Geographic information processing method for conversion from vector data to raster data of wind power plant

The invention provides a geographic information processing method for converting vector data into raster data of a wind power plant. The geographic information processing method solves the problems that the calculation amount is large and the precision is insufficient when unstructured vector data is converted into structured raster data. According to the technical scheme, Map vector data are segmented and managed by using a quadtree with higher resolution, then vector line segments are traversed and terrain height is weighted by respectively adopting a horizontal ray method and a vertical ray method, and then the accuracy of a terrain raster data calculation result is improved through smoothing processing. And finally, generating a terrain grid file. According to the method, the inner side and the outer side of the irregular shape vector data can be quickly identified, the grid attributes among the line segments are accurately filled, the calculation amount of traversing the vector data ...