invalid geometry string in change_geometry

rubyonrails-talk
1

I get the following error at the browser:

ArgumentError in ImagesController#upload invalid geometry string `110×'

... for the call to change_geometry with an explicit size ('110x') as the geometry string:

  def make_thumb (the_img)     require 'RMagick'     size = "110x"     debugger if ENV['RAILS_ENV'] == 'development'     img = Magick::Image.from_blob(the_img.img_data).first     img.change_geometry('110×') {|cols, rows, i| i.resize! (cols,rows) } # img.change_geometry("110×") {|cols, rows, i| i.resize! (cols,rows) } # img.change_geometry("#{size}") {|cols, rows, i| i.resize! (cols,rows) }   end

... but it all works OK when the size is buried within "#{size}".

The debugger doesn't seem to see any difference:

(rdb:1) l [112, 121] in ./script/../config/../app/controllers/ images_controller.rb    112 def make_thumb (the_img)    113 require 'RMagick'    114 size = "110x"    115 debugger if ENV['RAILS_ENV'] == 'development' => 116 img = Magick::Image.from_blob(the_img.img_data).first    117 img.change_geometry('110×') {|cols, rows, i| i.resize! (cols,rows) }    118 # img.change_geometry("110×") {|cols, rows, i| i.resize! (cols,rows) }    119 # img.change_geometry("#{size}") {|cols, rows, i| i.resize! (cols,rows) }    120 end    121 (rdb:1) p size "110x" (rdb:1) p ('110×') "110×" (rdb:1) p ("110×") "110×" (rdb:1) p ("#{size}") "110x"

... and I sure don't. Am still trying to figure out which way is up with much of this, and would appreciate any insight as to what's going on here.

Thanks!

ps: ruby 1.8.5 (2006-12-04 patchlevel 2) [i386-linux] rails-1.2.2 GraphicsMagick 1.1.7 RMagick-1.15.2 fedora core 5

2

I get the following error at the browser:

ArgumentError in ImagesController#upload invalid geometry string `110×'

... for the call to change_geometry with an explicit size ('110x') as the geometry string:

  def make_thumb (the_img)     require 'RMagick'     size = "110x"     debugger if ENV['RAILS_ENV'] == 'development'     img = Magick::Image.from_blob(the_img.img_data).first     img.change_geometry('110×') {|cols, rows, i| i.resize! (cols,rows) } # img.change_geometry("110×") {|cols, rows, i| i.resize! (cols,rows) } # img.change_geometry("#{size}") {|cols, rows, i| i.resize! (cols,rows) }   end

... but it all works OK when the size is buried within "#{size}".

The debugger doesn't seem to see any difference:

(rdb:1) l [112, 121] in ./script/../config/../app/controllers/ images_controller.rb    112 def make_thumb (the_img)    113 require 'RMagick'    114 size = "110x"    115 debugger if ENV['RAILS_ENV'] == 'development' => 116 img = Magick::Image.from_blob(the_img.img_data).first    117 img.change_geometry('110×') {|cols, rows, i| i.resize! (cols,rows) }    118 # img.change_geometry("110×") {|cols, rows, i| i.resize! (cols,rows) }    119 # img.change_geometry("#{size}") {|cols, rows, i| i.resize! (cols,rows) }    120 end    121 (rdb:1) p size "110x" (rdb:1) p ('110×') "110×" (rdb:1) p ("110×") "110×" (rdb:1) p ("#{size}") "110x"

I suspect you're cut-n-pasting! Retype the literals 100x with a real lowercase "X" rather than the little multiplication sign that seems to be in there. It's pretty obvious with the font on my system that they're different.

-Rob

... and I sure don't. Am still trying to figure out which way is up with much of this, and would appreciate any insight as to what's going on here.

Thanks!

ps: ruby 1.8.5 (2006-12-04 patchlevel 2) [i386-linux] rails-1.2.2 GraphicsMagick 1.1.7 RMagick-1.15.2 fedora core 5

Rob Biedenharn http://agileconsultingllc.com Rob@AgileConsultingLLC.com

3

Very Good!

Here's a geometry string pasted into vi from the rmagick page, into 'foo', versus keystroking the same string into 'bar'

[pf@gezora imgr]$ cat foo "110×"

[pf@gezora imgr]$ cat bar "110x"

[pf@gezora imgr]$ cat foo | od -b 0000000 042 061 061 060 303 227 042 012

[pf@gezora imgr]$ cat bar | od -b 0000000 042 061 061 060 170 042 012 012

bar's octal '170' makes a good 'x' for the geometry string ... foo's '303' ... not so good.

won't do that anymore. thanks!