In this video, I point at some of the issues that characterise data grids and that may generate misunderstandings.
In the video, I mention how gridded data can be generated via satellite imagery and machine learning techniques. Of course, such data can be generated also via other means.
References This video is based on the data used for this article: Climate warming in Europe, municipality by municipality
Municipality-level data for Italy can be accessed through this interactive interface: In marcia con il clima