def CreateNETCDFsphere( fixedDatetimeString, fixedAltitude, LatitudeStep, LongitudeStep ):
# if no date is provided then return an empty string
if fixedDatetimeString == "":
return "" # <<<<
# convert the Time-string to Unix Timestamp
aTimeString = fixedDatetimeString[:-6] + " " + "+0000" # indicate explicity that this is UTC time
TimeObj = datetime.strptime( aTimeString, "%b %d %Y %H:%M:%S.%f %z" )
FixedTimestamp = float( datetime.timestamp(TimeObj) ) * 1000 # timestamp in milliseconds
# copy the standard surface file to a temporary location, where we will process it
shutil.copyfile( DaedalusGlobals.Temporary_Files_Path+"SurfaceTemplate.nc", DaedalusGlobals.Temporary_Files_Path+"Surface.nc" )
# open file
CDFroot = Dataset( DaedalusGlobals.Temporary_Files_Path+"Surface.nc", "a")
# update general attributes
CDFroot.Type = "surface"
CDFroot.Calculated = "no" # reset state
CDFroot.ResetTime = str(datetime.now()) # log
# fill with pre-fabricated data for all Latitude-Lonitude pairs according to their respective steps
n = 0;
for i in np.arange(87.5, -92.5, -5.0):
for j in np.arange(-180.0, 180.0, 5.0):
CDFroot.variables["lat"][n] = i + 0.00000001*n # add a tiny offset, so that Panoply can plot the data as trajectory
CDFroot.variables["lon"][n] = j + 0.00000001*n # add a tiny offset, so that Panoply can plot the data as trajectory
#print( round(float(CDFroot.variables["lat"][n]),2), " ", round(float(CDFroot.variables["lon"][n]),2) )
CDFroot.variables["time"][n] = FixedTimestamp + n # add a tiny offset, so that Panoply can plot the data as trajectory
CDFroot.variables["altitude"][n] = fixedAltitude
CDFroot.variables["ALFA"][n] = np.random.random_sample() # assign random values for test purposes
n = n + 1
# close file
CDFroot.close()
return DaedalusGlobals.Temporary_Files_Path+"Surface.nc"
def ResetState_of_NETCDF_file( FullpathFilename):
CDFroot = Dataset( FullpathFilename, "a") # open file
CDFroot.Calculated = "no" # reset state
CDFroot.ResetTime = str(datetime.now()) # log
CDFroot.close() # close file
def Interpolator(model_data_file, orbit_file):
# model data file--> netcdf to read model data from
# orbit file--> netcdf to read orbit from
# save--> Logical:: if true saves interpolated values to directory
# VAR--> string array:: variables to inteprolate, must be one of the variables included in the model data
#Outputs:: Plots+ 1 csv file
if orbit_file=="":
return "" # <<<<
save=True
VAR=["NE","DEN","HE","NO","O1","O2","OP","TN","UI_ExB","VI_ExB","WI_ExB","UN","VN"]
Parallel=False
F90=False
#***************Read Model Data and Orbit Files*****************************
# Interpolation Min and Max Altitude Along Track Depending on Model and User Preference
min_alt=110 #min altitude to interpolate
max_alt=450 #max altitude to interpolate
srt=1 # daedalus sampling rate
# Copy the orbit file from the OrbitData folder to ModelsOutput folder
# TODO: if file exists just open it for append and check the Calculated attribute
orbit_path = orbit_file[ 0 : orbit_file.rfind("/")+1]
orbit_name = orbit_file[ orbit_file.rfind("/")+1 : -3]
result_filename = DaedalusGlobals.Interpolated_Files_Path + orbit_name + "_Interpolated" + ".nc"
if os.path.isfile(result_filename)==False or "Surface" in result_filename:
copyfile(orbit_file, result_filename)
# Get data from Orbit
resultCDF=Dataset(result_filename, "a")
if resultCDF.Calculated == "yes":
print ("Skipping calculation because values are valid for" , result_filename)
return result_filename # <<<<
daed_lat_temp = resultCDF.variables['lat'][:]
daed_lon_temp = resultCDF.variables['lon'][:]
daed_alt_temp = resultCDF.variables['altitude'][:]
daed_time_temp = resultCDF.variables['time'][:]
# Get data from Model
TIEGCM=Dataset(model_data_file)
grid_lat=TIEGCM.variables['lat'][:]
grid_lon=TIEGCM.variables['lon'][:]
grid_lev=TIEGCM.variables['ilev'][:]
grid_time=TIEGCM.variables['time'][:]
zg=TIEGCM.variables['ZG'][:]
#Find model's temporal resolution
model_dt=(grid_time[1]-grid_time[0])*60 #in seconds
orbit_dt=1/srt #in seconds
# Sample Orbit and Find Positions Below 450km
counter=0
for i in range(0,len(daed_alt_temp)):
if (daed_alt_temp[i] < max_alt and daed_alt_temp[i] > min_alt):
counter=counter+1
# **************************************************************************
# ***************Allocate Arrays********************************************
daed_lat=np.zeros((counter))
daed_lon=np.zeros((counter))
daed_alt=np.zeros((counter))
daed_time=np.zeros((counter),dtype=datetime)
index=[None]*counter
int_final=[None]*len(daed_alt_temp)
#Keep Data in MIN MAX Range For the Interpolation
counter=0
for i in range(0,len(daed_alt_temp)):
if (daed_alt_temp[i] < max_alt and daed_alt_temp[i] > min_alt):
daed_time[counter]=daed_time_temp[i]
daed_lat[counter]=daed_lat_temp[i]
daed_lon[counter]=daed_lon_temp[i]
daed_alt[counter]=daed_alt_temp[i]
index[counter]=i #keep indices for merging data
counter=counter+1
#Transfrom Lon to Match TIEGCM (Orbit Longitudes range from 0 to 360 deg)
for i in range (0, len(daed_alt)):
daed_lon[i]=daed_lon[i]-180
daed_lat[i]= geod_lat2geo_lat(daed_lat[i])
# **************************************************************************
# **************************************************************************
#Allocate a matrix for the interpolated values
int_data=np.zeros(((counter)))
# **************************************************************************
#======================Call Interpolation Subroutines=======================
print("Interpolation Starting...",counter*len(VAR), "Positions to Interpolate")
t1=time.time()
exports=0
for jj in range(0,len(VAR)):
# Select Variable to Interpolate
ne=TIEGCM.variables[VAR[jj]][:]
# ********************FORTRAN Subroutines***********************************
if F90 == True:
if Parallel==True:
print(VAR[jj])
interpolation_OpenMP.daed_interp(grid_lat,grid_lon,grid_lev,daed_lat,daed_lon,daed_alt,zg,model_dt,orbit_dt,ne,int_data)
else:
print(VAR[jj])
interpolation.daed_interp(grid_lat,grid_lon,grid_lev,daed_lat,daed_lon,daed_alt,zg,model_dt,orbit_dt,ne,int_data)
else:
# ********************Python Subroutines***********************************
if Parallel==True:
print(VAR[jj])
if __name__=="__main__":
pool=multiprocessing.Pool(2)
func=partial(Interpolate_Parallel,grid_lat,grid_lon,grid_lev,daed_lat,daed_lon,daed_alt,zg,model_dt,orbit_dt,ne)
i=range(len(daed_alt))
int_data=pool.map(func,i)
pool.close()
pool.join()
else:
print(VAR[jj])
int_data=Interpolate_Serial(grid_lat,grid_lon,grid_lev,daed_lat,daed_lon,daed_alt,zg,model_dt,orbit_dt,ne)
# **************************************************************************
#===============================================================================
# Merge Interpolated Values to Full Orbit Array (For printing full orbit)
for i in range(0,len(int_data)):
int_final[index[i]]=int_data[i]
# **************************************************************************
if save==True:
resultCDF.variables[VAR[jj]][:]= int_final
# **********************************************************************ยง
t2=time.time()
resultCDF.Calculated = "yes"
resultCDF.EditTime = str(datetime.now())
resultCDF.close()
print("Interpolation Finished in ",str(t2-t1),"s")
return result_filename