From: Peter Bailey <pbailey@...>
Date: 2008-01-08T03:06:00+09:00
Subject: Where do I put the ".to_f" ?

Hello,
I need to do some simply computations on numbers pulled from a file. I
get the numbers using "scan." I've proven that I can get the numbers
alright. But, I need to do some division and multiplication on those
numbers, and, to be accurate, the numbers need to be floating numbers,
not integers. So, I've tried everything, or so I think, and Ruby keeps
complaining about my ".to_f" method. Can someone please tell me where
this .to_f should go?
Thanks,
Peter

Dir.chdir("K:")
tifffile  = File.basename(ARGV.to_s, ".*") + ".tif"
info    = `tiffinfo #{tifffile}`
width    = info.scan(/Image Width: ([0-9]{1,5})/)
depth    = info.scan(/Image Length: ([0-9]{1,5})/)
res    = info.scan(/Resolution: [0-9]{1,5}, ([0-9]{1,5}) pixels\/inch/)

newwidth        = width.to_f / 600 * 6
newdepth        = depth.to_f / 600 * 6

I get this from Ruby:
sizer.rb:10: undefined method `to_f' for [["5100"]]:Array
(NoMethodError)
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