Non-aligned spectra

##
Non-aligned spectra

When aligning the spectra by velocity or frequency (SET ALIGN VELOCITY|FREQUENCY), the input channels may not be aligned with the output ones (because of different resolutions or different abscissae at reference channels). A resampling must be performed in these cases. Fig. shows a generic example where the channels have different size and are not aligned.

Figure: How the input spectra and are resampled into the intermediate spectra and resp. to match the desired output spectrum (general case). (resp. ) channels to (resp. to ) have a partial or total contribution to .

Subsections

- Resampling
- Channel weight of a resampled spectrum
- Output spectrum