Hosting option for COGs #5
Description
Hey team! I did some investigating about hosting options and it seems like PANGAEA supports HTTP range requests, which would solve a big problem.
I found a COG dataset on PANGAEA by searching for "cloud optimized geotiff". It's a permafrost dataset. The following code grabs a relatively small chunk (3deg lon, 2deg lat) and plots it. Looks like it's working!
library(terra)
project_bbox <- function(b, from, to) {
bbox_vect <- as.polygons(b, crs = from)
bbox_proj <- project(bbox_vect, to)
ext(bbox_proj)
}
r <- rast("/vsicurl/https://download.pangaea.de/dataset/964814/files/TCVIS-2003-2022_mosaic-east_cog.tif")
# Now extract just a subset - only downloads the needed tiles
bbox <- ext(15, 18, 67, 69) # small area
subset <- crop(r, project_bbox(bbox, "EPSG:4326", "EPSG:3857"))
plot(subset)