Missing values
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