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image_raster and friends should include 4 bands if alpha present #10

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mdsumner opened this issue Aug 1, 2021 · 0 comments

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mdsumner commented Aug 1, 2021

doh

this should return 4 layer raster

f <- system.file("extdata/sst.tif", package = "vapour", mustWork = TRUE)
r <- raster::raster(f)
pal <- palr::sst_pal(palette = TRUE)
vr <- range(raster::values(r), na.rm = TRUE)

rgb <- palr::image_raster(r, col = scales::alpha(pal$cols, 0.5), breaks = seq(vr[1], vr[2], length.out = length(pal$cols) + 1))

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