wxgen 0.2.0a1

Installation

Ubuntu

Install the required pacakges:

sudo apt-get update
sudo apt-get install netcdf-bin libnetcdf-dev libhdf5-serial-dev
sudo apt-get install python-setuptools python-pip
sudo apt-get install python-numpy python-scipy python-matplotlib python-mpltoolkits.basemap

Then install wxgen by executing the following inside the extracted folder:

sudo pip install .

This will create the executable /usr/local/bin/wxgen. If /user/local/bin is not in your PATH environment variable, then add it (i.e add export PATH=/usr/local/bin/:$PATH to ~/.bashrc). If you do not have sudo privileges do:

pip install .

This will create the executable ~/.local/bin/wxgen. Add the folder to your PATH environment variable (if necessary).

If you are working on the code, the -e flag ensures that you do not need to rerun pip install every time you make changes to the code:

sudo pip install -e .

Example use

Wxgen has three commands. The first simulates sequences of weather as follows:

wxgen sim -db examples/database.nc -n 10 -t 1000 -o output.nc

This command uses a NetCDF database file and creates 10 trajectories that are 100 days long. Results are stored in output.nc. In order to evaluate the performance of the generated data, a “truth” file can be created using the following command:

wxgen truth -db examples/database.nc -o truth.nc

This command uses the day 1 forecasts from the database as the truth, and joins these together into a sequence that spans the dates in the dataset.

Finally, the generated sequences can be evaluated using th verif command:

wxgen verif -truth truth.nc output.nc -m timeseries
wxgen verif -truth truth.nc output.nc -m variance

The -m switch selects the verification metric, in this case a timeseries.

Copyright and license

Copyright (C) 2017 MET Norway. Wxgen is licensed under LGPL version 3 or (at your option) any later version.