.co.za (Gavin Fleming) Date: Thu, 15 May 2008 08:49:35 +0200 Subject: [Freegis-list] FOSS4G 2008 Call for paper and workshops extended! Message-ID: Free and Open Source Geospatial 2008, Cape Town, South Africa. September 29 - Oct 3 2008, incorporating GISSA 2008. SUBMISSION DEADLINE EXTENSION! 23 May Due to demand, the Where 2.0 conference starting on our previous deadline and a website glitch with the original cut-off date, we are pleased to announce the EXTENSION of the deadline for Paper, Presentation and Poster abstracts AND the deadline for Workshop proposals to the *** 23 MAY ***. Go to http://www.foss4g2008.org and click on 'Call for Papers'. You can also view the Call for Papers at: http://wiki.osgeo.org/wiki/FOSS4G2008_Call_for_papers and the Call for Workshop proposals at: http://wiki.osgeo.org/wiki/FOSS4G2008_Call_for_workshops Thanks to those of you who have submitted so far. As of 14 May we already have an exciting selection of Workshops and Labs (32), Academic Papers (50), Presentations (85) and Posters (10). The previous Announcement gave you a taste of the Workshops. As far as papers and presentations go, a small sampling gives us 'An Integrated Water Resource Decision Support System built from OSS tools', 'Characterisation of tsunami affected areas using remote sensing and GIS', 'Modus Operandi of a FOSS GIS project in India', 'Challenges in GIS education and training', 'Using Python and wxWidgets to build custom GIS applications', 'Using KML and Google Earth to interact with SA water resource data', 'Easing Transition to Open Source Geo-Spatial Data Manipulation in GML', 'A Free GIS Book', 'Open-source based market information systems - one option for Developing Nations',' A year of full-speed FOSS- winning the hearts, minds, and business case', 'Senegalese land register modernization through OpenSource software', 'BeeGis: digital field mapping that just works',' The use of FOSS GIS in Integrated GIS in Local Government in South Africa',' GIS in the Geography Curriculum: Teacher Training'.' Topology support in FOSS4G solutions', 'TerraLib as an Open Source Platform for Public Health Applications',' Google Earth Powered by MapGuide Open Source',' GDAL/OGR Project Status Report' and this list goes on. Remember: Early-bird registration now closes on 20th June and hotel specials will be released soon after, so register soon! Submit your abstract or proposal soon. Come and have a bash in Cape Town. Gavin Fleming FOSS4G 2008 Conference Chair www.foss4g2008.org PS: Please distribute this notice widely, blog about FOSS4G 2008, add a banner to your website, add FOSS4G2008 to your website calendar... -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.intevation.de/pipermail/freegis-list/attachments/20080515/f9f53841/attachment.html From silliz at adinet.com.uy Wed May 21 02:23:12 2008 From: silliz at adinet.com.uy (Silvina Lizardi) Date: Tue, 20 May 2008 21:23:12 -0300 (UYT) Subject: [Freegis-list] ECW Source SDK Available - Linux Message-ID: <14534458.1211329392822.JavaMail.tomcat@fe-ps03> hola necesito poder leer en linux im?genes en formato ecw, cuando quise descargar el ecwsdk, el link est? da?ado, podr?an darme otra direccion donde descargarlo? muchas gracias From mays at lat-lon.de Fri May 23 20:34:06 2008 From: mays at lat-lon.de (Judit Mays) Date: Fri, 23 May 2008 20:34:06 +0200 Subject: [Freegis-list] deegree day 2008 - programme is on-line Message-ID: <48370E1E.2020604@lat-lon.de> Dear friends of deegree! we would like to inform you, that the final programme for deegree day 2008 has been published. Please visit http://deegreeday.deegree.org and check out the conference programme for June 17th, as well as the workshop programme for the following day. Although participation at deegree day is free of charge, it is appreciated if you could register in advance. The on-line registration for the conference is quick and easy: just fill out the form at http://deegreeday.deegree.org/deegreeday2008/registration A separate registration is necessary for the workshop programme on June 18th. You will find all necessary information at http://deegreeday.deegree.org/deegreeday2008/workshops We are looking forward to welcome you in Bonn on June 17th 2008. All the best! Judit Mays for the Organizing Team -- l a t / l o n GmbH Aennchenstrasse 19 53177 Bonn, Germany phone ++49 +228 18496-0 fax ++49 +228 18496-29 http://www.lat-lon.de http://www.deegree.org ------------------------------------------------------- On June 17 is deegree day - Am 17. Juni ist deegree day http://deegree.org/deegreeday From bartvde at osgis.nl Wed May 28 19:07:52 2008 From: bartvde at osgis.nl (Bart van den Eijnden (OSGIS)) Date: Wed, 28 May 2008 19:07:52 +0200 Subject: [Freegis-list] open source GIS event in The Netherlands on June 17 Message-ID: <483D9168.5070305@osgis.nl> Hi list, 17 june the Technical University of Delft (The Netherlands) is hosting a day about open source GIS software, with workshops on PostGIS and OpenLayers. For more information see: http://www.osgeo.nl/ Best regards, Bart -- Bart van den Eijnden OSGIS, Open Source GIS bartvde at osgis.nl http://www.osgis.nl