gz2_scheme.txt

E, S, A
e (, not)
B (, not)
p (, not)
0,1,2,3
O (, not)
r,i,c
r,l,d,i,o,m,d (only if Task 06 is set)
er, eb, en (only if Task 02 is set)
t,m,l
1, 2, 3, 4, +, ?


    Assume plurality choice MUST be made for:

    elliptical/spiral/artifact
    bulge shape
    bulge dominance
    odd feature


Possible types for
    
    Ellipticals:

        Er, Ei, Ec          smooth, roundness (3)
        Er(), ...           smooth, roundness, odd feature (21)

    Features/disk:

        Ser, Seb, Sen       features/disk, edge-on, bulge shape (3)
        Ser(), ...          features/disk, edge-on, bulge shape, odd feature (21)

S0      Sa, Sa()            features/disk, bulge (odd) (4, 28)
Sa-d    Sa1t, Sa1t()        features/disk, bulge, spiral, tightness, number (odd) (72, 504)
SB0     SaB, SaB()          features/disk, bulge, barred (odd) (4, 28)
SBa-d   SaB1t, SaB1t(d)     features/disk, bulge, barred, spiral, tightness, number (odd) (72, 504)
    
    Stars/artifacts:

        A                   star/artifact (1)

    Total: 1265 categories in this scheme
           genuinely represents the total number of paths, assuming a classification is complete.


OK. This shouldn't be too hard to code - just run through literally all the galaxies, apply rules, and add classification. 
Create FITS table with dr7objid and gz2class?