mirror of https://github.com/ecmwf/eccodes.git
114 lines
4.2 KiB
Fortran
114 lines
4.2 KiB
Fortran
! (C) Copyright 2005- 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_attributes
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!
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! Description: how to read attributes of keys in BUFR messages.
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!
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!
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program bufr_attributes
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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 :: count=0
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integer(kind=4) :: iVal,conf
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real(kind=8) :: t2m
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character(len=32) :: units, confUnits
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call codes_open_file(ifile,'../../data/bufr/syno_multi.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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! ----------------------------------------------------------------
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! We will read the value and all the attributes available for
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! the 2m temperature.
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! ----------------------------------------------------------------
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! Get the element's value as as real
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call codes_get(ibufr,'airTemperatureAt2M',t2m);
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write(*,*) ' airTemperatureAt2M:',t2m
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! Get the element's code (see BUFR code table B)
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call codes_get(ibufr,'airTemperatureAt2M->code',iVal);
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write(*,*) ' airTemperatureAt2M->code:',iVal
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! Get the element's units (see BUFR code table B)
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call codes_get(ibufr,'airTemperatureAt2M->units',units)
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write(*,*) ' airTemperatureAt2M->units:',units
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! Get the element's scale (see BUFR code table B)
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call codes_get(ibufr,'airTemperatureAt2M->scale',iVal);
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write(*,*) ' airTemperatureAt2M->code:',iVal
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! Get the element's reference (see BUFR code table B)
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call codes_get(ibufr,'airTemperatureAt2M->reference',iVal);
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write(*,*) ' airTemperatureAt2M->reference:',iVal
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! Get the element's width (see BUFR code table B)
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call codes_get(ibufr,'airTemperatureAt2M->width',iVal);
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write(*,*) ' airTemperatureAt2M->width:',iVal
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! -------------------------------------------------------------------
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! The 2m temperature data element in this message has an associated
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! field: percentConfidence. Its value and attributes can be accessed
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! in a similar manner as was shown above for 2m temperature.
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! -------------------------------------------------------------------
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! Get the element's value as as real
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call codes_get(ibufr,'airTemperatureAt2M->percentConfidence',conf);
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write(*,*) ' airTemperatureAt2M->percentConfidence:', conf
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! Get the element's code (see BUFR code table B)
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call codes_get(ibufr,'airTemperatureAt2M->percentConfidence->code',iVal);
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write(*,*) ' airTemperatureAt2M->percentConfidence->code:',iVal
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! Get the element's units (see BUFR code table B)
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call codes_get(ibufr,'airTemperatureAt2M->percentConfidence->units',confUnits)
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write(*,*) ' airTemperatureAt2M->percentConfidence->units:',confUnits
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! Get the element's scale (see BUFR code table B)
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call codes_get(ibufr,'airTemperatureAt2M->percentConfidence->scale',iVal);
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write(*,*) ' airTemperatureAt2M->percentConfidence->code:',iVal
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! Get the element's reference (see BUFR code table B)
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call codes_get(ibufr,'airTemperatureAt2M->percentConfidence->reference',iVal);
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write(*,*) ' airTemperatureAt2M->percentConfidence->reference:',iVal
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! Get the element's width (see BUFR code table B)
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call codes_get(ibufr,'airTemperatureAt2M->percentConfidence->width',iVal);
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write(*,*) ' airTemperatureAt2M->percentConfidence->width:',iVal
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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_attributes
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