grib_filter

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Rules syntax grib_filter • print “some text”; # this is a comment • print “some text [key]”; - Print to the standard output. - Retrieve the value of the keys in squared brackets. - If a key is not found in the message then the value of [key] will be displayed as “undef”. - [key] -> native type - [key:l] -> integer (the “el” is for “long”!) - [key:s] -> string - [key:d] -> double - [key!c%F’S’] -> arrays: c->columns F->format (C style) S->separator Slide 6 • print (“filename”) “some text [key]”; COM GRIB API, ECMWF 26-Feb, 01-Mar 2013 ©ECMWF Slide 6
Example 1 grib_filter # A simple print print “ed = [edition], centre is [centre:s] = [centre:l]”; > grib_filter rule.filter x.grib1 ed = 1 centre is ecmf = 98 Slide 7 COM GRIB API, ECMWF 26-Feb, 01-Mar 2013 ©ECMWF Slide 7
Page 1 and 2: grib_filter GRIB API: grib_filter X
Page 3 and 4: Introduction grib_filter • GRIB A
Page 5: Usage grib_filter grib_filter rules
Page 9 and 10: Example 3 grib_filter # three colum
Page 11 and 12: Example 4 grib_filter # Creating mu
Page 13 and 14: Example 5 grib_filter append; > gri
Page 15 and 16: Example 6 grib_filter set edition =
Page 17 and 18: Rules syntax grib_filter • transi
Page 19 and 20: Practicals grib_filter To get the m
Page 21 and 22: Example 9 grib_filter File rule.fil
Page 23 and 24: Example 10 grib_filter print "proce
Page 25 and 26: Practicals grib_filter 1. Change th
Page 27: grib_filter Questions ? Slide 27 CO

grib_filter

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