mirror of https://github.com/ecmwf/eccodes.git
81 lines
2.3 KiB
Fortran
81 lines
2.3 KiB
Fortran
!
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!Copyright 2005-2015 ECMWF.
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!
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! This software is licensed under the terms of the Apache Licence Version 2.0
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!which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
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!
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! In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
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! virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
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!
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!
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! FORTRAN 90 implementation: bufr_subset
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!
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! Description: how to read data values from a given subset of a BUFR message.
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!
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!
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program bufr_subset
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use eccodes
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implicit none
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integer :: ifile
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integer :: iret
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integer :: ibufr
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integer :: i, count=0
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integer(kind=4) :: numberOfSubsets
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integer(kind=4) :: blockNumber,stationNumber
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character(100) :: key
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!real(kind=8) :: t2m
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call codes_open_file(ifile,'../../data/bufr/synop_multi_subset.bufr','r')
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! the first bufr message is loaded from file
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! ibufr is the bufr id to be used in subsequent calls
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call codes_bufr_new_from_file(ifile,ibufr,iret)
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do while (iret/=CODES_END_OF_FILE)
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! get and print some keys form the BUFR header
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write(*,*) 'message: ',count
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! we need to instruct ecCodes to expand all the descriptors
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! i.e. unpack the data values
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call codes_set(ibufr,'unpack',1);
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! find out the number of subsets
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call codes_get(ibufr,'numberOfSubsets',numberOfSubsets)
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write(*,*) ' numberOfSubsets:',numberOfSubsets
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! loop over the subsets
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do i=1,numberOfSubsets
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100 format('/subsetNumber=',I5.5,'/blockNumber')
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write(key,100) I
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write(*,*) key
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write(*,*) ' subsetNumber:',i
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! read and print some data values
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call codes_get(ibufr,key,blockNumber);
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write(*,*) ' blockNumber:',blockNumber
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write(key,*) '/subsetNumber=',I,'/stationNumber'
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call codes_get(ibufr,'stationNumber',stationNumber);
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write(*,*) ' stationNumber:',stationNumber
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end do
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! release the bufr message
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call codes_release(ibufr)
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! load the next bufr message
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call codes_bufr_new_from_file(ifile,ibufr,iret)
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count=count+1
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end do
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! close file
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call codes_close_file(ifile)
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end program bufr_subset
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