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EXTRACT
LAS\EXTRACT [X1 X2 [Unit]]
EXTRACT copies R into T, extracts a subsection of R, and save the result
in R.
Without arguments, the cursor is invoked (if available) to define the
subsection range. If the arguments X1 and X2 are present, the subsection
is defined by this range, in the given Unit (if any) or by default in
the current X axis unit (SET UNIT). X2 can be indifferently greater of
lower than X1, and Unit is a single character in the four C)hannel,
V)elocity, F)requency or I)mage.
If the range overlaps the input spectrum limits, a warning is raised and
the missing data is filled with the blanking value. Requesting a range
off the input spectrum is an error.
Only spectroscopic data with a regularly sampled X axis is supported.
Gildas manager
2011-09-07