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Weighting modes

In CLASS, the SET WEIGHT command offers 3 weighting modes (see IRAM memo 2009-4):

These are relative weights between spectra to be combined in commands like AVERAGE, XY_MAP, etc. Absolute weights involve an additional constant factor which is not described here. The weighting modes can not be mixed: when combining spectra, all weights are EQUAL, or all weights are TIME, or all weights are SIGMA. Note that the TIME weight is a theoretical value based on parameter values taken at observation time, while the SIGMA is a measured value based on the actual noise property of the spectrum.


next up previous contents
Next: Switching modes Up: class-weighting Previous: Contents   Contents
Gildas manager 2023-06-01