Keywords: class

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## Plotting Spectra

Plotting spectra is controlled by several parameters:

- `SET UNIT` `Type` defines the unit of the X axis, which may be C (for Channel number), V (for Velocity), F (for Frequency) or I (for Image).
- `SET PLOT` `Type` defines the plotting type `PLOT` (Normal or Histogram); Normal gives straight lines connecting the data points (this is the default since it is faster). Histogram gives a more realistic representation of spectroscopic data.
- `SET MODE` `X (or Y) Type` defines the plotting limits in X or Y, where type stands for `TOTAL` (all channels plotted in X, complete scale in Y), `AUTO` (take the plotting limits in use when the spectrum was last written), or two numbers for fixed limits; X or Y specify the axis on which the type is to apply. For X axis, the limits are in the current units (C, V or F). For F, specify the offset from the rest frequency in MHz (note: the caption and the numbers on the axis will refer to absolute rest frequencies).

Subsections

- Single spectrum
- Spectra map
- Large set of spectra

Next: Single spectrum Up: Spectra Line Processing Previous: Spectra Line Processing Contents Index