Abstract:

Based on the analysis of MapGIS software system and spatial multivariate geoscience information prospecting of eastern Junggar，contrary to vector correction of non-vectorized random parameter geological map data，we present basemap vector correction method of the key points matching method.Furthermore，against vector correction of non-registration vector map，we propose two kinds of solutions，that is key points coordinate method and key points distance method.The results show that key points matching method can effectively solve the problems of large cumulative error and low efficiency caused by traditional single basemap method.For vector correction of non-registration ordinary digital maps，we use key points coordinate method and key points distance method to achieve this process，and the former is the best way to solve vector non-registration correction diagram，it is applied to the original basemap with four or more key points，the maps primitive information is accurate after correction，it does not adjustment point and line primitive parameter in late stage，with small error and high efficiency.When there is little key points in non-registration vector figure，we can use key points distance method to conduct correction instead of key points coordinate method.The three methods have an important significance to improve the utilization levels of outcome data，promote the validity and accuracy of spatial multivariate geoscience information prospecting.

Key words: MapGIS, random parameters, geological maps, vector correction