Is there a ceiling function like in excel?

Frankn

Wow! Thanks for taking the time to explain it in a Ruby's for Dummies term! No way I would of come up with a solution to that problem!

That now makes total sense... now I'm off to try and implement this in my script... should fun

Thanks again!

Jim

my_num = 0.17578125 frac = 16.0 # 1/16th (radix, specifically) rounded_num = (my_num * frac).round / frac

Chris Fullmer

That can't be right, you didn't even have to make any special methods to do that

Dan Rathbun

This is for measurements?

One limitation within Sketchup, is that the precision is limited to 0.001", no matter what the model units are set to.

So using a fractional float of 0.1875" may get rounded by Sketchup. Will it be 0.187" or 0.188" ??
I would suggest that you decide what it will be in your 'rounding' method...

Jim

@Chris -Been there - just passing it along.

TIG

Here's Jim's clever solution made into a method...

def roundtofraction(num, frac)
  num = num.to_f
  frac = frac.to_f
  return (num * frac).round / frac
end

Usage:
my_num = 0.17578125
my_frac = 16
my_num=roundtofraction(my_num, my_frac)

0.1875

Frankn

@jim said:

my_num = 0.17578125 frac = 16.0 # 1/16th (radix, specifically) rounded_num = (my_num * frac).round / frac

Dude you're a genius! That is awesome!

Thank you!!

Frankn

@chris fullmer said:

That can't be right, you didn't even have to make any special methods to do that

Chris don't feel bad even after doing this thing called 'programming' for the last few weeks I'm still getting the hang of methods, classes and all that jazz!!

Frankn

@dan rathbun said:

This is for measurements?

One limitation within Sketchup, is that the precision is limited to 0.001", no matter what the model units are set to.

So using a fractional float of 0.1875" may get rounded by Sketchup. Will it be 0.187" or 0.188" ??
I would suggest that you decide what it will be in your 'rounding' method...

Yes Dan, this is for measurements.

I didn't know that limitation about Sketchup, interesting. But I'm not building a plane here just cabinets, vanties and that kind of thing, but I just don't like seeing that ~ and this script programming is addictive! You just keep adding on features and stuff you can do, I think I might have a problem.

Thanks for the info

Frankn

@tig said:

Here's Jim's clever solution made into a method...

def roundtofraction(num, frac)
>   num = num.to_f
>   frac = frac.to_f
>   return (num * frac).round / frac
> end

Usage:

my_num = 0.17578125
my_frac = 16
my_num=roundtofraction(my_num, my_frac)

0.1875

Thanks yet again TIG!

Chris Fullmer

Yeah TIG, thanks for wrapping it into its own method, now it feels at least slightly over-engineered

TIG

Anything to prolong the embarrassment

Chris Fullmer

@tig said:

Anything to prolong the embarrassment

Dan Rathbun

Just a note to remind all..

... that now with Ruby in the 1.8.6 branch, we have both a ceil() and a floor() method defined for the Float class.