The Common Version Electronic Map(CVEM) establishment project is a sub-project of the “NGIS Spatial Data Infrastructure Plan for 10 years ”.
Covering the whole Taiwan, Penghu, Jinmen, and Mazu, the CVEM has been constructed by the National Land Surveying and Mapping Center (NLSC) within 5 years (2007-2011). The specification of the contents and methods for CVEM construction, and the data circulation mechanism are available in detail. Please access to the website: https://www.nlsc.gov.tw/Home/MakePage/841?level=841 for reference.