DLG is among 4D cartography of digital maps for General plan of land utilization, DLG of Production and Quality Control is foundation of topographic database. This pape summarizes the standard work flow of DLG for MAPGIS, and introduces quality control methods and strategies for DLG of production by taking 1:50000 General plan of land utilization on plan area of Mianyang for example. It expounds the sources of the errors in digital maps and correction principles of these errors, introduces the usage of the correction software of MapGIS, and evaluates the production quality of DLG.
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