National map of Switzerland
The National Map of Switzerland is the official topographic map series of Switzerland and is produced and published by the Federal Office of Topography .
Structure of the map material
The maps are based on a oblique, conformal cylinder projection ( Mercator projection ) with its own Swiss coordinate system ( CH1903 + ). All map sheets with the exception of the continuously updated digital 1: 10,000 map are completely updated in a cycle of approx. Six years.
In 1938 new cards were issued to replace the old Dufour and Siegfried cards . They initially appeared on a scale of 1: 50,000; from 1952 on a scale of 1: 25,000 and from 2016 digitally on a scale of 1: 10,000. In addition, further generalizations were made on a smaller scale. The whole of Switzerland was covered with each scale. In 1979 the work was completed with the issue of the last 25,000 card, before the work was supplemented by the 10,000 card in 2016.
The topographic maps are issued in the following scale series:
| Surname | Scale | Envelope color | Number of sheets | Tracking status |
|---|---|---|---|---|
| National map | 1: 10,000 | - | (digital) | yearly |
| National map | 1: 25,000 | brown | 247 | |
| National map | 1: 50,000 | dark green | 78 | |
| National map | 1: 100,000 | bright red | 23 | |
| National map | 1: 200,000 | orange | 4th | 2009 |
| General map | 1: 300,000 | blue | 1 | 2008 |
| National map | 1: 500,000 | dark red | 1 | 2008 |
| National map | 1: 1,000,000 | light green | 1 | 1994 |
The normal map sheets are arranged in a grid. In addition, there are compositions across leaf boundaries around agglomerations or in tourist areas. Many of the map sheets on a scale of 1: 50,000 are also available as hiking maps (with highlighted hiking trails) or ski tour maps .
The Federal Office of Topography also issued the following digital products: 1: 25,000 on DVD (Swiss Map 25), National map 1: 50,000 on DVD (Swiss Map 50), National map 1: 100,000 on CD-ROM (Swiss Map 100). For professional applications there are digital landscape models as pixel maps for all scales, digital landscape models as vector data based on the national maps 1: 10,000 (Swiss Map Vector 10), 1: 25,000 (VECTOR25) and 1: 200,000 (VECTOR200) , digital elevation models with mesh sizes 25 m (DHM25) and 2 m (DOM / DTM-AV).
For the Swiss maps , the Repère Pierre du Niton in the port of Geneva is the starting point for altitude measurements.
National map of Switzerland online
The Federal Geographic Information Act, which has been in force since June 2008, requires that all geographic information data must be made available to the population, unless privacy or higher national interests oppose this. Since August 19, 2010 (silent go live January 1, 2010) all of the map material has been available on the Internet free of charge. As the operating costs are low thanks to open source software, the offer is free of charge.
This map material is built up in different layers. First the overview map appears on a scale of 1: 1,000,000. By zooming in, the map scale is continuously increased up to 1: 10,000. Different levels can be displayed. These include B. historical maps and aerial photos, hiking trails, the locations of cell phone antennas, various hazard maps and the postal addresses and house numbers of all buildings. Already today, all around 300,000 names (place names, field names, etc.) that are shown on the map can be called up using a search mask.
The cards can be printed up to A3 format.
New design from 2014
The representation of the maps 1: 25,000 was updated from 2014 starting with the map sheet Olten. The national map font specially designed in 1952 has been replaced by the Frutiger , the 1: 10,000 map followed in 2016 in the same style.
See also
Web links
Individual evidence
- ↑ a b Federal Office of Topography: National Map 1:10 000 , accessed on September 27, 2016
- ↑ http://map.geo.admin.ch/ Landeskarte online
- ↑ The new Swiss map world begins in Olten