File:Equirectangular-projection+terminator.jpg
| Uploaded by | Xofc |
|---|---|
| Upload date | 2011-12-21T09:24:53Z |
| MIME type | image/jpeg |
| Dimensions | 2048 × 1025 px |
| File size | 816.6 KB |
Summary
| Description |
English: Earth Equirectangular-projection + terminator (around 6 pm UTC near the december solstice)
Français : Terminateur sur une projection cylindrique équidistante de la Terre aux environs de 18h UTC vers le solstice de décembre |
| Date | |
| Source | Own work derivated from File:Equirectangular-projection.jpg |
| Author | Xofc (derivated from a work by user:Mdf who used a NASA image) |
The terminator has been ploted with gnuplot
set angles degrees set yrange [-90:90] set xrange [-180:180] set terminal png enhanced size 2048,1024 set output 'core.png' f(x)=atan(tan(90-23.4)*cos(x+90)) plot f(x)
resized, and used as selection calc for luminosity+contrast enhancement with GIMP. (See fr:WP:Oracle/semaine en cours#Géométrie)
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
 
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
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Category:21st-century maps of the world
Category:Blue Marble 2002 images
Category:CC-Zero
Category:Daylight time maps
Category:December
Category:December solstices
Category:Global maps centered Greenwich
Category:Images with Gnuplot source code
Category:Language-neutral maps
Category:Maps of the world with equirectangular projection
Category:Self-published work
Category:Terminator
Category:Time 18:00 to 18:59