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ANALYSE\MODEL Y_Variable [X_Variable] [/BLANK Bval] [/REGULAR [Xref
Xval RestFreq]] [/FREQUENCY LineName RestFreq] [/XAXIS Xref Xval Xinc
Generates a CLASS spectrum from a 1D SIC variable. Note that the 1D
variable can be (and frequently is) a subset of a higher dimensionality
variable. This command is typically used either to generate test data,
or more frequently to transfer data from a GILDAS image (or cube) to
A second variable, if present, is interpreted as an associated X axis
scale for a presumably non linear or irregularly sampled frequency axis,
as can occur for non resampled data from AOS backends (or optical spec-
tra). Please note however that non linear axes are a largely untested
feature in CLASS, you should avoid this solution when possible.
There are three (exclusive) ways to define the X axis: provide a X ar-
ray, /XAXIS option, /REGULAR option (see below). The model header will
have a minimal values set. On the other hand, if none of these three is
used, the command will copy RX and header from the previous R buffer in
Allow the user to provide the blanking value. Default is -1000.
/REGULAR [Xref Xval RestFreq]
Indicate that data are regularly spaced along the X axis. If no ref-
erence pixel and value at reference are supplied, default values are
set to respectively half the channel number and to the velocity in
the nearest channel.
/FREQUENCY LineName RestFreq
Indicate line name and the rest frequency. Default rest frequency is
/XAXIS Xref Xval Xinc Unit
Define the X axis with its reference channel (Xref), its value at
reference channel (Xval), and the increment per channel (Xinc).
Units are km/s or MHz if Unit is VELOCITY or FREQUENCY respectively.
If Unit is FREQUENCY, Xval is expected to be the rest frequency.