Requirement 5.0-14 - Plot line catalog overlays

[Malte Marquarding]

As per requirements document. Priority 1.

[Chris Phillips]

Line catalog should use the Lovas catalog. JPL may be added latter if there is enough demand. The libe catalog should have the following columns (with examples)

Restfrequency, alias, molecule name, mol transition, brightness, pretty name, pretty transition

1667.3590, OH1667, OH 2P3/2 J=3/2 F=2-2, 100, OH, 2P^{{3/2} J=3/2 F=2-2}

22235.120, H20, H20, 6(1,6)-5(2,3) F=5-4, 2000i, H_20, 6_{1,6}-5_{2,3) F=5-4

Only restfreq and molecular name are required

Alias is used for the set restfreq function. It will have to be added by hand. The "pretty" print version of mol name and transition will have to be added later - maybe a perl/python script can do this semi-automatically.

To allow line overlays on the plot and velocity will need to be given. This should be set in a way similar to set_freqframe. (say set_refvel).

[Malte Marquarding]

Usable via plotter.plot_lines