import project, os

from pyvolution.data_manager import sww2dem
from pyvolution.ermapper_grids import read_ermapper_grid

name = project.outputname

#print 'Which variable do you want to export?'
#which_var = int(raw_input('Stage = 0, Absolute Momentum = 1, Depth = 2, Speed = 3  '  ))
which_var = 2

if which_var == 0:  # Stage
    outname = name + '_stage'
    quantityname = 'stage'

if which_var == 1:  # Absolute Momentum
    outname = name + '_momentum'
    quantityname = '(xmomentum**2 + ymomentum**2)**0.5'  #Absolute momentum

if which_var == 2:  # Depth
    outname = name + '_depth'
    quantityname = 'stage-elevation'  #Depth

if which_var == 3:  # Speed
    outname = name + '_speed'
    #quantityname = '((xmomentum/(stage-elevation))**2 + (ymomentum/(stage-elevation))**2)**0.5'  #Speed
    #quantityname = 'xmomentum/(stage-elevation)'  #Speed
    quantityname = '(xmomentum**2 + ymomentum**2)**0.5/(stage-elevation+1.e-30)'  #Speed

    
sww2dem(name, basename_out = outname,
            quantity = quantityname,
            cellsize = 25,       # Trevor would like this at 25
            # define region for viz purposes
            easting_min = project.eminviz,
            easting_max = project.emaxviz,
            northing_min = project.nminviz,
            northing_max = project.nmaxviz,        
            reduction = max, #this is because we want max quantityname
            verbose = True,
            format = 'asc')

#Check

#data = read_ermapper_grid(name)
#print 'Values from %s are in [%f, %f]' %(name, min(data.flat), max(data.flat))