File:land-usage2.png
Size of this preview: 800 × 400 pixels. Other resolutions: 2,560 × 1,280 pixels | 4,320 × 2,160 pixels.
Original file (4,320 × 2,160 pixels, file size: 3.08 MB, MIME type: image/png)
Summary
The 3 main land uses - crop land, pasture land, built-up land - shown in 3 overlapping colors.
- Yellowish-orange is crop land.
- Cyanish-blue is pasture land.
- Magenta is built-up land (housing & cities) (which may be hard to see outside of India & China).
These colors act like inks, which when overlap, create mixed colors.
Image generator code:
pop << data/population.data-float64-8640x4320 # population counts crop << data/cropland.data-float32-4320x2160 # cropland fraction of land past << data/pasture.data-float32-4320x2160 # pasture fraction of land earth<< data/continents-black-on-white.png # base layer 8640x4320 # convert the data and shrink down to 4320x2160 pop @@ quantity_to_density # convert to 'people per km^2' pop /= 2500 # threshold for land to be considered 'fully built-up' pop @@ width/2 pop @@ height/2 crop >= 0 past >= 0 earth *= -0.07 earth += 1 earth @@ width/2 earth @@ height/2 # make image out.r := earth out.r -= past out.r @@ 01 out.b := earth out.b -= crop out.b @@ 01 past *= 0.25 crop *= 0.25 out.g := earth out.g -= past out.g -= crop out.g -= pop out.g @@ 01 out >> data/land-usage2.png
See also: File:land-usage1.png
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 03:50, 1 September 2022 | 4,320 × 2,160 (3.08 MB) | Elie (talk | contribs) | The 3 main land uses - crop land, pasture land, built-up land - shown in 3 overlapping colors. |
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