Re: [Qgis-user] compare GIS
Hi Willem QGIS can do all these things as Martin has explained above. You can also see the qgis blog where I have posted various short tutorials on embedding QGIS canvas controls into your vertical application. One more thing that you should keep in mind when doing your evaluations is that QGIS is released under the GPL and uses the GPL version of Qt4 so you would be expected to to develop your software under the same license. Regards Tim On 12/29/06, Martin Dobias <[EMAIL PROTECTED]> wrote: On 12/29/06, Willem Jenniskens <[EMAIL PROTECTED]> wrote: > > Hello, > > The company I work for wants to develop certain GIS functionality on top of > an existing GIS product. I would like to do a small comparison between the > various GIS programs so that we can make a motivated decision. The > application must enable us to develop the following: Hi Willem, when developping applications with QGIS, there are basically two options: - create a plugin for QGIS - create an application based on QGIS libraries - you can start a new application and use only some functionality from QGIS - e.g. postgis data provider, map renderer or map canvas etc. Applications have to be written with C++ and Qt as QGIS is based on them. In 0.9 release you will have also possibility to use Python instead of C++. > - create functionality where a user can place symbols, lines or polygons in > the map by drawing in the map. Next, a dialogbox must appear where he can > enter some attribute information. The coordinates and the entered attribute > data must be stored in a spatial database (postgis). Yes, you can use map canvas API for this or just directly use digitizing functionality of QGIS. Postgis backend is well supported. > - One can have multiple views (windows) that are linked together; so when > you pan in one view, the other views will pan along automatically. (there > are different layers in each view) This could be done in case you would develop a new application - there you could create multiple map canvases and connect them together. > - Create short-cut keys for various functions; for example to make layers > visible / invisible and to zoom in to a certain scale. Should be easy - actions in Qt allow settings shortcuts. > - It must be fast with raster and vector data Well, this is for your own consideration whether it's fast enough. > - Make use of global variables that we can use in the entire application Why not... > - Create buttons, menu bars, etc that execute our developed scripts A piece of cake :) Check out developer's corner on QGIS wiki, you'll find some tutorials on how to develop plugins and/or custom applcations with QGIS: http://wiki.qgis.org/qgiswiki/DevelopersCorner Regards, Martin ___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user -- -- Tim Sutton Visit http://qgis.org for a great Open Source GIS Home Page: http://linfiniti.com Skype: timlinux MSN: [EMAIL PROTECTED] Yahoo: [EMAIL PROTECTED] Jabber: timlinux Irc: timlinux on #qgis at freenode.net ___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
Re: [Qgis-user] compare GIS
On 12/29/06, Willem Jenniskens <[EMAIL PROTECTED]> wrote: Hello, The company I work for wants to develop certain GIS functionality on top of an existing GIS product. I would like to do a small comparison between the various GIS programs so that we can make a motivated decision. The application must enable us to develop the following: Hi Willem, when developping applications with QGIS, there are basically two options: - create a plugin for QGIS - create an application based on QGIS libraries - you can start a new application and use only some functionality from QGIS - e.g. postgis data provider, map renderer or map canvas etc. Applications have to be written with C++ and Qt as QGIS is based on them. In 0.9 release you will have also possibility to use Python instead of C++. - create functionality where a user can place symbols, lines or polygons in the map by drawing in the map. Next, a dialogbox must appear where he can enter some attribute information. The coordinates and the entered attribute data must be stored in a spatial database (postgis). Yes, you can use map canvas API for this or just directly use digitizing functionality of QGIS. Postgis backend is well supported. - One can have multiple views (windows) that are linked together; so when you pan in one view, the other views will pan along automatically. (there are different layers in each view) This could be done in case you would develop a new application - there you could create multiple map canvases and connect them together. - Create short-cut keys for various functions; for example to make layers visible / invisible and to zoom in to a certain scale. Should be easy - actions in Qt allow settings shortcuts. - It must be fast with raster and vector data Well, this is for your own consideration whether it's fast enough. - Make use of global variables that we can use in the entire application Why not... - Create buttons, menu bars, etc that execute our developed scripts A piece of cake :) Check out developer's corner on QGIS wiki, you'll find some tutorials on how to develop plugins and/or custom applcations with QGIS: http://wiki.qgis.org/qgiswiki/DevelopersCorner Regards, Martin ___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
[Qgis-user] compare GIS
Hello, The company I work for wants to develop certain GIS functionality on top of an existing GIS product. I would like to do a small comparison between the various GIS programs so that we can make a motivated decision. The application must enable us to develop the following: - create functionality where a user can place symbols, lines or polygons in the map by drawing in the map. Next, a dialogbox must appear where he can enter some attribute information. The coordinates and the entered attribute data must be stored in a spatial database (postgis).- One can have multiple views (windows) that are linked together; so when you pan in one view, the other views will pan along automatically. (there are different layers in each view)- Create short-cut keys for various functions; for example to make layers visible / invisible and to zoom in to a certain scale.- It must be fast with raster and vector data- Make use of global variables that we can use in the entire application- Create buttons, menu bars, etc that execute our developed scripts Can we do this with QGis? Thanks, Willem _ Probeer Live.com: jouw leven online met nieuws, sport, weer en nog veel meer. http://www.live.com/getstarted___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user