Vectorization Technique for GIS Grid Data Based on "Grid Technique”

This paper first introduces the vectorization technique of grid data in GIS，then proposes a new vectorization method based on “grid technique” for GIS application．The realization process and algorithm of vectorization for multi-layer grid data is provided which relies on the single-layer grid data vectorization and registration．In the end，we draw a conclusion along with the concrete application in our own soil erosion GIS．