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The outline of this page is :
1) Problem description
2) Program flow
3) Test data file and caveats
Data date of predefined data set is: 2019-10-15 till 2019-10-17
1) Description
The WIGOS id contains four parts such as 0-2XXXX-0-YYYYY,
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old stations and their WIGOS ids.
2)Program description
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''' # Copyright 2005-2018 ECMWF. # This software is licensed under the terms of the Apache Licence Version 2.0 # which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. # In applying this licence, ECMWF does not waive the privileges and immunities # granted to it by virtue of its status as an intergovernmental organisation # nor does it submit to any jurisdiction This is a test program to encode Wigos Synop requires 1) ecCodes version 2.14.1 or above (available at https://confluence.ecmwf.int/display/ECC/Releases) 2) python3.6.8-01 To run the program ./addWigosProg.py -i synop_multi_subset.bufr -o out_synop_multisubset.bufr -w WIGOS_TEMP_IDENT.csv Uses BUFR version 4 template and adds the WIGOS Identifier 301150 REQUIRES TablesVersionNumber above 28 Author : Roberto Ribas Garcia ECMWF 28/10/2019 Modifications performance improvement ( uses skipExtraKeyAttributes) and codes_clone 04/11/2019 changes for SYNOP and TEMP messages 05/11/2019 ''' from eccodes import * import argparse import json import re import pandas as pd import numpy as np import logging import requests import os def read_cmd_line(): p=argparse.ArgumentParser() p.add_argument("-i","--input",help="input bufr file") p.add_argument("-o","--output",help="output bufr file with wigos") p.add_argument("-m","--mode",choices=["web","json"],help=" wigos source [ json file or web ]") p.add_argument("-l","--logfile",help="log file ") args=p.parse_args() return args def read_oscar_json(jsonFile): with open(jsonFile,"r") as f: jtext=json.load(f) return jtext def read_oscar_web(oscarURL="https://oscar.wmo.int/surface/rest/api/search/station?"): r=requests.get(oscarURL) jtext=json.loads(r.text fixed codes_clone issue 05/11/2019 ''' from eccodes import * import argparse import json import re import pandas as pd import numpy as np import logging import requests import os def read_cmd_line(): p=argparse.ArgumentParser() p.add_argument("-i","--input",help="input bufr file") p.add_argument("-o","--output",help="output bufr file with wigos") p.add_argument("-m","--mode",choices=["web","json"],help=" wigos source [ json file or web ]") p.add_argument("-l","--logfile",help="log file ") args=p.parse_args() return jtextargs def parseread_oscar_json_into_dataframe(jtextjsonFile): ''' parses the JSON from the file wigosJsonFile filters the stations by wigosStationIdentifiers key in the dictionarieswith open(jsonFile,"r") as f: jtext=json.load(f) ''' wigosStations=[] nowigosStations=[] for d in jtext:return jtext def read_oscar_web(oscarURL="https://oscar.wmo.int/surface/rest/api/search/station?"): r=requests.get(oscarURL) jtext=json.loads(r.text) return jtext if "wigosStationIdentifiers" in d.keys( def parse_json_into_dataframe(jtext): ''' parses the JSON wigosStations.append(d)from the file wigosJsonFile filters the stations by else: wigosStationIdentifiers key in the dictionaries ''' nowigosStations.append(d) wigosStations=[] '''nowigosStations=[] usesfor onlyd the wigos 0-20XXX-0-YYYYY (surface)in jtext: ''' p=re.compile("0-20\d{3}-0-\d{5}") if "wigosStationIdentifiers" in d.keys(): fwigosStations=[] for d in wigosStations:.append(d) wigosInfo=d["wigosStationIdentifiers"]else: for e in wigosInfo: nowigosStations.append(d) ''' if e["primary"]==True: uses only the wigos 0-20XXX-0-YYYYY (surface) ''' p=re.compile("0-20\d{3}-0-\d{5}") wigosIdfwigosStations=e["wigosStationIdentifier"] for d in wigosStations: wigosInfo=d["wigosStationIdentifiers"] if p.match(wigosId): for e in wigosInfo: wigosParts=wigosId.split("-")if e["primary"]==True: dwigosId=e["wigosIdentifierSerieswigosStationIdentifier"]=wigosParts[0] if p.match(wigosId): d["wigosIssuerOfIdentifier"]=wigosParts[1] wigosParts=wigosId.split("-") d["wigosIssueNumberwigosIdentifierSeries"]=wigosParts[20] d["wigosLocalIdentifierCharacterwigosIssuerOfIdentifier"]=wigosParts[31] d["oldIDwigosIssueNumber"]=wigosParts[3][-5:2] fwigosStations.append(d)d["wigosLocalIdentifierCharacter"]=wigosParts[3] d["oldID"]=wigosParts[3][-5:] fwigosStations.append(d) df=pd.DataFrame(fwigosStations) df=df[["longitude","latitude","name","wigosStationIdentifiers","wigosIdentifierSeries","wigosIssuerOfIdentifier","wigosIssueNumber", "wigosLocalIdentifierCharacter","oldID"]] return df def get_ident(bid): ''' gets the ident of the message by combining blockNumber and stationNumber keys from the input BUFR file the ident may be single valued or multivalued ( only single valued are considered further) ''' ident=None if ( codes_is_defined(bid, "blockNumber") and codes_is_defined(bid,"stationNumber") ): blockNumber=codes_get_array(bid,"blockNumber") stationNumber=codes_get_array(bid,"stationNumber") if len(blockNumber)==1 and len(stationNumber)==1: ident="{0:02d}{1:03d}".format(int(blockNumber),int(stationNumber)) elif len(blockNumber)==1 and len(stationNumber)!=1: blockNumber=np.repeat(blockNumber,len(stationNumber)) ident=[str("{0:02d}{1:03d}".format(b,s)) for b,s in zip(blockNumber,stationNumber) if b!=CODES_MISSING_LONG and s!=CODES_MISSING_LONG] elif len(blockNumber)!=1 and len(stationNumber)!=1: ident=[str("{0:02d}{1:03d}".format(b,s)) for b,s in zip(blockNumber,stationNumber) if b!=CODES_MISSING_LONG and s!=CODES_MISSING_LONG] ''' returnhere identonly the first element of def add_wigos_info(ident,bid,wdf,obid): ''' add the wigos information to the message ident pointed by bid the wdf is the whole wigos dataframe and obid is the output bid the list is returned to the main program this avoids lists being used in the dataframe query and breaking the logic ''' if codes_is_defined(bid, "shortDelayedDescriptorReplicationFactor"isinstance(ident,list): shortDelayed=codes_get_array(bid,"shortDelayedDescriptorReplicationFactor") else:ident=ident[0] return shortDelayed=None ident if def codesadd_iswigos_definedinfo(ident,bid, "delayedDescriptorReplicationFactor"odf,obid): ''' delayedDesc=codes_get_array(bid,"delayedDescriptorReplicationFactor") else: delayedDesc=None add the wigos information to the message ident pointed by bid the odf contains the WIGOS information for ident ifobid codes_is_defined(bid, "extendedDelayedDescriptorReplicationFactoris the output handle ''' if codes_is_defined(bid, "shortDelayedDescriptorReplicationFactor"): extDelayedDescshortDelayed=codes_get_array(bid,"extendedDelayedDescriptorReplicationFactorshortDelayedDescriptorReplicationFactor") else: extDelayedDescshortDelayed=None nsubsets=codes_getif codes_is_defined(bid, "numberOfSubsetsdelayedDescriptorReplicationFactor"): compressed delayedDesc=codes_get_array(bid,"compressedDatadelayedDescriptorReplicationFactor") else: masterTablesVersionNumber=codes_get(bid,"masterTablesVersionNumber") ifdelayedDesc=None masterTablesVersionNumber<28: masterTablesVersionNumber=28 if codes_is_defined(bid, "extendedDelayedDescriptorReplicationFactor"): unexpandedDescriptorsextDelayedDesc=codes_get_array(bid,"unexpandedDescriptorsextendedDelayedDescriptorReplicationFactor") outUD=list(unexpandedDescriptors) else: outUD.insert(0,301150) extDelayedDesc=None '''nsubsets=codes_get(bid,"numberOfSubsets") only treat the uncompressed messages with 1 subset compressed=codes_get(bid,"compressedData") masterTablesVersionNumber=codes_get(bid,"masterTablesVersionNumber") if masterTablesVersionNumber<28: for future add treatment of compressed messages withmasterTablesVersionNumber=28 more than 1 subset ''' unexpandedDescriptors=codes_get_array(bid,"unexpandedDescriptors") outUD=list(unexpandedDescriptors) if compressed==0 and nsubsets==1: outUD.insert(0,301150) ''' only treat the uncompressed IMPORTANT,messages takeswith into1 accountsubset delayed replications ( all possiblefor cases)future toadd accommodate treatment of compressed messages with more than SYNOP + TEMP messages 1 subset ''' if shortDelayed is not Nonecompressed==0 and nsubsets==1: ''' codes_set_array(obid,"inputShortDelayedDescriptorReplicationFactor",shortDelayed) IMPORTANT, takes into account ifdelayed delayedDescreplications is( not None: all possible cases) to accommodate SYNOP + TEMP messages codes_set_array(obid,"inputDelayedDescriptorReplicationFactor",delayedDesc)''' if extDelayedDescshortDelayed is not None: codes_set_array(obid,"inputExtendedDelayedDescriptorReplicationFactorinputShortDelayedDescriptorReplicationFactor",extDelayedDescshortDelayed) if delayedDesc is not None: codes_set_array(obid,"masterTablesVersionNumberinputDelayedDescriptorReplicationFactor",masterTablesVersionNumberdelayedDesc) codes_set(obid,"numberOfSubsets",nsubsets)if extDelayedDesc is not None: odf=wdf.query("oldID=='{0}'".format(ident)) codes_set_array(obid,"inputExtendedDelayedDescriptorReplicationFactor",extDelayedDesc) if not odf.empty: codes_set_array(obid, "unexpandedDescriptorsmasterTablesVersionNumber",outUDmasterTablesVersionNumber) wis=odf["wigosIdentifierSeries"].values codes_set(obid,"numberOfSubsets",nsubsets) if len(wis)!=1: wis=wis[0] codes_set_array(obid, "wigosIdentifierSeriesunexpandedDescriptors",int(wis)outUD) widwis=odf["wigosIssuerOfIdentifierwigosIdentifierSeries"].values if len(widwis)!=1: wid=widwis=wis[0] codes_set(obid,"wigosIssuerOfIdentifierwigosIdentifierSeries",int(widwis)) winwid=odf["wigosIssueNumberwigosIssuerOfIdentifier"].values if len(winwid)!=1: win=winwid=wid[0] codes_set(obid,"wigosIssueNumberwigosIssuerOfIdentifier",int(winwid)) wlidwin=odf["wigosLocalIdentifierCharacterwigosIssueNumber"].values wlid="{0:5}".format(wlid[0])if len(win)!=1: logging.info(" wlid here {0}".format(wlid)) win=win[0] codes_set(obid,"wigosLocalIdentifierCharacterwigosIssueNumber",strint(wlidwin)) codes_bufr_copy_data(bid,obid) else: wlid=odf["wigosLocalIdentifierCharacter"].values logging.info(" wigos {0} is empty for ident {1wlid="{0:5}".format(ident,odf["wigosLocalIdentifierCharacter"].values)) else:wlid[0]) logging.info(" skippingwlid compressedhere message id {0} with {1} subsets ".format(ident,nsubsetswlid)) codes_set(obid,"wigosLocalIdentifierCharacter",str(wlid)) return codes_bufr_copy_data(bid,obid) else: def main(): print("ecCodes version {0}".format( logging.info(" skipping compressed message id {0} with {1} subsets ".format(ident,nsubsets)) return def main(): print("ecCodes version {0}".format(codes_get_api_version())) args=read_cmd_line() logfile=args.logfile logging.basicConfig(filename=logfile,level=logging.INFO,filemode="w") infile=args.input outfile=args.output mode=args.mode if mode=="web": jtext=read_oscar_web() cdirectory=os.getcwd() oscarFile=os.path.join(cdirectory,"oscar.json") with open(oscarFile,"w") as f: json.dump(jtext,f) else: cdirectory=os.getcwd() oscarFile=os.path.join(cdirectory,"oscar.json") with open(oscarFile,"r") as f: jtext=json.load(f) wigosDf=parse_json_into_dataframe(jtext) f=open(infile,"rb") nmsg=codes_count_in_file(f) fout=open(outfile,"wb") for i in range(0,nmsg): bid=codes_bufr_new_from_file(f) obid=codes_clone(bid) codes_set(bid, 'skipExtraKeyAttributes', 1) codes_set(bid,"unpack",1) ident=get_ident(bid) if ident: logging.info (" \t message {0} ident {1} ".format(i+1,ident)) add_wigos_info(ident,bid, wigosDf,obid) odf=wigosDf.query("oldID=='{0}'".format(ident)) codes_write(obid,fout) else: if not odf.empty: logging.info ("message {0} rejected ".format(i+1)) codesadd_wigos_release(info(ident,bid, odf,obid) codes_releasewrite(bidobid,fout) f.close() else: print logging.info(" finished") if __name__ == '__main__': main() wigos {0} is empty for ident {1}".format(ident,odf["wigosLocalIdentifierCharacter"].values)) else: logging.info ("message {0} rejected ".format(i+1)) codes_release(obid) codes_release(bid) f.close() print (" finished") if __name__ == '__main__': main() |
The program can be called with the following arguments
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that are uncompressed ( compressed =0) and single subset ( numberOfSubsets=1) if their ident matches the ones in wigosDf.
5) a new function ( copy_header) was added to avoid changing the header of the message. Now, it copies the keys from bid to obid except typicalDate which is read onlyIf get_ident function founds many idents on a message only returns the first one.
During program execution a log file is generated containing information about the processing.
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- Only uncompressed messages (compressed =0) and single subset (numberOfSubsets=1) are considered
- The Oscar information retrieved from the web server has to be cleared for this program to work. This is the goal of the function parse_json_into_dataframe that uses regular expressions to filter out the WIGOS data.
- When setting the WIGOS information It is important to preserve the data types , for example "wigosLocalIdentifierCharacter" is a character string.
- The masterTablesVersionNumber must be above 28 otherwise no WIGOS ids can be added. This is done in the add_wigos_info function that updates the table version number key for each message processed.
Results
- be above 28 otherwise no WIGOS ids can be added. This is done in the add_wigos_info function that updates the table version number key for each message processed.
Results
The output file contains 19543 SYNOP messages obtained from running the program on a input BUFR file containing raw SYNOP data received through GTS
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This file contains 7 TEMP messages obtained running the program on a BUFR file containing raw TEMP messages.
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