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! (C) Copyright 2005- 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.
!
!
! FORTRAN 90 Implementation: bufr_attributes
!
! Description: how to read attributes of keys in BUFR messages.
!
!
program bufr_attributes
use eccodes
implicit none
integer :: ifile
integer :: iret
integer :: ibufr
integer :: count=0
integer(kind=4) :: iVal,conf
real(kind=8) :: t2m
character(len=32) :: units, confUnits
call codes_open_file(ifile,'../../data/bufr/syno_multi.bufr','r')
! the first bufr message is loaded from file
! ibufr is the bufr id to be used in subsequent calls
call codes_bufr_new_from_file(ifile,ibufr,iret)
do while (iret/=CODES_END_OF_FILE)
! Get and print some keys form the BUFR header
write(*,*) 'message: ',count
! We need to instruct ecCodes to expand all the descriptors
! i.e. unpack the data values
call codes_set(ibufr,"unpack",1);
! ----------------------------------------------------------------
! We will read the value and all the attributes available for
! the 2m temperature.
! ----------------------------------------------------------------
! Get the element's value as as real
call codes_get(ibufr,'airTemperatureAt2M',t2m);
write(*,*) ' airTemperatureAt2M:',t2m
! Get the element's code (see BUFR code table B)
call codes_get(ibufr,'airTemperatureAt2M->code',iVal);
write(*,*) ' airTemperatureAt2M->code:',iVal
! Get the element's units (see BUFR code table B)
call codes_get(ibufr,'airTemperatureAt2M->units',units)
write(*,*) ' airTemperatureAt2M->units:',units
! Get the element's scale (see BUFR code table B)
call codes_get(ibufr,'airTemperatureAt2M->scale',iVal);
write(*,*) ' airTemperatureAt2M->code:',iVal
! Get the element's reference (see BUFR code table B)
call codes_get(ibufr,'airTemperatureAt2M->reference',iVal);
write(*,*) ' airTemperatureAt2M->reference:',iVal
! Get the element's width (see BUFR code table B)
call codes_get(ibufr,'airTemperatureAt2M->width',iVal);
write(*,*) ' airTemperatureAt2M->width:',iVal
! -------------------------------------------------------------------
! The 2m temperature data element in this message has an associated
! field: percentConfidence. Its value and attributes can be accessed
! in a similar manner as was shown above for 2m temperature.
! -------------------------------------------------------------------
! Get the element's value as as real
call codes_get(ibufr,'airTemperatureAt2M->percentConfidence',conf);
write(*,*) ' airTemperatureAt2M->percentConfidence:', conf
! Get the element's code (see BUFR code table B)
call codes_get(ibufr,'airTemperatureAt2M->percentConfidence->code',iVal);
write(*,*) ' airTemperatureAt2M->percentConfidence->code:',iVal
! Get the element's units (see BUFR code table B)
call codes_get(ibufr,'airTemperatureAt2M->percentConfidence->units',confUnits)
write(*,*) ' airTemperatureAt2M->percentConfidence->units:',confUnits
! Get the element's scale (see BUFR code table B)
call codes_get(ibufr,'airTemperatureAt2M->percentConfidence->scale',iVal);
write(*,*) ' airTemperatureAt2M->percentConfidence->code:',iVal
! Get the element's reference (see BUFR code table B)
call codes_get(ibufr,'airTemperatureAt2M->percentConfidence->reference',iVal);
write(*,*) ' airTemperatureAt2M->percentConfidence->reference:',iVal
! Get the element's width (see BUFR code table B)
call codes_get(ibufr,'airTemperatureAt2M->percentConfidence->width',iVal);
write(*,*) ' airTemperatureAt2M->percentConfidence->width:',iVal
! Release the bufr message
call codes_release(ibufr)
! Load the next bufr message
call codes_bufr_new_from_file(ifile,ibufr,iret)
count=count+1
end do
! Close file
call codes_close_file(ifile)
end program bufr_attributes
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