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Working with fundamental vibrational transitions

The 'AmesPAHdbIDLSuite_Transitions'-object exposes the fundamental vibrational transitions.

transitions = pahdb->getTransitionsByUID( $
              pahdb->Search("c<=20 neutral n=2 neutral"))

The 'AmesPAHdbIDLSuite_Transitions-object's 'Print'-method will print out the associated fundamental vibrational transitions for each PAH species.

transitions->Print

Optionally, the 'Str'-keyword can be given to the 'Print'-method, which will return the associated fundamental vibrational transitions for each PAH species as a single, concatenated string.

transitions->Print,Str=Str

The 'AmesPAHdbIDLSuite_Transitions'-object's 'Plot'-method will display the fundamental vibrational transitions in a 'stick'-plot. The transitions of each PAH species will be presented in a different color.

transitions->Plot

Optionally, the 'Wavelength', 'Stick', 'Oplot', 'Legend', and 'Color'-keywords can be given to the 'Plot'-method to control the abscissa, stick representation, overplotting, legend and color, respectively. Through IDL's keyword inheritance mechanism additional keywords accepted by IDL's 'PLOT'-procedure can be passed.

transitions->Plot,/Wavelength,Color=5,XRANGE=[2.5,15],/XSTYLE

The 'AmesPAHdbIDLSuite_Transitions'-object's 'Write'-method will write the fundamental vibrational transitions to file. The transitions of each PAH species will be written to a separate text (.txt) file, where each filename will have the PAH species UID embedded. Optionally, a prefix can be given that will be prepended to the filename.

transitions->Write,'myPrefix'