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outputNetcdf.py
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outputNetcdf.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
import os
import sys
import datetime
import time
import re
import subprocess
import netCDF4 as nc
import numpy as np
import pcraster as pcr
import virtualOS as vos
class OutputNetcdf():
def __init__(self,cloneMapFileName,resetClone = None, attributeDictionary = None):
# cloneMap
if resetClone != None: pcr.setclone(cloneMapFileName)
cloneMap = pcr.boolean(pcr.readmap(cloneMapFileName))
cloneMap = pcr.boolean(pcr.scalar(1.0))
# latitudes and longitudes
self.latitudes = np.unique(pcr.pcr2numpy(pcr.ycoordinate(cloneMap), vos.MV))[::-1]
self.longitudes = np.unique(pcr.pcr2numpy(pcr.xcoordinate(cloneMap), vos.MV))
# reset clone (if necessary)
if resetClone != None: pcr.setclone(resetClone)
# netcdf format:
self.format = 'NETCDF3_CLASSIC'
self.attributeDictionary = {}
if attributeDictionary == None:
self.attributeDictionary['institution'] = "None"
self.attributeDictionary['title' ] = "None"
self.attributeDictionary['source' ] = "None"
self.attributeDictionary['history' ] = "None"
self.attributeDictionary['references' ] = "None"
self.attributeDictionary['description'] = "None"
self.attributeDictionary['comment' ] = "None"
else:
self.attributeDictionary = attributeDictionary
def changeAtrribute(self,ncFileName,attributeDictionary):
rootgrp= nc.Dataset(ncFileName,'a',format= self.format)
for k, v in attributeDictionary.items():
setattr(rootgrp,k,v)
rootgrp.sync()
rootgrp.close()
def createNetCDF(self,ncFileName,varName,varUnits):
rootgrp= nc.Dataset(ncFileName,'w',format= self.format)
#-create dimensions - time is unlimited, others are fixed
rootgrp.createDimension('time',None)
rootgrp.createDimension('lat',len(self.latitudes))
rootgrp.createDimension('lon',len(self.longitudes))
date_time= rootgrp.createVariable('time','f4',('time',))
date_time.standard_name= 'time'
date_time.long_name= 'Days since 1901-01-01'
date_time.units= 'Days since 1901-01-01'
date_time.calendar= 'standard'
lat= rootgrp.createVariable('lat','f4',('lat',))
lat.long_name= 'latitude'
lat.units= 'degrees_north'
lat.standard_name = 'latitude'
lon= rootgrp.createVariable('lon','f4',('lon',))
lon.standard_name= 'longitude'
lon.long_name= 'longitude'
lon.units= 'degrees_east'
lat[:]= self.latitudes
lon[:]= self.longitudes
shortVarName = varName
var= rootgrp.createVariable(shortVarName,'f4',('time','lat','lon',) ,fill_value=vos.MV,zlib=False)
var.standard_name= varName
var.long_name= varName
var.units= varUnits
attributeDictionary = self.attributeDictionary
for k, v in attributeDictionary.items(): setattr(rootgrp,k,v)
rootgrp.sync()
rootgrp.close()
def addNewVariable(self,ncFileName,varName,varUnits):
#~ print ncFileName
rootgrp= nc.Dataset(ncFileName,'a',format= self.format)
shortVarName = varName
var= rootgrp.createVariable(shortVarName,'f4',('time','lat','lon',) ,fill_value=vos.MV,zlib=False)
var.standard_name= varName
var.long_name= varName
var.units= varUnits
rootgrp.sync()
rootgrp.close()
def data2NetCDF(self,ncFile,varName,varField,timeStamp,posCnt = None):
#-write data to netCDF
rootgrp= nc.Dataset(ncFile,'a')
shortVarName = varName
date_time = rootgrp.variables['time']
if posCnt == None: posCnt = len(date_time)
date_time[posCnt]= nc.date2num(timeStamp,date_time.units,date_time.calendar)
rootgrp.variables[shortVarName][posCnt,:,:]= (varField)
rootgrp.sync()
rootgrp.close()
def dataList2NetCDF(self,ncFile,varNameList,varFieldList,timeStamp,posCnt = None):
#-write data to netCDF
rootgrp= nc.Dataset(ncFile,'a')
date_time = rootgrp.variables['time']
if posCnt == None: posCnt = len(date_time)
for varName in varNameList:
shortVarName = varName
varField = varFieldList[varName]
date_time[posCnt]= nc.date2num(timeStamp,date_time.units,date_time.calendar)
rootgrp.variables[shortVarName][posCnt,:,:]= varField
rootgrp.sync()
rootgrp.close()