source: documentation/requirements/plotting_module_requirements.txt @ 2641

Requirements for module to plot data after simulation run.

31 March 2006



1.      The module shall read a SWW file and plot the time series for the prescribed quantities at defined gauge locations.

1.1     The prescribed quantities must be a name of an existing quantity or an expression involving existing quantities.
1.1.1   The default quantity will be 'depth'.
1.1.2   The user can define a list of quantities. The possibilities are the conserved quantitues of the shallow water wave equation and other quantities which can be derived from those, i.e.['depth', 'xmomentum', 'ymomentum', 'momentum', 'velocity', 'bearing'].
1.1.3   Velocity should be calculated as absolute momentum divided by depth.
1.1.4   Absolute momentum should be calculated as sqrt(xmomentum^2 + ymomentum^2).
1.1.5   Bearing should return the angle of the velocity vector from North.

1.2     The gauge locations should be defined in a separate file.
1.2.1   The gauges file should contain the gauge name and location defined in eastings and northings.
1.2.2   The gauge file should be a comma separated file.

1.3     The module should be contained in data_manager.py
1.3.1   The output should be available as data and graphics.
1.3.2   The default output shall be graphics.
1.3.3   The output should be available for a prescribed time range.
1.3.4   The default time range is the complete time series.
1.3.5   The output should be stored in the same directory as the SWW file.
    
The outline of the module is as follows:

def sww2timeseries(swwfile,
                   gauge_filename,
                   gauge_data_outname,
                   quantity = None,
                   time_min = None,
                   time_max = None,
                   verbose = False):

    # extract gauge locations from gauge file
    
    # extract all quantities from sww file
    
    # loop through appropriate range of time
    
    # plot prescribed quantities and export data if requested
    

    return


where

swwfile defines the input sww file
gauge_filename defines the gauge (name, easting, northing)
gauge_data_outname defined the name of the output data file (if required)
time_min defines the beginning of the time range 
time_max defines the end of the time range