# Invalid geometry string in change\_geometry **URL:** \ **Category:** Rails\ **Created:** [April 19, 2007, 8:33pm UTC](https://www.ruby-forum.com/t/invalid-geometry-string-in-change-geometry/92468 "2007-04-19T20:33:42Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![joanie\_abalone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/58f4c7/32.png) [@joanie\_abalone](https://www.ruby-forum.com/u/joanie_abalone)\ **Post date:** [April 19, 2007, 8:33pm UTC](https://www.ruby-forum.com/t/invalid-geometry-string-in-change-geometry/92468/1 "2007-04-19T20:33:42Z")
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 ---
**Author:** ![joanie\_abalone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/58f4c7/32.png) [@joanie\_abalone](https://www.ruby-forum.com/u/joanie_abalone)\ **Post date:** [April 19, 2007, 8:49pm UTC](https://www.ruby-forum.com/t/invalid-geometry-string-in-change-geometry/92468/2 "2007-04-19T20:49:42Z")
On Apr 19, 2007, at 2:32 PM, joanie\_abalone wrote: > ``` > size = "110x" > > ``` > > … but it all works OK when the size is buried within “#{size}”. > =\> 116 img = Magick::Image.from\_blob(the\_img.img\_data).first > (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 > RMagick-1.15.2 > fedora core 5 Rob B. [http://agileconsultingllc.com](http://agileconsultingllc.com) removed\_email\_address@domain.invalid ---
**Author:** ![joanie\_abalone](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/58f4c7/32.png) [@joanie\_abalone](https://www.ruby-forum.com/u/joanie_abalone)\ **Post date:** [April 19, 2007, 9:28pm UTC](https://www.ruby-forum.com/t/invalid-geometry-string-in-change-geometry/92468/3 "2007-04-19T21:28:47Z")
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! On Apr 19, 11:48 am, Rob B. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)