Tile-based vector map rendering method

The invention discloses a tile-based vector map rendering method. The method comprises the following steps of 1, checking whether required tiles exist in a cache or not according to the map tiles required for current view calculation, and if not, rendering the tiles according to vector data, recording tile data time as timestamps of the vector data, forming the tiles, putting the tiles into the cache, and drawing the tiles on a map; and 2, if the required tiles exit in the cache and tile data timestamps in the cache are consistent with the timestamps of the vector data corresponding to the tiles, drawing the tiles on the map, and if the tile data timestamps in the cache are inconsistent with the timestamps of the vector data corresponding to the tiles, rendering the tiles according to thevector data, updating the tile data timestamps to the timestamps of the vector data, forming the tiles, putting the tiles into the cache, and drawing the tiles on the map. According to the method, themap tiles can be rendered