https://thechange.wiki/index.php?action=history&feed=atom&title=File%3Aland-wild1.png 2026-06-17T14:38:10Z Revision history for this page on the wiki MediaWiki 1.41.0 https://thechange.wiki/index.php?title=File:land-wild1.png&diff=319&oldid=prev 2022-08-30T13:34:59Z

<p>Elie uploaded <a href="/File:land-wild1.png" title="File:land-wild1.png">File:land-wild1.png</a></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <tr class="diff-title" lang="en"> <td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 09:34, 30 August 2022</td> </tr><tr><td colspan="2" class="diff-notice" lang="en"><div class="mw-diff-empty">(No difference)</div> </td></tr></table>

Elie https://thechange.wiki/index.php?title=File:land-wild1.png&diff=318&oldid=prev 2022-08-30T13:33:49Z

<p>Created page with &quot;==Summary== Remaining natural habitats on Earth. Includes: forest &amp; shrub (green), desert &amp; mountain (orange). ==Methodology== <a href="/Code:isochromic.c" title="Code:isochromic.c">Image generator</a> code: pop &lt;&lt; data/population.data-float64-8640x4320 # population counts crop &lt;&lt; data/cropland.data-float32-4320x2160 # cropland fraction of land past &lt;&lt; data/pasture.data-float32-4320x2160 # pasture fraction of land lw &lt;&lt; data/land_water.png # land=0, water=1 earth&lt;&lt; data/blu...&quot;</p> <p><b>New page</b></p><div>==Summary==<br /> Remaining natural habitats on Earth.<br /> <br /> Includes: forest &amp; shrub (green), desert &amp; mountain (orange).<br /> <br /> ==Methodology==<br /> [[Code:isochromic.c|Image generator]] code:<br /> pop &lt;&lt; data/population.data-float64-8640x4320 # population counts<br /> crop &lt;&lt; data/cropland.data-float32-4320x2160 # cropland fraction of land<br /> past &lt;&lt; data/pasture.data-float32-4320x2160 # pasture fraction of land<br /> lw &lt;&lt; data/land_water.png # land=0, water=1<br /> earth&lt;&lt; data/blue-marble-posterized.png # base layer 1600x800<br /> <br /> # convert the data<br /> pop @@ quantity_to_density # convert to 'people per km^2'<br /> pop /= 2500 # threshold for land to be [[land/built-up|considered 'fully built-up']]<br /> pop &lt;= 4 # helps remove image scaling artifacts<br /> pop :: earth.r<br /> pop &gt;= 0 # helps remove image scaling artifacts<br /> crop &gt;= 0<br /> crop :: earth.r<br /> past &gt;= 0<br /> past :: earth.r<br /> lw *= 0.9<br /> lw :: earth.r<br /> earth.g *= 0.5<br /> <br /> # apply data to base layer<br /> earth.r += lw<br /> earth.r += crop<br /> earth.r += past<br /> earth.r += pop<br /> earth.r @@ 01<br /> earth.g += lw<br /> earth.g += crop<br /> earth.g += past<br /> earth.g += pop<br /> earth.g @@ 01<br /> earth.b += lw<br /> earth.b += crop<br /> earth.b += past<br /> earth.b += pop<br /> earth.b @@ 01<br /> earth &gt;&gt; data/land-wild1.png<br /> <br /> Legend: &quot;Remaining natural habitats on Earth (wild land in green &amp; orange) Read more: &lt;nowiki&gt;https://olam.wiki/Land&lt;/nowiki&gt;&quot;<br /> <br /> ==See also==<br /> * [[:File:land-crop1.png]] - crop land<br /> * [[:File:land-pasture1.png]] - pasture<br /> * [[:File:land-builtup1.png]] - built-up land<br /> * [[:File:land-usage1.png]] - all land uses</div>

Elie