Я новичок в python, поэтому извините, если я сделаю какие-либо ошибки новичка. Я пытаюсь вставить свой текстовый файл в netcdf.
Я использую пакет netcdf4 и следую примеру на этом сайте: https://pyhogs.github.io/intro_netcdf4.html, и мне удалось воспроизвести пример (в примере используются случайные данные):
Проблема: Мой текстовый файл содержит: Lon, Lat, SST, и когда я пытаюсь вставить эти значения, файл netcdf создан, однако, это не правильно:
В моем коде я пытаюсь применить интерполяцию Барнса (var) или интерполяция griddata (interp). Я думаю, это то, что нужно ввести в мою переменную netcdf (возможно, я ошибаюсь).
Здесь мой код до сих пор:
import os
import numpy as np
from scipy.interpolate import griddata
import matplotlib.pyplot as plt
import numpy.ma as ma
import netCDF4 as nc4
from numpy.random import uniform, seed
from metpy.interpolate import (interpolate_to_grid, remove_nan_observations, inverse_distance_to_grid, remove_repeat_coordinates)
# Open file
arq_sst = np.loadtxt(fname = "C:\\Users\\Rodrigo\\XYZ.txt", skiprows=0, delimiter=",")
# Getting the Arrays
lonf = arq_sst[:, 0]
latf = arq_sst[:, 1]
sstf = arq_sst[:, 2]
# Atmosphere level
z = [1]
#shapping grid
x_1, y_1 = np.meshgrid(lonf, latf)
#Barnes Interpolation
var = inverse_distance_to_grid(lonf, latf, sstf, x_1, y_1, r=100000, gamma=0.25, kappa=5.052, min_neighbors=3, kind='barnes')
#Or
#Another interpolation
interp = griddata((lonf, latf), sstf, (lonf[None,:], latf[:,None]), method='nearest')
#Open netcdf to write
f = nc4.Dataset('file_created.nc','w', format='NETCDF4')
#Creating group in netcdf file
tempgrp = f.createGroup('SAT_DATA')
#Specifying dimensions
tempgrp.createDimension('lon', len(lonf))
tempgrp.createDimension('lat', len(latf))
tempgrp.createDimension('z', len(z))
tempgrp.createDimension('time', None)
#Building variables
longitude = tempgrp.createVariable('Longitude', 'f4', 'lon')
latitude = tempgrp.createVariable('Latitude', 'f4', 'lat')
levels = tempgrp.createVariable('Levels', 'i4', 'z')
sst = tempgrp.createVariable('sst', 'f4', ('time', 'lon', 'lat', 'z'))
time = tempgrp.createVariable('Time', 'i4', 'time')
#Passing data into variables
longitude[:] = lonf
latitude[:] = latf
levels[:] = z
sst[0,:,:,:] = var
#get time in days since Jan 01,01
from datetime import datetime
today = datetime.today()
time_num = today.toordinal()
time[0] = time_num
#Add global attributes
f.description = "XYZ dataset containing one group"
f.history = "Created " + today.strftime("%d/%m/%y")
#Add local attributes to variable instances
longitude.units = 'degrees east'
latitude.units = 'degrees north'
time.units = 'days since Jan 01, 0001'
sst.units = 'degrees'
levels.units = 'meters'
sst.warning = 'This data is not real!'
#Closing the dataset
f.close()
Вот мои текстовые данные (Заголовок: Долгота , широта, ССТ). Я уменьшил количество строк, чтобы поместиться здесь:
-42.1870,-22.9940,22.4844
-37.4000,-29.9700,20.2000
-37.4200,-29.9600,20.1000
-39.1800,-30.0000,20.5000
-39.2100,-30.0000,20.4000
-39.2300,-30.0000,20.4000
-39.2200,-29.9800,20.4000
-39.2300,-29.9900,20.4000
-39.2000,-29.9800,20.4000
-39.1900,-30.0000,20.5000
-39.2800,-29.9900,20.5000
-39.2700,-29.9900,20.4000
-39.3400,-29.9700,20.5000
-39.3300,-29.9600,20.4000
-39.3100,-29.9600,20.4000
-39.3600,-29.9700,20.6000
-39.3500,-29.9900,20.4000
-39.3900,-29.9900,20.4000
-38.4600,-30.0000,20.3000
-38.4900,-29.9800,20.7000
-37.4800,-29.8800,20.4000
-37.5000,-29.8600,20.3000
-37.4600,-29.8900,20.3000
-41.3800,-29.9900,20.0000
-41.4000,-29.9900,20.1000
-41.0400,-29.9300,20.1000
-41.0200,-29.9200,20.2000
-41.0600,-29.9300,20.1000
-41.1000,-29.9400,19.9000
-41.0900,-29.9600,19.9000
-41.1100,-29.9800,19.9000
-41.1100,-29.9600,20.0000
-41.1200,-29.9400,20.0000
-41.1400,-29.9400,20.0000
-41.1600,-29.9500,20.1000
-41.1700,-29.9500,20.1000
-41.1900,-29.9700,20.0000
-41.1900,-29.9500,20.1000
-40.6800,-29.9900,20.1000
-40.7400,-29.9600,20.1000
-40.7700,-29.9700,20.1000
-40.7800,-29.9700,20.1000
-40.7100,-29.9000,20.1000
-40.7600,-29.9100,20.1000
-40.7400,-29.9000,20.1000
-40.7200,-29.9000,20.2000
-40.7600,-29.9200,20.1000
-40.7500,-29.9400,20.1000
-40.7800,-29.9100,20.2000
-40.8000,-29.9100,20.2000
-40.8100,-29.9300,20.1000
-40.8200,-29.9200,20.2000
-40.7900,-29.9300,20.2000
-40.7900,-29.9500,20.1000
-40.7700,-29.9300,20.1000
-40.8400,-29.9600,20.2000
-40.8600,-29.9600,20.3000
-40.9000,-29.9100,20.1000
-40.9100,-29.9100,20.0000
-40.3900,-29.9400,20.0000
-40.3900,-29.9200,20.0000
-40.4100,-29.9200,20.0000
-40.4100,-29.9400,20.0000
-40.3800,-29.9000,20.0000
-40.3800,-29.9200,20.0000
-40.4000,-29.9000,20.1000
-40.3700,-29.9600,20.0000
-40.3600,-29.9700,20.0000
-40.3800,-29.9800,20.0000
-40.4200,-29.9000,20.0000
-40.4300,-29.9300,20.1000
-40.4500,-29.9300,20.1000
-40.4700,-29.9300,20.0000
-40.4400,-29.9100,20.0000
-40.4500,-29.9100,20.0000
-40.4700,-29.9100,20.0000
-40.5000,-29.9400,19.9000
-40.5300,-29.9200,20.1000
-40.5100,-29.9200,20.1000
-40.4900,-29.9400,19.9000
-40.4900,-29.9200,20.0000
-40.6200,-30.0000,20.2000
-40.6000,-30.0000,20.1000
-40.6800,-29.9900,20.1000
-40.4000,-29.8400,20.1000
-40.4800,-29.8700,20.1000
-40.4500,-29.8300,20.3000
-40.4600,-29.8900,20.1000
-40.4600,-29.8700,20.0000
-40.5000,-29.8800,20.3000
-40.4900,-29.9000,20.1000
-40.5100,-29.9000,20.3000
-40.5300,-29.9000,20.2000
-40.5600,-29.8500,20.3000
-40.5800,-29.8500,20.3000
-40.6300,-29.9000,19.9000
-40.7100,-29.9000,20.1000
-40.0500,-29.9600,20.3000
-40.1100,-29.9800,20.2000
-40.1100,-30.0000,20.2000
Кто-нибудь может мне помочь?