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import numpy as np
from autosubmit.config.log import Log
from earthdiagnostics.diagnostic import Diagnostic
from earthdiagnostics.box import Box
from earthdiagnostics.utils import Utils
class CutSection(Diagnostic):
"""
Cuts a meridional or zonal section
:original author: Virginie Guemas <virginie.guemas@bsc.es>
:contributor: Javier Vegas-Regidor<javier.vegas@bsc.es>
:created: September 2012
:last modified: June 2016
"""
def __init__(self, data_manager, startdate, member, chunk, variable, domain, zonal, value):
Diagnostic.__init__(self, data_manager)
self.startdate = startdate
self.member = member
self.chunk = chunk
self.variable = variable
self.domain = domain
self.zonal = zonal
self.value = value
def __str__(self):
return 'Cut section Startdate: {0} Member: {1} Chunk: {2} Variable: {3}:{4}' \
'Zonal: {5} Value: {6}'.format(self.startdate, self.member, self.chunk, self.domain, self.variable,
self.zonal, self.value)
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@classmethod
def generate_jobs(cls, diags, options):
num_options = len(options) - 1
if num_options < 3:
raise Exception('You must specify the variable, coordinate and coordinate value')
if num_options > 4:
raise Exception('You must specify between 3 and 4 parameters for the interpolation diagnostic')
variable = options[1]
zonal = options[2].lower() == 'true'
value = int(options[3])
if num_options >= 4:
domain = options[4]
else:
domain = 'ocean'
job_list = list()
for startdate in diags.startdates:
for member in diags.members:
for chunk in range(1, diags.chunks + 1):
job_list.append(CutSection(diags.data_manager, startdate, member, chunk,
variable, domain, zonal, value))
return job_list
def compute(self):
nco = Utils.nco
handler = Utils.openCdf('mesh_hgr.nc')
dimi = handler.dimensions['i'].size
dimj = handler.dimensions['j'].size
dimlev = handler.dimensions['lev'].size
lon = handler.variables['lon'][:]
lat = handler.variables['lat'][:]
handler.close()
handler = Utils.openCdf('mask.nc')
mask_lev = handler.variables['tmask'][:]
mask_lev = mask_lev.astype(float)
# noinspection PyTypeChecker
np.place(mask_lev, mask_lev == 0, [1e20])
handler.close()
# Latitude / longitude of the zonal / meridional section
exactpos = self.value
if not self.zonal:
while exactpos < np.min(lon):
exactpos += 360
while exactpos > np.max(lon):
exactpos -= 360
size = dimj
else:
size = dimi
# Collect the indexes defining the section
listi = np.empty(size, dtype=int)
listj = np.empty(size, dtype=int)
for jpt in range(0, size):
if not self.zonal:
vector = lon[jpt, :]
else:
vector = lat[:, jpt]
distance = abs(vector - exactpos)
pos = np.where(distance == min(distance))
if not self.zonal:
listi[jpt] = pos[0][0]
listj[jpt] = jpt
else:
listi[jpt] = jpt
listj[jpt] = pos[0][0]
temp = self.data_manager.get_file(self.domain, self.variable, self.startdate, self.member, self.chunk)
handler = Utils.openCdf(temp)
dimtime = handler.dimensions['time'].size
var_array = handler.variables[self.variable][:]
handler.close()
var = np.empty([dimtime, dimlev, size], dtype=handler.variables[self.variable].dtype)
new_coord = np.empty(size, dtype=float)
if self.zonal:
old_coord = lon
else:
old_coord = lat
for jpt in range(0, size):
var[:, :, jpt] = np.maximum(var_array[:, :, listj[jpt], listi[jpt]],
mask_lev[:, :, listj[jpt], listi[jpt]])
new_coord[jpt] = old_coord[listj[jpt], listi[jpt]]
nco.ncks(input=temp, output=temp, options='-O -v lev,time')
handler = Utils.openCdf(temp)
if not self.zonal:
handler.createDimension('lat', size)
coord_var = handler.createVariable('lat', float, 'lat')
file_var = handler.createVariable(self.variable, float, ('time', 'lev', 'lat'))
else:
handler.createDimension('lon', size)
coord_var = handler.createVariable('lon', float, 'lon')
file_var = handler.createVariable(self.variable, float, ('time', 'lev', 'lon'))
coord_var[:] = new_coord[:]
file_var[:] = var[:]
file_var.missing_value = 1e20
handler.close()
box = Box()
if self.zonal:
box.max_lon = self.value
box.min_lon = self.value
else:
box.max_lat = self.value
box.min_lat = self.value
self.data_manager.send_file(temp, self.domain, self.variable, self.startdate, self.member, self.chunk,
box=box)
Log.info('Finished cut section for startdate {0}, member {1}, chunk {2}',
self.startdate, self.member, self.chunk)