THE DIGITAL MAPPING PROCESS OF THE BASIC MAP OF FINLAND 1:10 000 / 1:20 000

摘要

The production of the Basic Map of Finland begun in 1947 and was completed in 1977. After that the revision was the main activity. Already in 1972 a digital testwork was started. After that more and more digital workphases were introduced into the production. We can summarize that in last 20 years in the National Board of Survey, Finland there has been a fortgoing development towards a fully digital map production. When the cheap digital conversions of analog to analytical stereoplotters were taken in production in 1991, started the second phase of the digital production by capturing digital map data with these plotters. Today the final digital output is a plotter output. A digital map publishing system will be implemented in late 1992 or beginning 1993. The whole country (3730 map sheet) will be covered by digital map in 2005. In developing the production of a digital Basic Map we have discovered that the digital data for producing only the printed map is not enough. We must take into account the use in many GIS-applications. Therefore the goal of development is now a Digital Terrain Data Base.