I’ve been writting a lot recently about STAC, COG and Python. These are some of my recent posts: COG and Landsat in QGIS COG and Landsat with Python STAC, COG, Python and QGIS Smiley Face, STAC and COG I am very much aware that the majority of work with Earth Observation data is still within… Read More »Building virtual rasters from STAC
This is a light hearted post which hopefully you find fun. Let’s take a png of a (hand drawn!) smiley face and hide it in Satellite images that I have streamed as a Cloud Optimized Geotiff and found via a SpatioTemporal Asset Catalog (STAC). We are going to be using this 2kb png and hiding… Read More »Smiley Face, STAC and Cloud Optimised Geotiffs
I’ve spent a lot of time in the past trying to find satellite data. What the SpatioTemporal Asset Catalog (STAC) does is to build a common specification for how Satellite images (read Assets, they can include other things like drone imagery) are queried and found online. Why should we care about this? Well, for a… Read More »STAC, COG, Python and QGIS
Last time I wrote about how Cloud Optimized Geotiffs (COGs) are a great way to save you from having to download data and that they can be be easily streamed into QGIS (3.4 and later). If you would like to read that post it is available here. This time though I want to look in… Read More »Using Cloud Optimized Geotiff part 2 – Python
The Cloud Optimized Geotiff (COG). Is it helping you to stop unnecessarily downloading data? It should. One of the biggest Earth Observation ‘things’ in 2019 was that USGS is delivering Landsat 8 as COGs (that have a SpatioTemoral Asset Catalog – STAC as well) But old practices die hard and sometimes, despite the knowledge of… Read More »Using Cloud Optimized Geotiff part 1