Calculate the ideal weight of your boa constrictor (logarithms in bash & bc)

michaelk · 11-18-2009, 08:55 PM

The relationship between the four equations is that one is the inverse ln of the other so:
ln(wt)=3.216*ln(length)-.5065
is
wt=.6026*length^3.216

If you look at the equations on the graph the units appear to be mixed up. However the grpah (which is in inches) seems to match the above equation ft to lbs. Have fun.

GrapefruiTgirl · 11-18-2009, 10:35 PM

Quote:

Originally Posted by michaelk

The relationship between the four equations is that one is the inverse ln of the other so:
ln(wt)=3.216*ln(length)-.5065
is
wt=.6026*length^3.216

If you look at the equations on the graph the units appear to be mixed up. However the grpah (which is in inches) seems to match the above equation ft to lbs. Have fun.

I noticed that, but wasn't sure enough to bring it up (and still am not really).

I've re-posted the script above in my first post, with what appear to be much better calculations, hopefully accurate as they can be this time, and also made it so numerous different length units can be inputted (feet meters centimeters inches), and added some input sanity checking.

More comments welcome

Sasha

brianL · 11-19-2009, 06:30 AM

What's your snake called, Sasha? You have mentioned it before, but I've forgotten.

michaelk · 11-19-2009, 07:24 AM

Looks good but will try running some numbers when I get a chance.

GrapefruiTgirl · 11-19-2009, 08:37 AM

@ BrianL -- She's a Colombian constrictor imperator; her name is Kalliste.

@ michaelk -- thanks! I'll appreciate the feedback.

brianL · 11-19-2009, 08:53 AM

Ah, yes, thought it was something Greek! "The Fairest", or summat like that. That was what was written on The Apple Of Discord, that started a cat-fight among the Goddesses and led to the Trojan War. Nice.

michaelk · 11-20-2009, 06:24 AM

I could not find anything obviously wrong wrong with the calculations. So how long is Kalliste?

GrapefruiTgirl · 11-20-2009, 07:46 AM

Thanks michaelk

Kalli is approx. 4 feet long, actually I'd guess she's a bit longer than that, but I have not tried to measure her really accurately yet. Definitely >= 4 ft though. She'll be 17 months old in a couple days.

Sasha