Cog Math Multisource

--- layout: example.html title: NDVI+NDWI from two 16-bit COGs shortdesc: Calculating NDVI+NDWI as green and blue values. docs: > The GeoTIFF layer in this example calculates the Normalized Difference Vegetation Index (NDVI) and Normalized Difference Water Index (NDWI) from two cloud-optimized Sentinel 2 GeoTIFFs: one with 10 m resolution and red and a near infrared bands, and one with 60 m resolution and a short wave infrared channel. The NDVI is shown as green, the NDWI as blue. The 4th band is the alpha band, which gets added when a source has a nodata value configured. tags: "cog, ndvi, ndwi, sentinel, geotiff" ---