Simple Focal Mechanism Generator based on PyGMT

• Demo web page: https://beachball.clam.moe
• Based on previous work: https://github.com/sean0921/workshop_demo_20210805
• Idea: http://qcntw.earth.sinica.edu.tw/beachball/

Requirements

• see pyproject.toml

Create Virtual Environment

• make init

Run the Web Application

• make run

Try the Web Application

• Linux / WSLg: use simplemeca-client project.

Method

• URL: POST /simplemeca

• Header:

  Key	Value	Required
  Content-Type	application/json	Required

• Body Json Parameters: (All Required)

  • strike
    float
  • dip
    float
  • rake
    float
  • color_r
    float
    R in RGB colors
  • color_g
    float
    G in RGB colors
  • color_b
    float
    B in RGB colors
  • title
    string

• Response

{'image_url': 'http://127.0.0.1:5000/static/<sha256-format>.png'}

Examples

• example_payload.json

TODO

• Add alternative cloud backend to herokuapp: https://blog.heroku.com/next-chapter
• Add automated test code
• Support arguments of moment tensor decompositions:

#X Y depth mrr mtt mff mrt mrf mtf exp newX newY title
gmt meca -Rg -JN15c -Sm2c -png << EOF
-176.96 -29.25 47.8 7.680 0.090 -7.770 1.390 4.520 -3.260 26 0 0 title
EOF

• Refactor a customized frontend
• Support Chinese

Known Issues

• Ghostscript does not support webp output, so only consider png or jpg format.
• GMT 5/6 (PyGMT) realtime performance is worser than legacy GMT 4.x: GenericMappingTools/gmt#587

Credit

• Beachball Frontend: IES, Academia Sinica
• Deployment: GitHub Actions, Fly.io

Resources

• PyGMT documentation
• GMT documentation
• GMT 中文手冊