Step-by-step guide
Each element in the data section of a BUFR can be missing.
ecCodes provides a simple way for the user to check if the value of an element is missing by comparing with two constants:
CODES_MISSING_LONG
CODES_MISSING_DOUBLE
- The constants are available in Python, Fortran 90 and C and the user needs to compare with the appropriate constant depending on the type of the variable used. This is an example of Fortran 90 code:
!declare backscatter as double precision
real(kind=8), dimension(:), allocatable :: backscatter
!get the values
call codes_get(ibufr,'/beamIdentifier=2/backscatter',backscatter);
do i=1,size(backscatter)
!compare with double precision missing
if (backscatter(i)/=CODES_MISSING_DOUBLE) then
!process non missing values
else
!process missing values
endif
end do
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