Re: [Talk-ca] Toronto aerial imagery

2009-11-09 Thread Dan Putler
NAD27 is North American Datum of 1927 (Geobase data actually uses the North American Datum of 1983, on NAD83). Assuming the vector data is available in shapefile format as well, run the shapefiles through ogr2ogr in the GDAL/OGR library, and specify you want to convert to WGS84 geographic. Dan

Re: [Talk-ca] Toronto aerial imagery

2009-11-09 Thread Austin Henry
- Andrew MacKinnon arranged a host of electrons thusly: - The recently released City of Toronto aerial imagery is on the following WMS server: [snip] Trouble is, it uses a projection called NAD27 (found that with a bit of googling) and it shows up a few metres off in JOSM. Any way to fix

Re: [Talk-ca] Toronto aerial imagery

2009-11-09 Thread Richard Weait
I had a look at the Toronto address point data yesterday. This shape file is NAD27 as well. When converted with shp-to-osm the location was off by about 100m when compared to OSM road data. When converted to EPSG:4326 with ogr2ogr, then run through shp-to-osm, the data is closer, but still

Re: [Talk-ca] Dealing with huge features

2009-11-09 Thread Sam Vekemans
One thing i forgot to mention, I'll use my trusty example on Vancouver Island http://www.openstreetmap.org/?lat=48.599lon=-124.63zoom=10layers=B000FTFT Because the script 'chops up' that wooded area shp file into 'bite-sized chunks 2000) once all the 'chunks get uploaded'' it turns out