So look for free DSM data with a resolution of 1m which means in every sq meters you have an elevation point.
Get elevation data - (they are rasters available in different formats and resolutions)įor a finer and more accurate map, you'll need more resolution or in other words smaller cell (pixel) size! Digital surface models(DSM) are generally more preferable for your case than digital terrain models(DTM) or digital elevation models (DEM).The steps that you should take generally is:
