def __FCLOUD__(self):
val = self.variables["CLOUD"] >= 5
var = PseudoNetCDFVariable(self, "FCLOUD", "i", ("TSTEP", "LAY", "ROW", "COL"), values=array(val, dtype="i"))
var.units = "None"
var.long_name = "FCLOUD".ljust(16)
var.var_desc = "FCLOUD".ljust(16)
return var
def ConvertCAMxTime(date, time, nvars):
class temp:
pass
f = temp()
f.dimensions = {'TSTEP': date.shape[0], 'VAR': nvars, 'DATE-TIME': 2}
a = array([date, time], dtype='i').swapaxes(0, 1)
if len(a.shape) == 2:
a = a[:, newaxis, :]
date = a[:, :, 0]
if (date < 70000).any():
date += 2000000
else:
date += 1900000
time = a[:, :, 1]
while not (time == 0).all() and time.max() < 10000:
time *= 100
a = PseudoNetCDFVariable(f,
'TFLAG',
'i', ('TSTEP', 'VAR', 'DATE-TIME'),
values=a[:, [0], :].repeat(nvars, 1))
a.units = 'DATE-TIME'.ljust(16)
a.long_name = 'TFLAG'.ljust(16)
a.var_desc = a.long_name
return a
def __add_variables(self):
v = self.createVariable(
'TFLAG', 'i', ('TSTEP', 'VAR', 'DATE-TIME'), keep=True)
v[:] = self.__windfile.variables['TFLAG'][self.__timeslice]
v.long_name = 'Time flag'
v.units = 'DATE-TIME'
if self.__force_stagger and self.__windfile.LSTAGGER == 0:
warn('Cell centered values are being averaged as though ' +
'staggered. Could just be pre v4.3 file that was actually ' +
'staggered')
for k in ['U', 'V']:
if self.__force_stagger or self.__windfile.LSTAGGER != 0:
if k == 'U':
preproc = CenterCAMxU
elif k == 'V':
preproc = CenterCAMxV
else:
preproc = CenterTime
var = self.__windfile.variables[k]
v = PseudoNetCDFVariable(
self, k, 'f', ('TSTEP', 'LAY', 'ROW', 'COL'),
values=preproc(var))
v.units = var.units
v.long_name = k.ljust(16)
v.var_desc = (k + ' at center').ljust(16)
self.variables[k] = PseudoNetCDFVariableConvertUnit(
v, self.__outunit)
def __variables(self, pk, proc_spc):
if proc_spc in self.__ipr_record_type.names:
proc = proc_spc
proc_spc = proc_spc + '_' + self.spcnames[0]
return PseudoNetCDFVariable(
self,
proc_spc,
'f', ('TSTEP', 'LAY', 'ROW', 'COL'),
values=self.__memmaps[pk][:, 0, :, :, :][proc].swapaxes(
1, 3).swapaxes(2, 3))
if proc_spc == 'TFLAG':
thisdate = self.__memmaps[pk][:, 0, :, :, :]['DATE'].swapaxes(
1, 3).swapaxes(2, 3)[..., 0, 0, 0]
thistime = self.__memmaps[pk][:, 0, :, :, :]['TIME'].swapaxes(
1, 3).swapaxes(2, 3)[..., 0, 0, 0]
return ConvertCAMxTime(thisdate, thistime,
len(self.groups[pk].dimensions['VAR']))
for k in self.__ipr_record_type.names:
proc = proc_spc[:len(k)]
spc = proc_spc[len(k) + 1:]
if proc == k and spc in self.spcnames:
spc = self.spcnames.index(spc)
dvals = self.__memmaps[pk][:, spc][proc].swapaxes(1,
3).swapaxes(
2, 3)
return self.__decorator(
proc_spc,
PseudoNetCDFVariable(self,
proc_spc,
'f', ('TSTEP', 'LAY', 'ROW', 'COL'),
values=dvals))
raise KeyError("Bad!")
def setUp(self):
from PseudoNetCDF import PseudoNetCDFFile
mrg = self.mrg = PseudoNetCDFFile()
mrg.createDimension('TSTEP', 9)
mrg.variables = dict(EMIS_NO=PseudoNetCDFVariable(mrg,
'EMIS',
'f', ('TSTEP'),
values=arange(9),
units='ppb'),
CHEM_NO=PseudoNetCDFVariable(mrg,
'CHEM',
'f', ('TSTEP'),
values=arange(9)),
EMIS_NO2=PseudoNetCDFVariable(mrg,
'EMIS',
'f', ('TSTEP'),
values=arange(9),
units='ppb'),
CHEM_NO2=PseudoNetCDFVariable(mrg,
'CHEM',
'f', ('TSTEP'),
values=arange(9),
units='ppb'))
self.processes = {}
self.species = dict(
NO=Species('NO'),
NO2=Species('NO2'),
)
exec('NOx = NO + NO2', None, self.species)
self.testProcessFromCMAQ()
def __add_variables(self):
tsteps=len(self.dimensions['TSTEP'])
lays=len(self.dimensions['LAY'])
rows=len(self.dimensions['ROW'])
cols=len(self.dimensions['COL'])
offset=len(self.__time_hdr_fmts)+2
block=(rows*cols+2)*2*lays
out_idx=zeros(self.__memmap.shape,'b')
for t in range(tsteps):
start=(t+1)*offset+t*block+t*self.__dummy_length
stop=start+block
out_idx[start:stop].reshape(lays*2,rows*cols+2)[:,1:-1]=1
out_idx[start:stop].reshape(lays*2,rows*cols+2)[:,[0,-1]]=2
out_idx[start-offset:start]=3
buffer=self.__memmap[out_idx==2].reshape(tsteps,lays,2,2)
if not (buffer[:,:,:,0]==buffer[:,:,:,1]).all():
raise ValueError('Fortran unformatted record start and end padding do not match.')
date=self.__memmap[out_idx==3].reshape(tsteps,(out_idx==3).sum()//tsteps)[:,2].view('>i')
time=self.__memmap[out_idx==3].reshape(tsteps,(out_idx==3).sum()//tsteps)[:,1]
self.variables['TFLAG']=ConvertCAMxTime(date,time,2)
self.variables['U']=self.__decorator('U',PseudoNetCDFVariable(self,'U','f',('TSTEP','LAY','ROW','COL'),values=self.__memmap[out_idx==1].reshape(tsteps,lays,2,rows,cols)[:,:,0,:,:]))
self.variables['V']=self.__decorator('V',PseudoNetCDFVariable(self,'V','f',('TSTEP','LAY','ROW','COL'),values=self.__memmap[out_idx==1].reshape(tsteps,lays,2,rows,cols)[:,:,1,:,:]))
def __DEPTH__(self):
val=CAMxHeightToDepth(self.variables['HGHT'])
var=PseudoNetCDFVariable(self,'DEPTH','f',('TSTEP','LAY','ROW','COL'),values=val)
var.units='m'
var.long_name='RATE'.ljust(16)
var.var_desc='RATE'.ljust(16)
return var
def __PRECIP_RATE__(self):
if "PRECIP" in self.variables.keys():
val = self.variables["PRECIP"]
else:
val = self.variables["RAIN"] + self.variables["SNOW"] + self.variables["GRAUPEL"]
var = PseudoNetCDFVariable(self, "PRECIP_RATE", "f", ("TSTEP", "LAY", "ROW", "COL"), values=(val * 10) ** 1.27)
var.units = "mm/h"
var.long_name = "PRECIP_RATE".ljust(16)
var.var_desc = "PRECIP_RATE".ljust(16)
return var
def __set_var(self, key, vals_idx):
times = len(self.dimensions['TSTEP'])
lays = len(self.dimensions['LAY'])
rows = len(self.dimensions['ROW'])
cols = len(self.dimensions['COL'])
v = PseudoNetCDFVariable(self, key, 'f', ('TSTEP', 'LAY', 'ROW', 'COL'), values = self.__memmap[vals_idx].reshape(times, lays, rows, cols))
v.units = {'COD':'None'}.get(key, 'g/m**3')
v.long_name = key
v.var_desc = key
self.variables[key] = v
def __FCLOUD__(self):
val = self.variables['CLOUD'] >= 5
var = PseudoNetCDFVariable(self,
'FCLOUD',
'i', ('TSTEP', 'LAY', 'ROW', 'COL'),
values=array(val, dtype='i'))
var.units = 'None'
var.long_name = 'FCLOUD'.ljust(16)
var.var_desc = 'FCLOUD'.ljust(16)
return var
def __set_var(self, key, vals_idx):
times = len(self.dimensions['TSTEP'])
lays = len(self.dimensions['LAY'])
rows = len(self.dimensions['ROW'])
cols = len(self.dimensions['COL'])
v = PseudoNetCDFVariable(self,
key,
'f', ('TSTEP', 'LAY', 'ROW', 'COL'),
values=self.__memmap[vals_idx].reshape(
times, lays, rows, cols))
v.units = {'COD': 'None'}.get(key, 'g/m**3')
v.long_name = key
v.var_desc = key
self.variables[key] = v
def __PRECIP_RATE__(self):
if 'PRECIP' in self.variables.keys():
val = self.variables['PRECIP']
else:
val = self.variables['RAIN'] + \
self.variables['SNOW'] + self.variables['GRAUPEL']
var = PseudoNetCDFVariable(self,
'PRECIP_RATE',
'f', ('TSTEP', 'LAY', 'ROW', 'COL'),
values=(val * 10)**1.27)
var.units = 'mm/h'
var.long_name = 'PRECIP_RATE'.ljust(16)
var.var_desc = 'PRECIP_RATE'.ljust(16)
return var
def relhum_ttd(t, td, percent = False, add = True):
"""
t - temperature in K
td - dewpoint temperature in K
;
; Calculate relative humidity given temperature (K)
; and dew point temperature (K)
;
; reference: John Dutton, Ceaseless Wind, 1976
"""
dimensions = getattr(t, 'dimensions', getattr(td, 'dimensions', ('unknown',)))
gc = 461.5 # [j/{kg-k}] gas constant water vapor
gc = gc/(1000.*4.186) # [cal/{g-k}] change units
# lhv=latent heat vap
lhv = ( 597.3-0.57*(t-273.) ) # dutton top p273 [empirical]
values = np.ma.exp( (lhv/gc)*(1.0/t - 1.0/td))
if percent:
values *= 100.
rh = PseudoNetCDFVariable(None, 'RH', 'f', dimensions, values = values )
rh.long_name = "relative humidity"
if percent:
rh.units = "%"
else:
rh.units = "fraction"
rh.short_name = 'RH'
return rh
def __var_get(self, key):
lays = len(self.dimensions['LAY'])
times = len(self.dimensions['TSTEP'])
rows = len(self.dimensions['ROW'])
cols = len(self.dimensions['COL'])
surf = 1
air = 2
time = 3
date = 4
out_idx = zeros(self.__memmap.shape,
dtype='b').reshape(times, lays + 1, rows * cols + 4)
out_idx[:, 0, 3:-1] = surf
out_idx[:, 1:, 3:-1] = air
out_idx[:, :, 1] = time
out_idx[:, :, 2] = date
out_idx = out_idx.ravel()
buf = self.__memmap[out_idx == 0].reshape((lays + 1) * times, 2)
if not (buf[:, 0] == buf[:, 1]).all():
raise ValueError("Buffer")
v = self.variables['SURFTEMP'] = PseudoNetCDFVariable(
self,
'SURFTEMP',
'f', ('TSTEP', 'ROW', 'COL'),
values=self.__memmap[out_idx == 1].reshape(times, rows, cols))
v.units = 'K'
v.long_name = 'SURFTEMP'
v.var_desc = 'SURFTEMP'
v = self.variables['AIRTEMP'] = PseudoNetCDFVariable(
self,
'AIRTEMP',
'f', ('TSTEP', 'LAY', 'ROW', 'COL'),
values=self.__memmap[out_idx == 2].reshape(times, lays, rows,
cols))
v.units = 'K'
v.long_name = 'AIRTEMP'
v.var_desc = 'AIRTEMP'
date = self.__memmap[out_idx == date].view('>i')[0:None:lays + 1]
time = self.__memmap[out_idx == time].view('>f')[0:None:lays + 1]
self.variables['TFLAG'] = PseudoNetCDFVariable(
self,
'TFLAG',
'f', ('TSTEP', 'VAR', 'DATE-TIME'),
values=ConvertCAMxTime(date, time, 2))
return self.variables[key]
def __var_get(self, key):
lays = len(self.dimensions['LAY'])
times = len(self.dimensions['TSTEP'])
rows = len(self.dimensions['ROW'])
cols = len(self.dimensions['COL'])
hght = 1
pres = 2
time = 3
date = 4
out_idx = zeros(self.__memmap.shape,
dtype='b').reshape(times, lays, 2, rows * cols + 4)
out_idx[:, :, 0, 3:-1] = hght
out_idx[:, :, 1, 3:-1] = pres
out_idx[:, :, :, 1] = time
out_idx[:, :, :, 2] = date
out_idx = out_idx.ravel()
buf = self.__memmap[out_idx == 0].reshape(lays * 2 * times, 2)
if not (buf[:, 0] == buf[:, 1]).all():
raise ValueError("Buffer")
v = self.variables['HGHT'] = PseudoNetCDFVariable(
self,
'HGHT',
'f', ('TSTEP', 'LAY', 'ROW', 'COL'),
values=self.__memmap[out_idx == 1].reshape(times, lays, rows,
cols))
v.units = 'm'
v.long_name = 'HGHT'.ljust(16)
v.var_desc = 'Top Height'
v = self.variables['PRES'] = PseudoNetCDFVariable(
self,
'PRES',
'f', ('TSTEP', 'LAY', 'ROW', 'COL'),
values=self.__memmap[out_idx == 2].reshape(times, lays, rows,
cols))
v.units = 'hPA'
v.long_name = 'PRES'.ljust(16)
v.var_desc = 'Pressure at center'
self.variables['TFLAG'] = ConvertCAMxTime(
self.__memmap[out_idx == 4][slice(None, None,
len(self.dimensions['LAY']) *
2)].view('>i'),
self.__memmap[out_idx == 3][slice(None, None,
len(self.dimensions['LAY']) *
2)], len(self.dimensions['VAR']))
return self.variables[key]
def __getitem__(self, key):
if isinstance(key, Species):
values = array([self.data[spc] for spc in key.spc_dict.keys()]).sum(0)
elif key in self.data.keys():
values = self.data[key]
else:
new_data = dict([(k, v[key]) for k, v in self.data.iteritems()])
return Process(self.name, self.__units, **new_data)
return PseudoNetCDFVariable(self, self.name, values.dtype.char, ('TSTEP',), values = values, units = self.__units)
def __time_stks(self):
ep = self.__endianprefix
i = offset = 0
nspcs = len(self.__spc_names)
nstks = len(self.dimensions['NSTK'])
date_block_size = 6
stk_block_size = 4
stk_props_size = 2 + nstks * 5
emiss_block_size = nspcs * (nstks + 13)
hour_block_size = date_block_size + stk_block_size + stk_props_size + emiss_block_size
data = self.__memmap[self.__data_start:]
data = data.reshape(data.size // hour_block_size, hour_block_size)
ntimes = data.shape[0]
self.createDimension('TSTEP', ntimes)
self.createDimension('DATE-TIME', 2)
start = 0
end = date_block_size
date_times = data[:, start:end]
dates = date_times[:, [1, 3]].view(ep + 'i')
times = date_times[:, [2, 4]]
start = end
end = start + stk_block_size
nstk_hdr = data[:, start:end].view(ep + 'i')
if not (nstks == nstk_hdr[:, 2:3]).all():
raise ValueError("Number of stacks varies with time")
start = end
end = start + stk_props_size
self.__hourly_stk_props = data[:, start:end][:, 1:-1].reshape(
ntimes, nstks, 5)
start = end
end = start + emiss_block_size
if not end == data.shape[1]:
raise ValueError("Incorrect shape")
self.__emiss_data = data[:, start:].reshape(ntimes, nspcs,
13 + nstks)[:, :, 12:-1]
bdates = dates[:, 0]
btimes = times[:, 0]
edates = dates[:, 1]
etimes = times[:, 1]
self.NSTEPS = ntimes
self.createDimension('VAR', len(self.__spc_names) + 3)
self.variables['TFLAG'] = ConvertCAMxTime(bdates, btimes,
len(self.dimensions['VAR']))
self.variables['ETFLAG'] = ConvertCAMxTime(edates, etimes,
len(self.dimensions['VAR']))
v = self.variables['NSTKS'] = PseudoNetCDFVariable(self,
'NSTKS',
'i', ('TSTEP', ),
values=array(
nstk_hdr[:, 2]))
v.units = '#'.ljust(16)
v.long_name = 'NSTKS'.ljust(16)
v.var_desc = v.long_name
def __variables(self, k):
outunit = self.__outunit.get(k, None)
var = self.__file.variables[k]
if outunit is None:
outunit = var.units
tmpvar = PseudoNetCDFVariable(self, k, var.typecode(), var.dimensions,
values=CenterTime(var))
return PseudoNetCDFVariableConvertUnit(self.__decorator(var, tmpvar),
outunit)
def __variables(self, proc_spc):
if proc_spc == 'TFLAG':
time = self.variables['TIME_%s' %
char.decode(self.spcnames)[0][1].strip()]
date = self.variables['DATE_%s' %
char.decode(self.spcnames[0])[1].strip()]
self.variables['TFLAG'] = PseudoNetCDFVariable(
self,
'proc_spc',
'i', ('TSTEP', 'VAR', 'DATE-TIME'),
values=ConvertCAMxTime(date[:, 0, 0, 0], time[:, 0, 0, 0],
len(self.dimensions['VAR'])))
return self.variables['TFLAG']
self.variables.clear()
for k in self.proc_dict:
proc = proc_spc[:len(k)]
spc = proc_spc[len(k) + 1:]
if proc == k and spc.ljust(10) in char.decode(
self.spcnames['SPECIES']).tolist():
spcprocs = self.__readalltime(spc)
for p, plong in self.proc_dict.items():
var_name = p + '_' + spc
# IPR units are consistent with 'IPR'
if p == 'UCNV':
units = 'm**3/mol'
elif p == 'AVOL':
units = 'm**3'
else:
units = get_uamiv_units('IPR', spc)
self.variables[var_name] = PseudoNetCDFVariable(
self,
var_name,
'f', ('TSTEP', 'LAY', 'ROW', 'COL'),
values=spcprocs[p],
units=units,
var_desc=(var_name).ljust(16),
long_name=(var_name).ljust(16))
del spcprocs
return self.variables[proc_spc]
raise KeyError("Bad!")
def __variables(self, k):
dimensions = ('TSTEP', 'LAY', 'ROW', 'COL')
outvals = self.__memmap__[self.CURRENT_GRID][k]['DATA'][:, :, :, :]
unit = get_uamiv_units('INSTANT ', k)
return PseudoNetCDFVariable(self,
k,
'f',
dimensions,
values=outvals,
units=unit)
def __variables(self, pk, rxn):
if rxn == 'TFLAG':
return ConvertCAMxTime(self.__memmaps[pk][:, 0, 0, 0]['DATE'],
self.__memmaps[pk][:, 0, 0, 0]['TIME'],
len(self.groups[pk].dimensions['VAR']))
return self.__decorator(
rxn,
PseudoNetCDFVariable(self,
rxn,
'f', ('TSTEP', 'LAY', 'ROW', 'COL'),
values=self.__memmaps[pk][rxn].swapaxes(
1, 3).swapaxes(2, 3)))
def wswd_uv(u, v, return_radians = False):
"""
Arguments:
u - array of u-component winds
v - array of v-domponent winds
return_radians - convert direction to radians
Returns:
ws, wd - wind speed and direction (from direction)
https://www.eol.ucar.edu/projects/ceop/dm/documents/refdata_report/eqns.html
"""
dimensions = getattr(u, 'dimensions', getattr(v, 'dimensions', ('unknown',)))
units = getattr(u, 'units', getattr(v, 'units', 'unknown'))
wind_speed = np.sqrt(u**2 + v**2);
uvarctan = np.arctan(u/v)
wind_direction = np.where(v<0, uvarctan*180./np.pi, uvarctan * 180./np.pi + 180.)
if return_radians:
wind_direction = np.radians(wind_direction)
ws = PseudoNetCDFVariable(None, 'WS', wind_speed.dtype.char, dimensions, values = wind_speed, units = units, short_name = 'WS')
wd = PseudoNetCDFVariable(None, 'WD', wind_speed.dtype.char, dimensions, values = wind_direction, units = 'radians' if return_radians else 'degrees', short_name = 'WD')
return ws, wd
def loadVars(self, start, n, pagrid=0):
domain = self.padomains[pagrid]
istart = domain['istart']
iend = domain['iend']
jstart = domain['jstart']
jend = domain['jend']
kstart = domain['blay']
kend = domain['tlay']
variables = self.variables
nk = kend + 1 - kstart
nj = jend + 1 - jstart
ni = iend + 1 - istart
nrec = nk * ni * nj
temp = zeros((nrec, self.NRXNS), 'f')
shape = (self.NSTEPS, ) + tuple(
eval('map(len, (LAY, ROW, COL))', None, self.dimensions))
variables.clear()
end = min(start + n, self.NRXNS + 1)
start = max(1, end - n)
for rxn in range(start, end):
key = 'RXN_%02d' % rxn
variables[key] = PseudoNetCDFVariable(
self,
key,
'f', ('TSTEP', 'LAY', 'ROW', 'COL'),
values=zeros(shape, 'f'),
units='ppm/hr',
var_desk=key.ljust(16),
long_name=key.ljust(16))
self._seek(pagrid=0, i=istart, j=jstart, k=kstart)
for ti, (d, t) in enumerate(self.timerange()):
record = fromfile(self._rffile,
dtype=self._record_dtype,
count=nrec)
temp[:] = record['IRRS']
date = record['DATE']
time = record['TIME']
id = record['I']
jd = record['J']
kd = record['K']
assert ((id == arange(istart, iend + 1)[None, :, None].repeat(
nk, 2).repeat(nj, 0).ravel()).all())
assert ((kd == arange(kstart, kend + 1)[None, None, :].repeat(
ni, 1).repeat(nj, 0).ravel()).all())
assert (((jd == arange(jstart, jend + 1).repeat(ni * nk,
0))).all())
assert ((date == d).all() and (time == t).all())
for rxn in range(start, end):
variables['RXN_%02d' %
rxn][ti, :, :, :] = temp[:, rxn - 1].reshape(
nj, ni, nk).swapaxes(1, 2).swapaxes(0, 1)
def uv_wswd(ws, wd, isradians = False):
"""
Arguments:
ws - wind speed array
wd - wind direction array (in degrees unless isradians is set to true)
isradians - False if WD is in degrees
Returns:
U, V - u-component and v-component winds
https://www.eol.ucar.edu/projects/ceop/dm/documents/refdata_report/eqns.html
"""
dimensions = getattr(u, 'dimensions', getattr(v, 'dimensions', ('unknown',)))
units = getattr(ws, 'units', 'unknown')
if isradians:
direction = wd
else:
direction = np.radians(wd)
wind_speed = ws
U = -np.sin(direction) * wind_speed;
V = -np.cos(direction) * wind_speed;
u = PseudoNetCDFVariable(None, 'U', U.dtype.char, dimensions, values = U, units = units, short_name = 'U')
v = PseudoNetCDFVariable(None, 'V', V.dtype.char, dimensions, values = V, units = units, short_name = 'V')
return u, v
def __variables(self, k):
tsteps = len(self.dimensions['TSTEP'])
lays = len(self.dimensions['LAY'])
rows = len(self.dimensions['ROW'])
cols = len(self.dimensions['COL'])
return self.__decorator(
k,
PseudoNetCDFVariable(self,
k,
'f', ('TSTEP', 'LAY', 'ROW', 'COL'),
values=self.__memmap.reshape(
self.__records,
self.__record_items)[:, 3:-1].reshape(
tsteps, lays, rows, cols)))
def __add_variables(self):
v=self.createVariable('TFLAG','i',('TSTEP','VAR','DATE-TIME'),keep=True)
v[:] = self.__windfile.variables['TFLAG'][self.__timeslice]
v.long_name='Time flag'
v.units='DATE-TIME'
if self.__force_stagger and self.__windfile.LSTAGGER==0:
warn('Cell centered values are being averaged as though staggered'+ \
'Could just be pre v4.3 file that was actually staggered')
for k in ['U','V']:
if self.__force_stagger or self.__windfile.LSTAGGER!=0:
if k=='U':
preproc=CenterCAMxU
elif k=='V':
preproc=CenterCAMxV
else:
preproc=CenterTime
var=self.__windfile.variables[k]
v=PseudoNetCDFVariable(self,k,'f',('TSTEP','LAY','ROW','COL'),values=preproc(var))
v.units=var.units
v.long_name=k.ljust(16)
v.var_desc=(k+' at center').ljust(16)
self.variables[k]=PseudoNetCDFVariableConvertUnit(v,self.__outunit)
def ConvertCAMxTime(date,time,nvars):
class temp:
pass
f = temp()
f.dimensions = {'TSTEP': date.shape[0], 'VAR': nvars, 'DATE-TIME': 2}
a=array([date,time],dtype='i').swapaxes(0,1)
if len(a.shape)==2:
a=a[:,newaxis,:]
date=a[:,:,0]
if (date<70000).any():
date+=2000000
else:
date+=1900000
time=a[:,:,1]
while not (time==0).all() and time.max()<10000:
time*=100
a=PseudoNetCDFVariable(f,'TFLAG','i',('TSTEP','VAR','DATE-TIME'),values=a[:,[0],:].repeat(nvars,1))
a.units='DATE-TIME'.ljust(16)
a.long_name='TFLAG'.ljust(16)
a.var_desc=a.long_name
return a
def wmrq_ptd(p, td, dry = False, kgkg = False):
"""
p - pressure in Pa
td - temperature in degrees celcius
dry - return results in mixing ratio or specific humidity in dry air
kgkg - return results in kg/kg instead of g/kg
"""
dimensions = getattr(p, 'dimensions', getattr(td, 'dimensions', ('unknown',)))
p = np.asarray(p)
td = np.asarray(td)
# ncl: q = mixhum_ptd (p,td,option) [ q=g/kg ]
# p - PA
# td - K
# local
# INTEGER N
# DOUBLE PRECISION T0, PA2MB
# DATA T0 /273.15d0/
# DATA PA2MB /0.01d0 /
T0 = 273.15
PA2MB = .01
# mixing ratio (kg/kg)
# the function wants hPA (mb) and degrees centigrade
WMR = wmr_skewt_pt(p*PA2MB, td - T0) * 0.001
# if iswit=2 calculate specific humidity (kg/kg)
if dry:
name = 'W'
long_name = 'mass of water per mass of dry air'
else:
name = 'Q'
long_name = 'mass of water per mass of air (dry+wet)'
WMR = WMR/(WMR + 1.0)
# if iswit < 0 then return g/kg
if kgkg:
WMR *= 1000.
units = 'g/kg'
else:
units = 'kg/kg'
wmr = PseudoNetCDFVariable(None, name, 'f', dimensions, values = WMR, units = units, long_name = long_name )
wmr.short_name = name
return wmr
def __getitem__(self, key):
units = self.__units
if isinstance(key, Species):
values = array([
self.data[spc] * prop['stoic']
for spc, prop in key.spc_dict.items()
]).sum(0)
units = dict([(k, self.__units[k]) for k in key.spc_dict.keys()])
elif key in self.data.keys():
values = self.data[key]
units = {key: self.__units[key]}
else:
new_data = dict([(k, v[key]) for k, v in self.data.iteritems()])
units = {key: self.__units[key]}
return Process(self.name, self.__units, **new_data)
return PseudoNetCDFVariable(self,
self.name,
values.dtype.char, ('TSTEP', ),
values=values,
units=units)
def wmr_ptd( p, td, gkg = False):
"""
Inputs:
p = surface pressure in mb;
Td = dew point in deg C;
Calculates
e = vapor pressure in mb;
Returns
q = specific humidity in kg/kg.
"""
dimensions = getattr(p, 'dimensions', getattr(td, 'dimensions', 'unknown'))
e = 6.112*np.ma.exp((17.67*td)/(td + 243.5));
q = (0.622 * e)/(p - (0.378 * e));
if gkg:
q *= 1000.
units = 'g/kg'
else:
units = 'kg/kg'
Q = PseudoNetCDFVariable(None, 'Q', q.dtype.char, dimensions, units = units, long_name = 'specific humidity in kg/kg', short_name = 'Q', values = q)
return Q
def childvariables(self, k):
for f in self.__files:
if k in f.variables.keys():
v = f.variables[k]
if k=='TFLAG':
v = PseudoNetCDFVariable(self, 'TFLAG', 'i', v.dimensions, values = v[:][:, [0], :].repeat(len(self.dimensions['VAR']), 1))
v.long_name = 'TFLAG'.ljust(16)
v.var_desc = 'TFLAG'.ljust(16)
v.units = 'DATE-TIME'
if k=='LAY' and k in self.dimensions.keys() and len(k.shape) > 1:
if v.shape[1]==1:
dims = list(v.dimensions)
dims[1] = 'SURFLAY'
v.dimensions = tuple(dims)
return v
def __init__(self,
path,
keysubs={'/': '_'},
encoding='utf-8',
default_llod_flag=-8888,
default_llod_value='N/A',
default_ulod_flag=-7777,
default_ulod_value='N/A'):
"""
Arguments:
self - implied input (not supplied in call)
path - path to file
keysubs - dictionary of characters to remove from variable keys and their replacements
encoding - file encoding (utf-8, latin1, cp1252, etc.)
default_llod_flag - flag value for lower limit of detections if not specified
default_llod_value - default value to use for replacement of llod_flag
default_ulod_flag - flag value for upper limit of detections if not specified
default_ulod_value - default value to use for replacement of ulod_flag
Returns:
out - PseudoNetCDFFile interface to data in file.
"""
lastattr = None
PseudoNetCDFFile.__init__(self)
f = openf(path, 'rU', encoding=encoding)
missing = []
units = []
l = f.readline()
if ',' in l:
delim = ','
else:
delim = None
split = lambda s: [s_.strip() for s_ in s.split(delim)]
if split(l)[-1] != '1001':
raise TypeError(
"File is the wrong format. Expected 1001; got %s" %
(split(l)[-1], ))
n, self.fmt = split(l)
n_user_comments = 0
n_special_comments = 0
self.n_header_lines = int(n)
try:
for li in range(self.n_header_lines - 1):
li += 2
l = f.readline()
LAST_VAR_DESC_LINE = 12 + len(missing)
SPECIAL_COMMENT_COUNT_LINE = LAST_VAR_DESC_LINE + 1
LAST_SPECIAL_COMMENT_LINE = SPECIAL_COMMENT_COUNT_LINE + n_special_comments
USER_COMMENT_COUNT_LINE = 12 + len(
missing) + 2 + n_special_comments
if li == PI_LINE:
self.PI_NAME = l.strip()
elif li == ORG_LINE:
self.ORGANIZATION_NAME = l.strip()
elif li == PLAT_LINE:
self.SOURCE_DESCRIPTION = l.strip()
elif li == MISSION_LINE:
self.MISSION_NAME = l.strip()
elif li == VOL_LINE:
self.VOLUME_INFO = ', '.join(split(l))
elif li == DATE_LINE:
l = l.replace(',', ' ').replace('-',
' ').replace(' ',
' ').split()
SDATE = ", ".join(l[:3])
WDATE = ", ".join(l[3:])
self.SDATE = SDATE
self.WDATE = WDATE
self._SDATE = datetime.strptime(SDATE, '%Y, %m, %d')
self._WDATE = datetime.strptime(WDATE, '%Y, %m, %d')
elif li == TIME_INT_LINE:
self.TIME_INTERVAL = l.strip()
elif li == UNIT_LINE:
units.append(l.replace('\n', '').replace('\r', '').strip())
self.INDEPENDENT_VARIABLE = units[-1]
elif li == SCALE_LINE:
scales = [eval(i) for i in split(l)]
if set([float(s) for s in scales]) != set([1.]):
raise ValueError(
"Unsupported: scaling is unsupported. data is scaled by %s"
% (str(scales), ))
elif li == MISSING_LINE:
missing = [eval(i) for i in split(l)]
elif li > MISSING_LINE and li <= LAST_VAR_DESC_LINE:
nameunit = l.replace('\n', '').split(',')
name = nameunit[0].strip()
if len(nameunit) > 1:
units.append(nameunit[1].strip())
elif re.compile('(.*)\((.*)\)').match(nameunit[0]):
desc_groups = re.compile('(.*)\((.*)\).*').match(
nameunit[0]).groups()
name = desc_groups[0].strip()
units.append(desc_groups[1].strip())
elif '_' in name:
units.append(name.split('_')[1].strip())
else:
warn('Could not find unit in string: "%s"' % l)
units.append(name.strip())
elif li == SPECIAL_COMMENT_COUNT_LINE:
n_special_comments = int(l.replace('\n', ''))
elif li > SPECIAL_COMMENT_COUNT_LINE and li <= LAST_SPECIAL_COMMENT_LINE:
colon_pos = l.find(':')
if l[:1] == ' ':
k = lastattr
v = getattr(self, k, '') + l
else:
k = l[:colon_pos].strip()
v = l[colon_pos + 1:].strip()
setattr(self, k, v)
lastattr = k
elif li == USER_COMMENT_COUNT_LINE:
lastattr = None
n_user_comments = int(l.replace('\n', ''))
elif li > USER_COMMENT_COUNT_LINE and li < self.n_header_lines:
colon_pos = l.find(':')
if l[:1] == ' ':
k = lastattr
v = getattr(self, k, '') + l
else:
k = l[:colon_pos].strip()
v = l[colon_pos + 1:].strip()
setattr(self, k, v)
lastattr = k
elif li == self.n_header_lines:
variables = l.replace(',', ' ').replace(' ', ' ').split()
for oc, nc in keysubs.items():
variables = [vn.replace(oc, nc) for vn in variables]
self.TFLAG = variables[0]
except Exception as e:
raise SyntaxError("Error parsing icartt file %s: %s" %
(path, repr(e)))
missing = missing[:1] + missing
scales = [1.] + scales
if hasattr(self, 'LLOD_FLAG'):
llod_values = loddelim.sub('\n', self.LLOD_VALUE).split()
if len(llod_values) == 1:
llod_values *= len(variables)
else:
llod_values = ['N/A'] + llod_values
assert len(llod_values) == len(variables)
llod_values = [get_lodval(llod_val) for llod_val in llod_values]
llod_flags = len(llod_values) * [self.LLOD_FLAG]
llod_flags = [get_lodval(llod_flag) for llod_flag in llod_flags]
else:
llod_flags = [default_llod_flag] * len(scales)
llod_values = [default_llod_value] * len(scales)
if hasattr(self, 'ULOD_FLAG'):
ulod_values = loddelim.sub('\n', self.ULOD_VALUE).split()
if len(ulod_values) == 1:
ulod_values *= len(variables)
else:
ulod_values = ['N/A'] + ulod_values
assert len(ulod_values) == len(variables)
ulod_values = [get_lodval(ulod_val) for ulod_val in ulod_values]
ulod_flags = len(ulod_values) * [self.ULOD_FLAG]
ulod_flags = [get_lodval(ulod_flag) for ulod_flag in ulod_flags]
else:
ulod_flags = [default_ulod_flag] * len(scales)
ulod_values = [default_ulod_value] * len(scales)
data = f.read()
datalines = data.split('\n')
ndatalines = len(datalines)
while datalines[-1] in ('', ' ', '\r'):
ndatalines -= 1
datalines.pop(-1)
data = genfromtxt(StringIO('\n'.join(datalines).encode()),
delimiter=delim,
dtype='d')
data = data.reshape(ndatalines, len(variables))
data = data.swapaxes(0, 1)
self.createDimension('POINTS', ndatalines)
for var, scale, miss, unit, dat, llod_flag, llod_val, ulod_flag, ulod_val in zip(
variables, scales, missing, units, data, llod_flags,
llod_values, ulod_flags, ulod_values):
vals = MaskedArray(dat, mask=dat == miss, fill_value=miss)
tmpvar = self.variables[var] = PseudoNetCDFVariable(self,
var,
'd',
('POINTS', ),
values=vals)
tmpvar.units = unit
tmpvar.standard_name = var
tmpvar.missing_value = miss
tmpvar.fill_value = miss
tmpvar.scale = scale
if hasattr(self, 'LLOD_FLAG'):
tmpvar.llod_flag = llod_flag
tmpvar.llod_value = llod_val
if hasattr(self, 'ULOD_FLAG'):
tmpvar.ulod_flag = ulod_flag
tmpvar.ulod_value = ulod_val
self._date_objs = self._SDATE + vectorize(lambda s: timedelta(
seconds=int(s), microseconds=(s - int(s)) * 1.E6))(
self.variables[self.TFLAG]).view(type=ndarray)
def __variables(self, k):
if k in ['TFLAG', 'ETFLAG', 'NSTKS']:
return self.variables[k]
elif k in ['XSTK', 'YSTK', 'HSTK', 'DSTK', 'TSTK', 'VSTK']:
v = PseudoNetCDFVariable(
self, k, 'f', ('NSTK',), values=self.__stk_props[k].ravel())
v.units = {'XSTK': 'm', 'YSTK': 'm', 'HSTK': 'm',
'DSTK': 'm', 'TSTK': 'K', 'VSTK': 'm/h'}[k]
v.long_name = k.ljust(16)
v.var_desc = k.ljust(16)
return v
elif k in ['IONE', 'ITWO', 'KCELL', 'FLOW', 'PLMHT']:
data_type = {'IONE': 'i', 'ITWO': 'i',
'KCELL': 'i', 'FLOW': 'f', 'PLMHT': 'f'}[k]
v = self.createVariable(k, data_type, ('TSTEP', 'NSTK'))
v.units = {'IONE': '#', 'ITWO': '#', 'KCELL': '#',
'FLOW': 'm**3/hr', 'PLMHT': 'm'}[k]
v.long_name = k.ljust(16)
v.var_desc = k.ljust(16)
vals = self.__hourly_stk_props[:, :, [
'IONE', 'ITWO', 'KCELL', 'FLOW', 'PLMHT'].index(k)]
v[:] = vals.view('>' + data_type)
return v
elif k in self.__spc_names:
vals = self.__emiss_data[:, self.__getspcidx(k), :]
v = PseudoNetCDFVariable(self, k, 'f', ('TSTEP', 'NSTK'),
values=vals)
v.units = 'mole/hr'.ljust(16)
v.long_name = k.ljust(16)
v.var_desc = k.ljust(16)
return v
else:
raise KeyError("Unknown key %s" % k)
def __variables(self,k):
if k in ['TFLAG','ETFLAG','NSTKS']:
return self.variables[k]
elif k in ['XSTK','YSTK','HSTK','DSTK','TSTK','VSTK']:
v=PseudoNetCDFVariable(self,k,'f',('NSTK',),values=self.__stk_props[k].ravel())
v.units={'XSTK':'m','YSTK':'m','HSTK':'m','DSTK':'m','TSTK':'K','VSTK':'m/h'}[k]
v.long_name=k.ljust(16)
v.var_desc=k.ljust(16)
return v
elif k in ['IONE', 'ITWO', 'KCELL','FLOW','PLMHT']:
data_type={'IONE':'i', 'ITWO':'i', 'KCELL':'i','FLOW':'f','PLMHT':'f'}[k]
v=self.createVariable(k,data_type,('TSTEP','NSTK'))
v.units={'IONE':'#', 'ITWO':'#', 'KCELL':'#', 'FLOW':'m**3/hr', 'PLMHT':'m'}[k]
v.long_name=k.ljust(16)
v.var_desc=k.ljust(16)
vals = self.__hourly_stk_props[:,:,['IONE','ITWO','KCELL','FLOW','PLMHT'].index(k)]
v[:] = vals.view('>' + data_type)
return v
elif k in self.__spc_names:
v=PseudoNetCDFVariable(self,k,'f',('TSTEP','NSTK'),values=self.__emiss_data[:,self.__getspcidx(k),:])
v.units='mole/hr'.ljust(16)
v.long_name=k.ljust(16)
v.var_desc=k.ljust(16)
return v
else:
raise KeyError("Unknown key %s" % k)
def getem(key):
thisblock = data[0]['data'][key]
thisdata = thisblock['f6']
assert((thisblock['f3'] == thisblock['f7']).all())
if len(thisdata.shape) == 3:
dims = ('time', 'latitude', 'longitude')
elif thisdata.shape[1] == nlay_in:
dims = ('time', 'layer', 'latitude', 'longitude')
elif thisdata.shape[1] == nlay_in_stag:
dims = ('time', 'layer_stag', 'latitude', 'longitude')
else:
raise ValueError('Wrong layers got %d not %d or %d' %
(thisdata.shape[1], nlay, nlay_stag))
unit = _geos_units.get(key, '')
if dims != ('time', 'latitude', 'longitude'):
thisdatain = thisdata
thisdata = np.zeros([len(self.dimensions[k]) for k in dims],
dtype=thisdata.dtype)
if reduced:
if self.gtype == 'GEOS-4-REDUCED':
# !----------------------------------------------------
# ! GEOS-4: Lump 55 levels into 30 levels, starting
# ! above L=20
# ! Lump levels in groups of 2, then 4. (cf. Mat Evans)
# !----------------------------------------------------
#
# ! Lump 2 levels together at a time
lump_groups = [[0, ], [1, ], [2, ], [3, ], [4, ],
[5, ], [6, ], [7, ], [8, ], [9, ],
[10, ], [11, ], [12, ], [13, ], [14, ],
[15, ], [16, ], [17, ], [18, ]] + \
[[19, 20], [21, 22],
[23, 24], [25, 26]] + \
[[27, 28, 29, 30], [31, 32, 33, 34],
[35, 36, 37, 38], [39, 40, 41, 42],
[43, 44, 45, 46],
[47, 48, 49, 50],
[51, 52, 53, 54]]
elif self.gtype == 'GEOS-5-REDUCED':
# !----------------------------------------------------
# ! GEOS-5/MERRA: Lump 72 levels into 47 levels,
# ! starting above L=36. Lump levels in groups of 2,
# ! then 4. (cf. Bob Yantosca)
# !----------------------------------------------------
#
# ! Lump 2 levels together at a time
lump_groups = [[0, ], [1, ], [2, ], [3, ], [4, ],
[5, ], [6, ], [7, ], [8, ], [9, ],
[10, ], [11, ], [12, ], [13, ], [14, ],
[15, ], [16, ], [17, ], [18, ], [19, ],
[20, ], [21, ], [22, ], [23, ], [24, ],
[25, ], [26, ], [27, ], [28, ], [29, ],
[30, ], [31, ], [32, ], [33, ], [34, ],
[35, ]] + \
[[36, 37], [38, 39],
[40, 41], [42, 43]] + \
[[44, 45, 46, 47], [48, 49, 50, 51],
[52, 53, 54, 55], [56, 57, 58, 59],
[60, 61, 62, 63], [64, 65, 66, 67],
[68, 69, 70, 71]]
else:
raise ValueError('Cannot reduce %' % self.gtype)
assert(len(lump_groups) == nlay)
for li, lump_group in enumerate(lump_groups):
if (len(lump_group) == 1 or
dims[1] == 'layer_stag' or key == 'PLE'):
thisdata[:, li] = thisdatain[:, lump_group[0]]
elif dims[1] == 'layer':
# assumes lumping only happens above pure eta
# true for (GEOS4 and GEOS5)
thisdata[:, li] = lump(
thisdatain, self.Ap_NATIVE, lump_group)
else:
raise ValueError('huh?')
else:
if dims[1] == 'layer_stag':
thisdata[:, li + 1] = thisdatain[:, lump_group[-1]]
else:
thisdata = thisdatain
return PseudoNetCDFVariable(self, key, 'f', dims, values=thisdata,
units=unit, long_name=key.ljust(16))
def __variables(self, k):
return PseudoNetCDFVariable(self, k, 'f', ('TSTEP',),
values=self.__memmap__[k],
var_desc=k.ljust(16),
long_name=k.ljust(16))