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Introduction
The intention behind this page is not to advertise the new features of Metview 4 (see Version 4 Complete Change History for this), but to help users migrate existing plots and macros from Metview 3 to Metview 4. In general, icons and macros which do no plotting should require very little, if any, modification. Many icons and macros used to produce plots will likewise require little or no modification, but some will need to be updated. These changes, plus some other points of interest are briefly described on this page.
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Even within Metview 3, the GRIB_API-based inline Fortran/C routines (the 'MFI' routines) were available and preferred over the 'legacy' GRIBEX-based routines. Recent versions of Metview 4 have used newer versions of emoslib, which do not have GRIBEX support. It is thus now necessary to use the 'MFI' routines to pass parameters between Macro and inline C/Fortran. See Documentation Articles and find the PDF link at the top of the page for details on these interface routines.
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