Ruby can't see RMagick installed from gem on FC4

L

Lance Squire

I'm planning on using RMagick to do thumbnails for a Rails project.

Installed RMagick using 'gem install rmagick'

Here are last few lines...
--------------------------------------------------------------------------
gcc -fPIC -Wall -g -I. -I/usr/lib/ruby/1.8/i386-linux
-I/usr/lib/ruby/1.8/i386-linux
-I/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/ext/RMagick
-DRUBY_VERSION=0x184 -I/usr/include -c rmfill.c
gcc -fPIC -Wall -g -I. -I/usr/lib/ruby/1.8/i386-linux
-I/usr/lib/ruby/1.8/i386-linux
-I/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/ext/RMagick
-DRUBY_VERSION=0x184 -I/usr/include -c rminfo.c
gcc -fPIC -Wall -g -I. -I/usr/lib/ruby/1.8/i386-linux
-I/usr/lib/ruby/1.8/i386-linux
-I/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/ext/RMagick
-DRUBY_VERSION=0x184 -I/usr/include -c rmmain.c
gcc -shared -L/usr/lib -lfreetype -lz -L/usr/lib -L"/usr/lib" -o
RMagick.so rmilist.o rmdraw.o rmutil.o rmimage.o rmfill.o rminfo.o
rmmain.o -lMagick -llcms -ltiff -lfreetype -ljpeg -lgs -lXext -lSM -lICE
-lX11 -lXt -lbz2 -lz -lpthread -lm -lpthread -lruby -ldl -lcrypt -lm
-lc
make[1]: Leaving directory
`/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/ext/RMagick'
setup.rb: entering post-setup phase...
post-setup.rb: setting up documentation...
/usr/bin/ruby -I /usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/./lib -I
/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/./ext/RMagick Adispatch.rb
/usr/bin/ruby -I /usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/./lib -I
/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/./ext/RMagick
InitialCoords.rb
post-setup.rb: InitialCoords.rb example returned error code 256
/usr/bin/ruby -I /usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/./lib -I
/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/./ext/RMagick NewCoordSys.rb
post-setup.rb: NewCoordSys.rb example returned error code 256
/usr/bin/ruby -I /usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/./lib -I
/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/./ext/RMagick OrigCoordSys.rb
post-setup.rb: OrigCoordSys.rb example returned error code 256
/usr/bin/ruby -I /usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/./lib -I
/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/./ext/RMagick
PreserveAspectRatio.rb
post-setup.rb: PreserveAspectRatio.rb example returned error code 256
/usr/bin/ruby -I /usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/./lib -I
/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/./ext/RMagick RotateScale.rb
post-setup.rb: RotateScale.rb example returned error code 256

make install
/usr/bin/ruby setup.rb install

post-install.rb: installing documentation...
Successfully installed rmagick-1.13.0
------------------------------------------------------------------------

'post-setup.rb' error codes worry me...

Tried using it anyway as installation reported as 'successful' anyway.

Rails complained about not finding the methods.

tried testing the "require 'RMagick'" in irb.

------
LoadError: no such file to load -- RMagick
from (irb):1:in `require'
from (irb):1
------

tried the sample script from the 'Users Guide'
------
require 'RMagick'
include Magick

cat = ImageList.new("Cheetah.jpg")
cat.display
exit
-------

Results:
-------
Rmagicktest.rb:1:in `require': no such file to load -- RMagick
(LoadError)
from Rmagicktest.rb:1
-------

Checked locations of Rmagick.so and libMagick.so

-------
locate RMagick.so
/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/ext/RMagick/RMagick.so
/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/lib/RMagick.so
locate libMagick.so
/usr/lib/libMagick.so
/usr/lib/libMagick.so.9
/usr/lib/libMagick.so.9.0.4
-------

No 'usr/local/lib/ to worry about...

Any ideas on where to look/ how to fix?

Thanks,

Lance F. Squire
 
J

Justin Collins

Lance said:
I'm planning on using RMagick to do thumbnails for a Rails project.

Installed RMagick using 'gem install rmagick'
Results:
-------
Rmagicktest.rb:1:in `require': no such file to load -- RMagick
(LoadError)
from Rmagicktest.rb:1
-------

Checked locations of Rmagick.so and libMagick.so

-------
locate RMagick.so
/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/ext/RMagick/RMagick.so
/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/lib/RMagick.so
locate libMagick.so
/usr/lib/libMagick.so
/usr/lib/libMagick.so.9
/usr/lib/libMagick.so.9.0.4
-------

No 'usr/local/lib/ to worry about...

Any ideas on where to look/ how to fix?

Thanks,

Lance F. Squire

If you are using a library installed with gems, you will need to

require 'rubygems'

first. Give that a try.

-Justin
 
A

Anatol Pomozov

Lance said:
------
LoadError: no such file to load -- RMagick
from (irb):1:in `require'
from (irb):1
------

tried the sample script from the 'Users Guide'
------
require 'RMagick'
include Magick

cat = ImageList.new("Cheetah.jpg")
cat.display
exit
-------

Results:
-------
Rmagicktest.rb:1:in `require': no such file to load -- RMagick
(LoadError)
from Rmagicktest.rb:1
-------

Checked locations of Rmagick.so and libMagick.so

-------
locate RMagick.so
/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/ext/RMagick/RMagick.so
/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/lib/RMagick.so
locate libMagick.so
/usr/lib/libMagick.so
/usr/lib/libMagick.so.9
/usr/lib/libMagick.so.9.0.4
-------

No 'usr/local/lib/ to worry about...

Any ideas on where to look/ how to fix?

Thanks,

Lance F. Squire

Try to run following line
ruby -rrubygems -e "require 'RMagick'; puts Magick::Long_version;"
what do you see??

Also you could read this article - you could find some interesting
things about RMagick

http://blog.pomozov.info/posts/adventure-with-rmagick-and-mongrel.html
 
L

Lance Squire

Anatol said:
Try to run following line
ruby -rrubygems -e "require 'RMagick'; puts Magick::Long_version;"
what do you see??

Also you could read this article - you could find some interesting
things about RMagick

http://blog.pomozov.info/posts/adventure-with-rmagick-and-mongrel.html

$ ruby -rrubygems -e "require 'RMagick'; puts Magick::Long_version;"
This is RMagick 1.13.0 ($Date: 2006/06/26 23:32:37 $) Copyright (C) 2006
by Timothy P. Hunter
Built with ImageMagick 6.2.5 05/25/06 Q16
file:/usr/share/ImageMagick-6.2.5/doc/index.html
Built for ruby 1.8.4 (2005-12-24) [i386-linux]
Web page: http://rmagick.rubyforge.org
Email: (e-mail address removed)
 
A

ara.t.howard

Um... This is FC4 no sudo to worry about (there is a root account to
work from)

you should never, never compile as root. fyi.
libs ARN'T in 'usr/local/lib' they are in 'usr/lib' (see top)

and do you have ld.so configured to look there?


-a
 
A

Anatol Pomozov

Lance said:
Anatol said:
Try to run following line
ruby -rrubygems -e "require 'RMagick'; puts Magick::Long_version;"
what do you see??

Also you could read this article - you could find some interesting
things about RMagick

http://blog.pomozov.info/posts/adventure-with-rmagick-and-mongrel.html

$ ruby -rrubygems -e "require 'RMagick'; puts Magick::Long_version;"
This is RMagick 1.13.0 ($Date: 2006/06/26 23:32:37 $) Copyright (C) 2006
by Timothy P. Hunter
Built with ImageMagick 6.2.5 05/25/06 Q16
file:/usr/share/ImageMagick-6.2.5/doc/index.html
Built for ruby 1.8.4 (2005-12-24) [i386-linux]
Web page: http://rmagick.rubyforge.org
Email: (e-mail address removed)


Add explicit
require 'rebygems'
to your code then


require 'rubygems'
require 'RMagick'
include Magick
cat = ImageList.new("Cheetah.jpg")
cat.display
exit
 
L

Lance Squire

Justin said:
If you are using a library installed with gems, you will need to

require 'rubygems'

first. Give that a try.

-Justin

This dose make the test code from the 'Users guide' work.

Though you would think they would have included it....

Lance
 
L

Lance Squire

unknown said:
you should never, never compile as root. fyi.

Yes, but I must 'su' for the 'gem install rmagick' to work properly.
and do you have ld.so configured to look there?

Well, as Rails is working properly, and was installed the same way, I
presume that ld.so is pointing to 'usr/lib'

Can't find relevent ld.so to check...

# locate ld.so
/etc/ld.so.cache
/etc/ld.so.conf
/etc/ld.so.conf.d
/etc/ld.so.conf.d/mysql-i386.conf
/etc/ld.so.conf.d/qt-i386.conf
/usr/lib/librpmbuild.so
/usr/lib/kde3/kded_kssld.so
/usr/share/doc/man-pages-ja-20060115/translation_lists/ld.so.translation_list
/usr/share/man/ja/man8/ld.so.8.gz
/usr/share/man/man8/ld.so.8.gz

Lance
 
A

ara.t.howard

Yes, but I must 'su' for the 'gem install rmagick' to work properly.

that means you are compiling as root. if the installs uses non-standard
library paths (LD_RUN_PATH or -r switch to ld.so) they will then fail at
runtime as doing this as root is silently ignored.
Well, as Rails is working properly, and was installed the same way, I
presume that ld.so is pointing to 'usr/lib'

rails doesn't require a properly configured ld.so since it uses now shared
libs
Can't find relevent ld.so to check...

# locate ld.so
/etc/ld.so.cache
/etc/ld.so.conf
/etc/ld.so.conf.d
/etc/ld.so.conf.d/mysql-i386.conf
/etc/ld.so.conf.d/qt-i386.conf
/usr/lib/librpmbuild.so
/usr/lib/kde3/kded_kssld.so
/usr/share/doc/man-pages-ja-20060115/translation_lists/ld.so.translation_list
/usr/share/man/ja/man8/ld.so.8.gz
/usr/share/man/man8/ld.so.8.gz

to check - find the '*.so' created by the 'gem instann rmagick' command, then
do something like

ldd RMagick.so

for instance

jib:~ > ldd /dmsp/reference/ruby-1.8.1/lib/ruby/site_ruby/1.8/i686-linux/RMagick.so
libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x0086e000)
libz.so.1 => /usr/lib/libz.so.1 (0x002d6000)
libMagick.so.6 => /dmsp/reference/lib/libMagick.so.6 (0x00c1f000)
libtiff.so.3 => /dmsp/reference/lib/libtiff.so.3 (0x00e82000)
libjpeg.so.62 => /usr/lib/libjpeg.so.62 (0x0068f000)
libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x00ad4000)
libSM.so.6 => /usr/X11R6/lib/libSM.so.6 (0x00578000)
libICE.so.6 => /usr/X11R6/lib/libICE.so.6 (0x00111000)
libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x00128000)
libXt.so.6 => /usr/X11R6/lib/libXt.so.6 (0x009c1000)
libbz2.so.1 => /usr/lib/libbz2.so.1 (0x00e08000)
libpthread.so.0 => /lib/tls/libpthread.so.0 (0x00207000)
libm.so.6 => /lib/tls/libm.so.6 (0x0079a000)
libdl.so.2 => /lib/libdl.so.2 (0x003f7000)
libcrypt.so.1 => /lib/libcrypt.so.1 (0x0053a000)
libc.so.6 => /lib/tls/libc.so.6 (0x00ae2000)
/lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x00506000)


-a
 
L

Lance Squire

Jeff said:
I usually use require_gem to get a gem into Rails:

require 'rubygems'
require_gem 'rmagick'
include RMagick

HTH,
Jeff

This at least gives me a new error message.
 
L

Lance Squire

unknown said:
that means you are compiling as root. if the installs uses non-standard
library paths (LD_RUN_PATH or -r switch to ld.so) they will then fail at
runtime as doing this as root is silently ignored.

should I then remove the package and again attempt to install as user?

(Thought I installed rails as user, but could not get rmagick to install
that way...)

to check - find the '*.so' created by the 'gem instann rmagick' command,
then

found:

]$ locate RMagick.so
/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/ext/RMagick/RMagick.so
/usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/lib/RMagick.so
do something like

ldd RMagick.so
$ ldd /usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/lib/RMagick.so
linux-gate.so.1 => (0x00168000)
libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x00385000)
libz.so.1 => /usr/lib/libz.so.1 (0x00fe5000)
libMagick.so.9 => /usr/lib/libMagick.so.9 (0x00ba8000)
liblcms.so.1 => /usr/lib/liblcms.so.1 (0x00e55000)
libtiff.so.3 => /usr/lib/libtiff.so.3 (0x00111000)
libjpeg.so.62 => /usr/lib/libjpeg.so.62 (0x00184000)
libgs.so.8 => /usr/lib/libgs.so.8 (0x00ff8000)
libXext.so.6 => /usr/lib/libXext.so.6 (0x001a6000)
libSM.so.6 => /usr/lib/libSM.so.6 (0x007b1000)
libICE.so.6 => /usr/lib/libICE.so.6 (0x006ce000)
libX11.so.6 => /usr/lib/libX11.so.6 (0x001b6000)
libXt.so.6 => /usr/lib/libXt.so.6 (0x00ef9000)
libbz2.so.1 => /usr/lib/libbz2.so.1 (0x002b3000)
libpthread.so.0 => /lib/libpthread.so.0 (0x002c3000)
libm.so.6 => /lib/libm.so.6 (0x002d7000)
libruby.so.1.8 => /usr/lib/libruby.so.1.8 (0x003f3000)
libdl.so.2 => /lib/libdl.so.2 (0x002fc000)
libcrypt.so.1 => /lib/libcrypt.so.1 (0x00889000)
libc.so.6 => /lib/libc.so.6 (0x004ed000)
libpng12.so.0 => /usr/lib/libpng12.so.0 (0x00300000)
libcupsimage.so.2 => /usr/lib/libcupsimage.so.2 (0x00328000)
libcups.so.2 => /usr/lib/libcups.so.2 (0x0075a000)
libssl.so.6 => /lib/libssl.so.6 (0x0033f000)
libcrypto.so.6 => /lib/libcrypto.so.6 (0x008b7000)
libnsl.so.1 => /lib/libnsl.so.1 (0x004d3000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x009ec000)
libXau.so.6 => /usr/lib/libXau.so.6 (0x004e9000)
libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x00fb5000)
/lib/ld-linux.so.2 (0x00169000)
libgnutls.so.12 => /usr/lib/libgnutls.so.12 (0x00620000)
libgssapi_krb5.so.2 => /usr/lib/libgssapi_krb5.so.2 (0x0069b000)
libkrb5.so.3 => /usr/lib/libkrb5.so.3 (0x00ad9000)
libcom_err.so.2 => /lib/libcom_err.so.2 (0x006b4000)
libk5crypto.so.3 => /usr/lib/libk5crypto.so.3 (0x006e8000)
libresolv.so.2 => /lib/libresolv.so.2 (0x006b7000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x0070d000)
libgcrypt.so.11 => /usr/lib/libgcrypt.so.11 (0x0082c000)
libgpg-error.so.0 => /usr/lib/libgpg-error.so.0 (0x00e37000)
libkrb5support.so.0 => /usr/lib/libkrb5support.so.0 (0x006ca000)
and
]$ ldd /usr/lib/ruby/gems/1.8/gems/rmagick-1.13.0/ext/RMagick/RMagick.so
linux-gate.so.1 => (0x00168000)
libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x006a1000)
libz.so.1 => /usr/lib/libz.so.1 (0x00d3f000)
libMagick.so.9 => /usr/lib/libMagick.so.9 (0x00184000)
liblcms.so.1 => /usr/lib/liblcms.so.1 (0x00487000)
libtiff.so.3 => /usr/lib/libtiff.so.3 (0x00cd9000)
libjpeg.so.62 => /usr/lib/libjpeg.so.62 (0x00125000)
libgs.so.8 => /usr/lib/libgs.so.8 (0x00f52000)
libXext.so.6 => /usr/lib/libXext.so.6 (0x00c0b000)
libSM.so.6 => /usr/lib/libSM.so.6 (0x004c5000)
libICE.so.6 => /usr/lib/libICE.so.6 (0x0079a000)
libX11.so.6 => /usr/lib/libX11.so.6 (0x004ce000)
libXt.so.6 => /usr/lib/libXt.so.6 (0x003b2000)
libbz2.so.1 => /usr/lib/libbz2.so.1 (0x00111000)
libpthread.so.0 => /lib/libpthread.so.0 (0x00147000)
libm.so.6 => /lib/libm.so.6 (0x00449000)
libruby.so.1.8 => /usr/lib/libruby.so.1.8 (0x007b4000)
libdl.so.2 => /lib/libdl.so.2 (0x00e7e000)
libcrypt.so.1 => /lib/libcrypt.so.1 (0x00db5000)
libc.so.6 => /lib/libc.so.6 (0x00894000)
libpng12.so.0 => /usr/lib/libpng12.so.0 (0x0076d000)
libcupsimage.so.2 => /usr/lib/libcupsimage.so.2 (0x0040b000)
libcups.so.2 => /usr/lib/libcups.so.2 (0x005cb000)
libssl.so.6 => /lib/libssl.so.6 (0x00601000)
libcrypto.so.6 => /lib/libcrypto.so.6 (0x009c7000)
libnsl.so.1 => /lib/libnsl.so.1 (0x00422000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00afc000)
libXau.so.6 => /usr/lib/libXau.so.6 (0x00d75000)
libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x0015b000)
/lib/ld-linux.so.2 (0x00169000)
libgnutls.so.12 => /usr/lib/libgnutls.so.12 (0x00c1b000)
libgssapi_krb5.so.2 => /usr/lib/libgssapi_krb5.so.2 (0x0046e000)
libkrb5.so.3 => /usr/lib/libkrb5.so.3 (0x00de3000)
libcom_err.so.2 => /lib/libcom_err.so.2 (0x00121000)
libk5crypto.so.3 => /usr/lib/libk5crypto.so.3 (0x00646000)
libresolv.so.2 => /lib/libresolv.so.2 (0x0066b000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00438000)
libgcrypt.so.11 => /usr/lib/libgcrypt.so.11 (0x0070f000)
libgpg-error.so.0 => /usr/lib/libgpg-error.so.0 (0x00161000)
libkrb5support.so.0 => /usr/lib/libkrb5support.so.0 (0x00444000)

Sorry for longish posts...

Lance
 
A

ara.t.howard

Sorry for longish posts...

no prob.

it looks RMagick compiled ok - otherwise you wouldn't have an so...


what do these commands do for you

harp:~ > ruby -r rubygems -e' require "RMagick"; p Magick '
Magick

if that doesn't work try

harp:~ > LD_LIBRARY_PATH=/usr/lib ruby -r rubygems -e' require "RMagick"; p Magick '
Magick

??

-a
 
L

Lance Squire

unknown said:
what do these commands do for you

harp:~ > ruby -r rubygems -e' require "RMagick"; p Magick '
Magick

$ ruby -r rubygems -e' require "RMagick"; p Magick '
----
Magick
----

$ ruby -r rubygems -e' require "RMagick"; p Magick 'Magick
----
-e:1: warning: parenthesize argument(s) for future version
-e:1: undefined method `Magick' for #<Object:0xb7f3f970> (NoMethodError)
----

if that doesn't work try

harp:~ > LD_LIBRARY_PATH=/usr/lib ruby -r rubygems -e' require
"RMagick"; p Magick '
Magick

$ LD_LIBRARY_PATH=/usr/lib ruby -r rubygems -e' require
"RMagick"; p Magick '
 
L

Lance Squire

unknown said:
__that__ is your problem

it's Magick - not RMagick!

-a

changing:
require 'rubygems'
require_gem 'rmagick'
include RMagick

to:
require 'rubygems'
require_gem 'rmagick'
include Magick

strangly produces this message:

undefined method `include' for #<MyBountyController:0xb796d1d4>


Lance
 
A

ara.t.howard

$ ruby -r rubygems -e' require "RMagick"; p Magick '

therefore, you've got it installed. if you are having issues with rails you
have issues with permissions or you have two rubys installed and the web users
is using a different one
$ ruby -r rubygems -e' require "RMagick"; p Magick 'Magick

cut and past error. this is fine
$ LD_LIBRARY_PATH=/usr/lib ruby -r rubygems -e' require
"RMagick"; p Magick '

that has to be on one line!


anyhow. you have installed RMagick and can use it fine from the command line.
what's your exact issue in rails then?

-a
 
L

Lance Squire

unknown said:
therefore, you've got it installed. if you are having issues with rails
you
have issues with permissions or you have two rubys installed and the web
users
is using a different one

This may or may not have happened when I tried to upgrade the version of
rails.
Don't know how to check and or rectify...
anyhow. you have installed RMagick and can use it fine from the command
line.
what's your exact issue in rails then?

Trying to use Rmagick to make thumbnails of images previously stored on
the drive.

You've seen the errors above. here is the code as it stands now:

def make_thumb(location, image, thumb)
require 'rubygems'
require_gem 'rmagick'
include Magick

pic = Magick::Image.read("#{location}#{image}")
imgwidth = pic.columns
imgheight = pic.rows
imgratio = imgwidth.to_f / imgheight.to_f
imgratio > aspectratio ? scaleratio = 64 / imgwidth : scaleratio =
64 / imgheight
thumb = pic.resize(scaleratio)

white_bg = Magick::Image.new(64, thumb.height)
pic = white_bg.composite(thumb, Magick::CenterGravity,
Magick::OverCompositeOp)
pic.write("#{location}#{thumb}")
end

modified from this site:

http://www.bigbold.com/snippets/tag/rmagick
(bottom 2 examples)

Lance
 
A

ara.t.howard

Trying to use Rmagick to make thumbnails of images previously stored on
the drive.

You've seen the errors above. here is the code as it stands now:

all your erros showed the constant 'RMagick' - that doesn't exist. it's
Magick, as you've got below. somewhere in your code you've got the constant
RMagick if you're actually getting the error shown.
def make_thumb(location, image, thumb)
require 'rubygems'
require_gem 'rmagick'

this is 'RMagick' not 'rmagick'
include Magick

pic = Magick::Image.read("#{location}#{image}")
imgwidth = pic.columns
imgheight = pic.rows
imgratio = imgwidth.to_f / imgheight.to_f
imgratio > aspectratio ? scaleratio = 64 / imgwidth : scaleratio =
64 / imgheight
thumb = pic.resize(scaleratio)

white_bg = Magick::Image.new(64, thumb.height)
pic = white_bg.composite(thumb, Magick::CenterGravity,
Magick::OverCompositeOp)
pic.write("#{location}#{thumb}")
end

in short

- you've got RMagick installed correctly

- you've posted two errors caused by typos

1) RMagick vs Magick

2) require 'rmagick' vs. require 'RMagick'


the example i posted showed how to do both correctly.

for this you should be able to find your error. rest assured though, you have
correctly installed RMagick.

good luck.

-a
 

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