Vent Frais

You can download a copy of the cards on the release page. If you want to print it, I recommend using thick paper (≥300 g/m²) and a professional quality printer. Cards are best with a side of 10cm or 8cm.

Our own cards are 10×10cm on paper "Satiné 300".

If you want a custom deck, with some added question, you can reach out to vent-frais AT therandom DOT space, I'll happily make a custom version for you.

Installation

All dependencies can be installed via poetry:

poetry install

Usage

poetry shell
./cards.py

$ ./cards.py
Usage: cards.py [OPTIONS] COMMAND [ARGS]...

  Utility to manage decks of Vent Frais.

Options:
  --help  Show this message and exit.

Commands:
  add      Create a new card and add it to the deck.
  convert  Convert GFS forcasts into numpy arrays with wind velocities.
  edit     Edit a deck.
  gen
  new      Create a new deck.
  pdf      Generate a PDF of the deck.
  plot     Display various data.
  shapes   Convert a wind .npy file into a shapefile.
  show     Show a deck.

To see an example of usage, see script.sh.

Types of files

• grib2 files are the raw data files from the GFS model, which can then be converted to windfiles using cards.py convert. Forcasts can be found at https://nomads.ncep.noaa.gov/cgi-bin/filter_gfs_0p25.pl. One needs to select:
  • the file ending in f000,
  • The desired level (eg. 10 m above ground)
  • The variables UGRD and VGRD
• windfiles are numpy arrays of shape (lat, lon, 2) which contain the wind velocity at each point of the grid. They can be converted to shapefiles using cards.py shapes.
• shapefiles are json files which contain a single list of shapes. Shapes are dictionaries with a key "t" associated with the type of the shape (c for circle, l for line) and more parameters depending on the type (c: cx, cy, r; l: x1, y1, x2, y2).
• decks are json files which contain a list of cards and a shapefile.