ExGrib.Grib2.Section3.SpectralDataRepresentationMode (ex_grib v0.0.1) View Source
Table 3.7
Determines the mode of spectral data information, this will be 1 normally.
The complex numbers Fnm (See Code Table 3.6) are stored for M>=0 as pairs of real numbers Re(Fnm), lm(Fnm) ordered with n increasing from m to N(m), first for m=0 and then for m=1, 2, ... M (see note below).
Notes:
- Values of N(m) for common truncation cases are as follows:
Triangular: M = J = K, N(m) = J Rhomboidal: K = J + M, N(m) = J + m Trapezoidal: K = J, K > M, N(m) = J
https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table3-7.shtml
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Specs
mode() :: integer()
Specs
t() :: :set | :reserved | :missing