#!/usr/bin/env python
# Wenchang Yang (wenchang@princeton.edu)
# Mon Sep 19 13:41:47 EDT 2022
if __name__ == '__main__':
    import sys
    from misc.timer import Timer
    tt = Timer('start ' + ' '.join(sys.argv))
import sys, os.path, os, glob, datetime
import xarray as xr, numpy as np, pandas as pd, matplotlib.pyplot as plt
#more imports
from misc.seasons import sel_season
from misc.ttest import ttest_ind
#
if __name__ == '__main__':
    tt.check('end import')
#
#start from here
season = 'JJA'
lmr_version = '2019'
years = slice(1620,1640)
def do_season_anom(da, season):
    da = da.pipe(sel_season, season=season).groupby('time.year').mean('time').mean('ens')
    da0 = da
    da1 = da.sel(year=years)

    daa,pvalue = ttest_ind(da1, da0, dim='year')
    return daa, pvalue

ifile = f'precip_AM2.1p1_LMR2019SST1551_ens_tigercpu_intelmpi_18_30PE_5ens_1551-1650_monthly.nc'
da = xr.open_dataarray(ifile).load()
 
daa,pvalue = do_season_anom(da, season)
print(da)
 
if __name__ == '__main__':
    from wyconfig import * #my plot settings
    from geoplots import mapplot
    cmap = 'BrBG'
    func = lambda da: da.sel(lon=slice(60, 180), lat=slice(0,60))
    daa.pipe(func).plot.contourf(cmap=cmap, levels=21)
    pvalue.where(pvalue<0.05).pipe(func).plot.contourf(colors='none', hatches=['......'], add_colorbar=False)
    mapplot()
    
    #savefig
    if 'savefig' in sys.argv or 's' in sys.argv:
        figname = __file__.replace('.py', f'.png')
        if 'overwritefig' in sys.argv or 'o' in sys.argv:
            wysavefig(figname, overwritefig=True)
        else:
            wysavefig(figname)
    tt.check(f'**Done**')
    print()
    if 'notshowfig' in sys.argv:
        pass
    else:
        plt.show()