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From: Peter Bailey on 5 May 2010 08:45
Hello,
I keep getting an "undefined method `to_f'" for this simple script. Can
someone help me? I'm interrogating jpeg graphics files and I need to log
their widths and depths, in picas.
Thanks a lot,
Peter

Dir.chdir("T:/ioma/temp")
Dir.glob("*.jpg").each do |file|
fileinfo = `alchemy #{file} -x`
filewidth = fileinfo.match(/Width x Height: ([0-9]{1,5}) x
([0-9]{1,5})[1]/)
filedepth = fileinfo.match(/Width x Height: ([0-9]{1,5}) x
([0-9]{1,5})[2]/)
fileres = fileinfo.match(/Dots per inch: [0-9]{1,5}/)

newfilewidth = (filewidth.to_f / 200) * 6
newfiledepth = (filedepth.to_f / 200) * 6

File.open("t:/ioma/iomafiles.log", "a") { |f| f.print "#{file} width:
#{newfilewidth.to_f.round} depth: #{newfiledepth.to_f.round}\n" }
end
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From: Peter Bailey on 5 May 2010 08:46
Sorry. I meant a "to_f" there in the subject line, although it happens
with to_i, too.


Peter Bailey wrote:
> Hello,
> I keep getting an "undefined method `to_f'" for this simple script. Can
> someone help me? I'm interrogating jpeg graphics files and I need to log
> their widths and depths, in picas.
> Thanks a lot,
> Peter
>
> Dir.chdir("T:/ioma/temp")
> Dir.glob("*.jpg").each do |file|
> fileinfo = `alchemy #{file} -x`
> filewidth = fileinfo.match(/Width x Height: ([0-9]{1,5}) x
> ([0-9]{1,5})[1]/)
> filedepth = fileinfo.match(/Width x Height: ([0-9]{1,5}) x
> ([0-9]{1,5})[2]/)
> fileres = fileinfo.match(/Dots per inch: [0-9]{1,5}/)
>
> newfilewidth = (filewidth.to_f / 200) * 6
> newfiledepth = (filedepth.to_f / 200) * 6
>
> File.open("t:/ioma/iomafiles.log", "a") { |f| f.print "#{file} width:
> #{newfilewidth.to_f.round} depth: #{newfiledepth.to_f.round}\n" }
> end

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From: Peter Hickman on 5 May 2010 09:08
[Note: parts of this message were removed to make it a legal post.]

to_f occurs on three lines in the code you show us. How about a clue as to
which line the error belongs to?

From: Calamitas on 5 May 2010 09:11
On Wed, May 5, 2010 at 2:45 PM, Peter Bailey <pbailey(a)bna.com> wrote:
> Hello,
> I keep getting an "undefined method `to_f'" for this simple script. Can
> someone help me? I'm interrogating jpeg graphics files and I need to log
> their widths and depths, in picas.
> Thanks a lot,
> Peter
>
> Dir.chdir("T:/ioma/temp")
> Dir.glob("*.jpg").each do |file|
>  fileinfo    = `alchemy #{file} -x`
>  filewidth        = fileinfo.match(/Width x Height: ([0-9]{1,5}) x
> ([0-9]{1,5})[1]/)
>  filedepth        = fileinfo.match(/Width x Height: ([0-9]{1,5}) x
> ([0-9]{1,5})[2]/)
>  fileres        = fileinfo.match(/Dots per inch: [0-9]{1,5}/)

Maybe move [1] and [2] outside the regexps?

Peter

From: Peter Bailey on 5 May 2010 09:29
Calamitas wrote:
> On Wed, May 5, 2010 at 2:45 PM, Peter Bailey <pbailey(a)bna.com> wrote:
>> �filewidth � � � �= fileinfo.match(/Width x Height: ([0-9]{1,5}) x
>> ([0-9]{1,5})[1]/)
>> �filedepth � � � �= fileinfo.match(/Width x Height: ([0-9]{1,5}) x
>> ([0-9]{1,5})[2]/)
>> �fileres � � � �= fileinfo.match(/Dots per inch: [0-9]{1,5}/)
>
> Maybe move [1] and [2] outside the regexps?
>
> Peter

Yes, thanks. I found the problem. It's the placement of my [1] and [2]
there at the end of the lines.

Thanks for your responses.
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