戴安·费:ST_MapAlgebra与瓦片栅格
原文英文,约400词,阅读约需2分钟。发表于: 。Let's say you have two rasters, and you want to combine them with some extra value math -- perhaps you want to grade grassland around 50°N 100°E by latitude and elevation, so blue to green to red...
本文介绍了使用ST_MapAlgebra函数将两个栅格图像合并的方法,并解决了在瓦片栅格图像中的问题。通过传入外部变量,可以在表达式参数中使用format函数进行条件逻辑计算。