Noli, Thanks for the info. I saw that sqlite/spatialite was supported by Mapnik but I have to admit the "WARNING: highly uber experimental !" at the top of the page put me off a bit. I will definitely try if out though; is it more stable than the docs let on?
You are right about the mapcanvas, having that would be really convenient. In wxPython it looks like I will have to build something that would allow me to display the map generated by Mapnik with basic /zoom/pan/measure/query tool functionality from scratch. Drawing the map is pretty easy I think. I can just draw the Mapnik produced bitmap right on a wx.Panel, the trick will be creating some basic tools and having them support geographic & projected coordinate systems. Thanks again for your help, I will check out the quantumnik and look for that sample using pyQT without the QGIS mapcanvas. Angus --- On Thu, 9/23/10, Noli Sicad <[email protected]> wrote: > From: Noli Sicad <[email protected]> > Subject: Re: [Mapnik-users] Mapnik for desktop applications > To: "Angus Dickey" <[email protected]> > Cc: [email protected] > Received: Thursday, September 23, 2010, 4:43 PM > Hi Angus, > > I think you can use spatialite for datasouce. > > http://trac.mapnik.org/wiki/SQLite > > http://code.google.com/p/pyspatialite/ > > I think the challenge is how to create a mapcanvas in > wxpython or pyqt > without use of qgis mapcanvas to render mapnik and various > layer. > > Have a look at quantumnik as well. > http://bitbucket.org/springmeyer/quantumnik/wiki/Home > > There is already sample program using PyQt with mapnik > without Qgis mapcanvas. > > Have look at the archive. Right now, I can find the exact > URL to download it. > http://www.mail-archive.com/search?l=mapnik-users%40lists.berlios.de&q=feverzsj+simple+map > > Noli > > > > > On 9/24/10, Angus Dickey <[email protected]> > wrote: > > Hi, > > > > I am new to Mapnik and was thinking about using Mapnik > as the mapping > > solution for a desktop GIS application. My initial > thoughts were to use: > > > > - Python > > - wxPython > > - Mapnik > > > > With other packages (OGR/GDAL, Shapely, pyproj, etc.) > if needed. > > > > I have looked at the Mapnik samples and API and I know > it can make a great > > looking map, what I am not sure about is the ability > to add a > > temporary/dynamic layer. What I would like to be able > to do is have Mapnik > > set up with static background mapping data and add > markup (or temp layers) > > to Mapnik made up of geometry (points/lines/polys) > calculated elsewhere. Is > > this possible in Mapnik? I see there are some > provisions for a "Memory > > Datasource" but it looks like it only supports > points? > > > > Anyone have any thoughts on how this might be done? I > thought about having a > > text based OGR layer (GeoJSON?) added to Mapnik and > changing this file on > > disk; doesn't really seem like a good idea though... > > > > Any info or thoughts are appreciated. > > > > Thanks, > > > > ~Angus > > > > > > > > > > > > > > _______________________________________________ > > Mapnik-users mailing list > > [email protected] > > https://lists.berlios.de/mailman/listinfo/mapnik-users > > > _______________________________________________ Mapnik-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/mapnik-users
