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In the simplest case, the spectra have all the same resolution,
reference channel and reference value: they are aligned and the
channel mode (SET ALIGN CHANNEL) can be used. The intensity
and weight
of the output sum
are derived from a
simple weighted mean of the input spectra:
On return,
weight array can vary across the abscissae axis, e.g. in COMPOSITE mode the overlapping channels typically have a
double weight compared to the side channels.
Gildas manager
2011-09-07