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modelgo.py
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214 lines (189 loc) · 7.56 KB
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import mpkit.easygrib as easygrib
from datetime import datetime, timedelta
from mpl_toolkits.basemap import Basemap
_accepted_mapkey_ = ['asia', 'chinaproper', 'europe', 'northamerica', 'northpole']
class ModelGo:
def __init__(self):
self.Flags = dict(fixed_georange=False, accum=False, two_time=False,
default_zero=False, fixed_map=False, choose_map=False)
self.Settings = dict(accum=list(), interval=6)
self.Params = list()
self.Data = dict()
#easygrib.installproxy()
def choose_map(self):
choice = 0
for i, mapkey in enumerate(_accepted_mapkey_, 1):
print('{:d}. {:s} '.format(i, mapkey), end='')
print()
while choice < 1 or choice > len(_accepted_mapkey_):
choice = int(input('输入需要的地图>'))
self.set_fixed_map(_accepted_mapkey_[choice-1])
def set_choose_map(self):
self.Flags['choose_map'] = True
def set_step(self, step, dateoffset=0):
self.Settings['step'] = step
self.Settings['dateoffset'] = dateoffset
def set_fixed_georange(self, georange):
self.Flags['fixed_georange'] = True
self.georange = georange
def set_fixed_map(self, mapkey):
mapkey = mapkey.lower()
if mapkey not in _accepted_mapkey_:
raise KeyError('Mapkey {:s} is not supported.'.format(mapkey))
self.Flags['fixed_map'] = True
if mapkey == 'asia':
self.set_fixed_georange((-5, 80, 0, 200))
self.map = Basemap(projection='lcc', resolution='l',
llcrnrlat=-5, urcrnrlat=45, llcrnrlon=60, urcrnrlon=200,
lat_0=42.5, lon_0=100)
elif mapkey == 'chinaproper':
self.set_fixed_georange((20, 40, 100, 130))
self.map = Basemap(projection='cyl', resolution='i',
llcrnrlat=20, urcrnrlat=40, llcrnrlon=100, urcrnrlon=130)
elif mapkey == 'europe':
self.set_fixed_georange((-15, 80, 0, 360))
self.map = Basemap(projection='lcc', resolution='l',
llcrnrlat=-5, urcrnrlat=45, llcrnrlon=0, urcrnrlon=140,
lat_0=42.5, lon_0=40)
elif mapkey == 'northamerica':
self.set_fixed_georange((-15, 80, 150, 360))
self.map = Basemap(projection='lcc', resolution='l',
llcrnrlat=-5, urcrnrlat=45, llcrnrlon=220, urcrnrlon=360,
lat_0=42.5, lon_0=260)
elif mapkey == 'northpole':
self.set_fixed_georange((-15, 90, 0, 360))
self.map = Basemap(projection='npaeqd', resolution='l',
boundinglat=15, lon_0=105, round=False)
def set_model(self, model, *args):
self.model = model
self.Params.extend(list(args))
def set_accum(self, *args):
self.Flags['accum'] = True
self.Settings['accum'].extend(list(args))
def set_two_time(self):
self.Flags['two_time'] = True
def set_default_zero(self):
self.Flags['default_zero'] = True
def set_plot(self, f):
self.plot_func = f
def getdata(self, time=False):
for p in self.Params:
if self.Flags['accum'] and not time and p in self.Settings['accum']:
self.Data[p, 'prev'] = self.Data.get(p, 0)
key = (p, self.fcsthour) if time else p
try:
self.Data[key] = easygrib.ModelData(self.model, self.basetime, self.fcsthour,
self.georange, **self.model_dict(p))
except ValueError:
if self.Flags['default_zero']:
self.Data[key] = 0
else:
raise
def model_dict(self, p):
if self.model == 'GFS':
return dict(level=p[0], parameter=p[1])
elif self.model == 'EC':
if len(p) > 1:
return dict(product=p[0], mode=p[1])
else:
return dict(product=p)
elif self.model == 'ERA':
return dict(level=p[0], parameter=p[1])
def run(self):
basetime = input('输入模式时间>')
key = input('输入预报时间>')
if self.Flags['choose_map']:
self.choose_map()
if not self.Flags['fixed_georange']:
self.georange = eval(input('输入数据范围>'))
BTG = BaseTimeGen(basetime)
for bt in BTG.time:
self.basetime = bt
TG = TimeGen(self.basetime, self.Settings['step'], self.Settings['dateoffset'])
TG.input(key)
if self.Flags['two_time']:
for fcsthour in TG.time:
self.fcsthour = fcsthour
self.getdata(time=True)
self.fcsthour = TG.time[0]
self.fcsthour2 = TG.time[1]
self.plot_func(self)
else:
for fcsthour in TG.time:
print(fcsthour)
self.fcsthour = fcsthour
self.getdata()
self.plot_func(self)
class TimeGen:
def __init__(self, basetime, step=24, dateoffset=0):
if isinstance(basetime, datetime):
self.basetime = basetime
else:
self.basetime = datetime.strptime(basetime, '%Y%m%d%H')
self.step = step
self.dateoffset = dateoffset
def input(self, key):
self.time = list()
self.gen(key)
def gen(self, key):
if ' ' in key:
for k in key.split():
self.gen(k)
return
elif '~' in key:
return self.stepgen(key)
else:
return self.singlegen(key)
def stepgen(self, key):
sharp = False
elements = tuple(key.split('~'))
if len(elements) == 2:
start, stop = elements
step = None
elif len(elements) == 3:
start, stop, step = elements
if start.startswith('d'):
if step:
step = int(step) * 24
else:
step = 24
else:
if not step:
step = self.step
else:
if step.endswith('!'):
sharp = True
step = step[:-1]
step = int(step)
starttime = self.convert(start)
stoptime = self.convert(stop)
if sharp:
start_n = (starttime // step + 1) * step
stop_n = stoptime // step * step
locallist = list(range(start_n, stop_n+1, step))
if starttime % step != 0:
locallist.insert(0, starttime)
if stoptime % step != 0:
locallist.append(stoptime)
self.time.extend(locallist)
else:
self.time.extend(list(range(starttime, stoptime+1, step)))
def singlegen(self, key):
self.time.append(self.convert(key))
def convert(self, key):
if len(key) == 10:
t = datetime.strptime(key, '%Y%m%d%H')
return (t - self.basetime) // timedelta(hours=1)
elif len(key) == 8:
t = datetime.strptime(key + '00', '%Y%m%d%H')
return (t - self.basetime) // timedelta(hours=1) + self.dateoffset
else:
return int(key)
class BaseTimeGen:
def __init__(self, inputstr):
self.time = list()
basetime = inputstr[:10]
TG = TimeGen(basetime, 6)
TG.input(inputstr)
for t in TG.time:
self.time.append((TG.basetime + timedelta(hours=t)).strftime('%Y%m%d%H'))