[OSGeo-Discuss] Displaying vector files
Hi all, I am writing an application to load vector maps/shape files using gdal/ogr and display them onto a gui designed using Qt. I am new to dealing with vector files, I am not able to decide how to render them on GUI. Few approaches that come to my mind are: - To convert vector files to raster and display them as raster.. - To draw each shape in vector file one by one (i dont know how to do this, I dont even know whether it would be even possible this using GDAL/OGR, or how complex this would be because in my case vector files can be very complex) The decision how to render vector files is very important for me, because after displaying vector files i need to support some advanced features like projection change, interactive selection, Geo-referencing etc. Can any one who has worked on vector/gis stuff, tell me how this is usually done and what Qt widget is used for displaying such data. Thanks, Akshay gupta ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Displaying vector files
Hi Akshay, There is QGIS[1] which does both raster and vector rendering and a lot of things more that you need. You can develop a small application using QGIS as library. You need to link your application with qgis_core and qgis_gui. There are some nice tutorials written by tim sutton[2]. and QGIS uses Qt and cross platform [1] qgis.org [2] http://blog.qgis.org/taxonomy/term/1 On Wed, May 9, 2012 at 7:00 PM, akshay gupta akshaygupta...@gmail.comwrote: Hi all, I am writing an application to load vector maps/shape files using gdal/ogr and display them onto a gui designed using Qt. I am new to dealing with vector files, I am not able to decide how to render them on GUI. Few approaches that come to my mind are: - To convert vector files to raster and display them as raster.. - To draw each shape in vector file one by one (i dont know how to do this, I dont even know whether it would be even possible this using GDAL/OGR, or how complex this would be because in my case vector files can be very complex) The decision how to render vector files is very important for me, because after displaying vector files i need to support some advanced features like projection change, interactive selection, Geo-referencing etc. Can any one who has worked on vector/gis stuff, tell me how this is usually done and what Qt widget is used for displaying such data. Thanks, Akshay gupta ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- Regards, Rashad ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Open Source GIS Conference (OSGIS 2012) - Abstract deadline on 10 May 2012
Please note that abstract submission deadline for OSGIS 2012 is on 10th May 2012 (Thursday). FOURTH OPEN SOURCE GIS CONFERENCE - OSGIS 2012 4th - 5th Sep 2012 Nottingham Geospatial Institute, University of Nottingham OSGIS 2012 http://www.nottingham.ac.uk/osgis/ -- The Nottingham Geospatial Institute (University of Nottingham), Open Source Geospatial Foundation (UK chapter) , ICA Commission on Open Source Geospatial Technologies and the Association of Geographic Information Laboratories for Europe (AGILE) are organising the Fourth Open Source GIS Conference in the UK on 4th - 5th Sep 2012 at the University of Nottingham. The key aims of OSGIS are: o hear presentations from government, academic, industry and policy makers on open source, open standards and open data geospatial technologies o To provide platform to network and develop ideas for future collaborative work in open source GIS o To understand current developments in open source GIS o to act as a focus for open source, open standards, open data GIS research The conference has very much international focus and holistic outlook bringing together speakers and delegates from government, academic, industry, software developers, open source communities, geospatial researchers etc. High profile speakers from all over the world will be giving presentations and hands on workshops for the conference. Contributions are invited but are not limited to the following topic areas: * State of the Art developments in Open Source GIS * Open Source GIS in Education * Interoperability and standards - OGC, ISO/TC 211 * Open Source GIS application use cases * Web processing services * Open architectures, open content, open data * Case studies of open source implementations * Open Source GIS Internationalisation and Localisation * Using Open Source GIS with proprietary software * Transition to Open Source GIS * Open Source GIS business models * Open Source GIS implementation and deployment case studies * Sensor Web enablement * Hands-on workshops on using and developing open source GIS tools Abstracts (max 1500 words) are be submitted before 10 May 2012. The conference registration will be activated on May 2012. In order to reserve your place, please register online at http://www.nottingham.ac.uk/osgis/ IMPORTANT DATES: 10 May 2012 - Abstract submission deadline 10 May 2012 - Workshops submission deadline 30 May 2012 - Authors notified 15 May 2012 - Registration opens 4-5 Sep 2012 - OSGIS 2012 We look forward to welcoming you to the University of Nottingham for an interesting conference and building future research collaborations in this exciting and rapidly developing research theme. Best wishes, Suchith Anand (on behalf of OSGIS 2012 Program Committee) Dr Suchith Anand Nottingham Geospatial Institute Nottingham Geospatial Building University of Nottingham NG7 2 TU Tel: (0)115 82 32750 http://www.nottingham.ac.uk/~lgzwww/contacts/staffPages/SuchithAnand/Suchith%20Anand.htm http://www.nottingham.ac.uk/cgs/research/researchareas/opensourcegeospatialresearch.aspx http://elogeo.nottingham.ac.uk/ http://ica-opensource.scg.ulaval.ca/ Leading Open Geospatial Science through ICA Commission on Open Source Geospatial Technologies Mission - Building up Open Source, Open Standards, Open Data research for bridging the digital divide This message and any attachment are intended solely for the addressee and may contain confidential information. If you have received this message in error, please send it back to me, and immediately delete it. Please do not use, copy or disclose the information contained in this message or in any attachment. Any views or opinions expressed by the author of this email do not necessarily reflect the views of the University of Nottingham. This message has been checked for viruses but the contents of an attachment may still contain software viruses which could damage your computer system: you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation.___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Future perspectives for OSGeo
Thanks for your thoughts and work. As everybody knows, the free GIS community is unfortunately split, more or less deeply, in two tribes (C/C++ and Java). I advocate the OSGeo foundation a model of how to get different tribes to collaborate. Admittedly we have a couple key advantages. A shared passion for seeing the world and communicating the wonders around us; open source as an enabler, and a few standards to lean on to keep to conversation pointed in the right direction. Jody___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Displaying vector files
Thanks Rashad for those links, ill have a look. Akshay On Wed, May 9, 2012 at 7:08 PM, Mohammed Rashad mohammedrasha...@gmail.comwrote: Hi Akshay, There is QGIS[1] which does both raster and vector rendering and a lot of things more that you need. You can develop a small application using QGIS as library. You need to link your application with qgis_core and qgis_gui. There are some nice tutorials written by tim sutton[2]. and QGIS uses Qt and cross platform [1] qgis.org [2] http://blog.qgis.org/taxonomy/term/1 On Wed, May 9, 2012 at 7:00 PM, akshay gupta akshaygupta...@gmail.comwrote: Hi all, I am writing an application to load vector maps/shape files using gdal/ogr and display them onto a gui designed using Qt. I am new to dealing with vector files, I am not able to decide how to render them on GUI. Few approaches that come to my mind are: - To convert vector files to raster and display them as raster.. - To draw each shape in vector file one by one (i dont know how to do this, I dont even know whether it would be even possible this using GDAL/OGR, or how complex this would be because in my case vector files can be very complex) The decision how to render vector files is very important for me, because after displaying vector files i need to support some advanced features like projection change, interactive selection, Geo-referencing etc. Can any one who has worked on vector/gis stuff, tell me how this is usually done and what Qt widget is used for displaying such data. Thanks, Akshay gupta ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- Regards, Rashad ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] CHARTER MEMBERS: please read
In advance of OSGeo's 2012 election season, we are updated our database of charter members. We need at least an email address for each of the charter members, although we will optionally be happy to accept the following data from you as well: Last Name (surname) First and middle names Nationality Affiliation Street Address City State/Province Country Post Code Phone Please send this information to me (m...@flaxen.com). This information is kept confidential, restricted to the board members. (Aggregated information without personal identifiers, such as nationalities, may be used for tracking our demographics.) The current list of 125 charter members is posted here: http://www.osgeo.org/charter_members. Thank you. _mpg, OSGeo board secretary ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] CHARTER MEMBERS: please read
On Wed, May 9, 2012 at 3:23 PM, Michael P. Gerlek m...@flaxen.com wrote: In advance of OSGeo's 2012 election season, we are updated our database of charter members. We need at least an email address for each of the charter members, although we will optionally be happy to accept the following data from you as well: Last Name (surname) Roldán First and middle names Gabriel Raúl Nationality Argentina and Spanish Affiliation OpenGeo Street Address Zeballos 1379 City Rosario State/Province Santa Fe Country Argentina Post Code 2000 Phone +54 0341 153 798 287 Cheers, Gabriel Please send this information to me (m...@flaxen.com). This information is kept confidential, restricted to the board members. (Aggregated information without personal identifiers, such as nationalities, may be used for tracking our demographics.) The current list of 125 charter members is posted here: http://www.osgeo.org/charter_members. Thank you. _mpg, OSGeo board secretary ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss -- Gabriel Roldan OpenGeo - http://opengeo.org Expert service straight from the developers. ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
