Thank you Pierre you for this information. I have adapted your code from the sample map to my maps and got things working. The quality of the output is excellent.
A couple of things: 1) It seems to work up to zoom = 18 which is important for my maps. The contours are a little zig-zaggy but not too bad. USGS topos only work to zoom = 17. 2) the interface was sufficiently different, particularly with the function WMSGetTileUrl(tile,zoom) so that I had to make a special case in the function WMSCreateMap(...) for this one map type, otherwise the rest of my maps would fail. With that, all my map types now work. 3) The order of the parameters for the function WMSCreateMap(...) is different from what I was using, which also came from Jef Poskanzer. I may have gotten an earlier version. It was no trouble to rearrange them appropriately. I have a working version in test. In a day or two I'll post a link after I test it a bit more. Thanks again On Sep 7, 7:35 am, PierreB <[email protected]> wrote: > Papa Bear mentionned last week that canadian topo maps (NRCAN) are of > poor quality. This is true. But a new service have been implemented in > may by NRCAN to replace it. It seems this introduction passed > unnoticed so far. I myself searched for a long time and to find > information about this new service. > > NRCAN has introduced in may the Toporama WMS service. This gives > access to the new CANTOPO, the new generation of Topographic Maps (1 / > 50 000) produced by NRCAN. Theses maps are in vector format. > > The availability of this new vector format for canadian topo maps > gives us more precision and clarity as compared to the old Raster Maps > format who where a scan of the Paper Maps. Texts describing rivers and > local points of interest do not anymore collapse when zooming to lower > levels. The map is also of higher quality at higher zoom level. And > the information shown on the maps is adapted to the zoom levels. > > This new service is described on the Geogratis site of NRCAN > :http://www.geogratis.gc.ca/geogratis/en/service/toporama.html. The > topographic data is offered in 16 different layers. It is also > possible to select simultaneously all the layers (layers=WMS- > Toporama). For the time being, the access to the new server is a lot > faster then on the older one. > > To add the Toporama MapType to the Google Map API, we use the > WMSCreateMap function from Jef Poskanzer's Acme Mapper (http:// > mapper.acme.com/). The Toporama server is accessed > athttp://wms.sst-sw.rncan.gc.ca/wms/toporama_en. The layer WMS-Toporama > is specified. > > Note also that zoom levels are restricted between 11 and 15, since > these are the only levels accessible through Toporama WMS Service. > > var NRCAN_TOPORAMA_A = WMSCreateMap('TOPO Vector Map','<a > href="http://www.geogratis.gc.ca/geogratis/en/licence.jsp";>© Department of > Natural > Resources Canada</a> - <a href="http://cartes.nrcan.gc.ca/topo101/ > symbols_e.php">Description of symbols</a>','http://wms.sst- > sw.rncan.gc.ca/wms/toporama_en', 'WMS-Toporama', 11, 15, 't' ); > > The following link gives acces to a Sample Toporama Map through Google > Map API v2 application. > > http://www.clubmontagnecanadien.qc.ca/sentier/toporama.htm > > PierreB --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Maps API" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/google-maps-api?hl=en -~----------~----~----~----~------~----~------~--~---
