#!/usr/bin/env python
# Wenchang Yang (wenchang@princeton.edu)
# Tue Jun 29 16:14:32 EDT 2021
if __name__ == '__main__':
    from misc.timer import Timer
    tt = Timer(f'start {__file__}')
import sys, os.path, os, glob, datetime
import xarray as xr, numpy as np, pandas as pd, matplotlib.pyplot as plt
#more imports
import geoxarray
#
if __name__ == '__main__':
    tt.check('end import')
#
#start from here
tspan = slice('1981','2010')
ofile_nc = __file__.replace('.py', '.nc')
if os.path.exists(ofile_nc):
    da = xr.open_dataarray(ofile_nc)
    print('[loaded]:', ofile_nc)
else:
    ifile = 'data_tmax_AM4urban_amip_5ens_1870-2014.nc'
    #sel_region = lambda x: x.sel(lon=slice(360-125, 360-117), lat=slice(43, 54))
    print('loading...')
    da = xr.open_dataarray(ifile).sel(time=tspan).load()
    print('calculating...')
    da = da.groupby('time.year').max('time').mean('year').mean('en')
    print('saving...')
    da.to_dataset(name='TXx').to_netcdf(ofile_nc)
    print('[saved]:', ofile_nc)
 
if __name__ == '__main__':
    from wyconfig import * #my plot settings
    from geoplots import mapplot
    fig, ax = plt.subplots(figsize=(6,6))
    da.pipe(lambda x: x-273.15).assign_attrs(units='$^\circ$C').plot.contourf(ax=ax, levels=np.arange(20,41, 2), cmap='RdBu_r', extend='both')
    mapplot(ax=ax, xticks=np.arange(360-125, 360-117+1), yticks=np.arange(43, 54+1))
    ax.set_title('Mean TXx from GFDL-AM4urban AMIP (1981-2010)')
    ax.set_xlabel('')
    ax.set_ylabel('')
    """
    from geoplots.cartopy.api import cartoplot
    da.pipe(lambda x: x-273.15).assign_attrs(units='$^\circ$C').pipe(cartoplot, proj='cyl', levels=np.arange(20,41), extend='both', figsize=(6,6))
    """
    
    #savefig
    if 'savefig' in sys.argv:
        figname = __file__.replace('.py', f'.png')
        wysavefig(figname)
    tt.check(f'**Done**')
    plt.show()