File:population-earth1.png: Difference between revisions

Revision as of 15:47, 26 August 2022

Summary

An isochromic map of the world population, superimposed on a pastel-color background that shows land, water, and borders.

Everything in black is population.

Note: Some border lines may be completely obscured by populations (especially India's borders with Bangladesh, Pakistan, and Bhutan). Still better than the opposite (letting the border lines obscure the populations).

Methodology

Image generator code:

# load files
pop << data/population.data-float64-8640x4320
earth << data/blue-marble-posterized.png
borders << data/borders-black-on-white.png
borders @@ negative

# resize things to fit the 'earth' background
pop :: _earth.r # the '_' preserves the total population
borders :: earth.r
borders *= 6 # brighten the lines

# lighten the background
earth.r += 0.6
earth.g += 0.6
earth.b += 0.6

# show the borders in white
earth.r >= borders
earth.g >= borders
earth.b >= borders

# show the population in black
pop /= 800000 # max people per pixel
pop @@ spread
pop @@ negative
earth.r <= pop
earth.g <= pop
earth.b <= pop

# save
earth >> data/population-earth1.png

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Thumbnail	Dimensions	User	Comment
current	03:52, 7 August 2022		1,600 × 800 (371 KB)	Elie (talk \| contribs)	An Term:isochromic map of the world population, superimposed on a pastel-color background that shows land, water, and borders. Everything in black is population. Note: Some border lines may be completely obscured by populations (especially India's borders with Bangladesh, Pakistan, and Bhutan). Still better than the opposite (letting the border lines obscure the populations).

You cannot overwrite this file.

File usage

The following 2 pages use this file:

File:Population-earth1.png (file redirect)
Archive:000/Wind power/Geography