https://github.com/tambeta/daylen

Script for generating an animation of day length isolines onto an azimuthal map
https://github.com/tambeta/daylen

Last synced: about 14 hours ago
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Script for generating an animation of day length isolines onto an azimuthal map

• Host: GitHub
• URL: https://github.com/tambeta/daylen
• Owner: tambeta
• License: bsd-3-clause
• Created: 2016-06-22T18:20:59.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2016-06-23T10:08:06.000Z (over 8 years ago)
• Last Synced: 2023-07-21T18:15:15.151Z (over 1 year ago)
• Language: Python
• Size: 2.87 MB
• Stars: 0
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# daylen 

A Python 3 script for generating an animation of day length isolines onto an

azimuthal map.

Since it's intended as a one-off script, there is no command-line interface

and control of the script is via hardcoded constants. Feel free to fork and

improve the interface, though.

The script requires the [astral](https://pypi.python.org/pypi/astral) module.

The base map was generated using [this](http://ns6t.net/azimuth/azimuth.html)

excellent service.

To generate the animation using ffmpeg:

	$ mkdir out

	$ ./daylen.py

	$ cd out

	$ ffmpeg -pattern_type glob -i '*.png' -vf scale=-2:720 -c:v libx264 -preset slow -crf 20 out.mp4

Results:

* [Sunrise - sunset](https://gfycat.com/CrispPlayfulAllosaurus)

* [Dawn - dusk](https://gfycat.com/YellowishEducatedBlackmamba)