What data do we use for Toporama?
Toporama uses five main data sets to offer maps that start at a national level and then move to regional and local views. Each offers increasing levels of detail. For the most part, only one main data set is used for each zoom level. However, to improve map clarity, there are situations when features from different data sets appear together as shown in the table that follows. The five main data sets that appear in Toporama are: • The Atlas of Canadas 1:30 000 000 National Scale Framework • The Atlas of Canadas 1:7 500 000 National Scale Framework • The Atlas of Canadas 1:1 000 000 National Scale Framework • Centre for Topographic Information’s 1:250 000 National Topographic Data Base • Centre for Topographic Information’s 1:50 000 National Topographic Data Base In addition, the following data is used with the five main data sets above: • Centre for Topographic Information’s GeoBase National Road Network • Centre for Topographic Information’s Canadian Digital Elevation Data • Centre for
