Creating very large GeoTIFFs and WMS from sparse data
Technical article on converting a large CSV file into an XYZ, then GeoTIFF, then Web Map Service (WMS).
Description
Our CTO wrote up a process for creating very large GeoTIFFs and WMS map tiles from, large, sparse data (CSV). NatureQuant often works with large GIS data, such as covering the entire US, or for example, with our NatureScore and NatureDose products, we cover all of North America, and quite soon Europe as well. We produce various bespoke data sets for our clients, and in this case we needed to create a WMS (Web Map Service) from data covering the United States (including Hawaii and Alaska). Our data started as a 6GB CSV file containing hundreds of millions of rows. The article describes how we transformed this into a GeoTIFF and then WMS.