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April 29, 2022 15:50
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GEE driver example in R
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| library(gdalio) | |
| library(terra) | |
| library(viridisLite) | |
| source(system.file("raster_format/raster_format.codeR", package = "gdalio", mustWork = TRUE)) | |
| Sys.setenv(GOOGLE_APPLICATION_CREDENTIALS = "MYKEY.json") | |
| gee_src <- "EEDAI:CGIAR/SRTM90_V4" | |
| src_info <- vapour::vapour_raster_info(gee_src) | |
| gdalio_set_default_grid(extent=src_info$extent, | |
| dimension = c(180, 90)*10, | |
| projections = src_info$projstring) | |
| r <- gdalio_terra(gee_src, bands=1) | |
| plot(r, range=c(0,4000), col=rocket(256)) |
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| library(raytrix) | |
| library(rayshader) | |
| Sys.setenv(GOOGLE_APPLICATION_CREDENTIALS = "MYKEY.json") | |
| set_canvas_centroid(45.832, 6.865, radius = 50e3) | |
| gee_src <- "EEDAI:CGIAR/SRTM90_V4" | |
| srtm <- topo_matrix(30, src=gee_src) | |
| tex <- srtm %>% | |
| sphere_shade(texture='imhof2', zscale=30) %>% | |
| add_shadow(ray_shade(srtm, zscale = 30, sunaltitude = 25), max_darken = 0.1) | |
| plot_3d(tex, srtm, zscale=30, | |
| theta=-30, phi=15, zoom=0.2) | |
| render_depth(filename = 'test_shade.png', focallength=10) |
Author
h-a-graham
commented
Apr 29, 2022
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