On Mon, 24 Aug 2009 18:09:29 -0600 Bob Meetin <[email protected]> wrote:
| Fred Weinhaus wrote: | | > see http://www.imagemagick.org/Usage/thumbnails | > | This is a great resource, however some of the options are not working. | -alpha transparent is not recognized - same result on my desktop as on | the webhost server. | | % convert thumbnail.gif -border 2 -alpha transparent \ | -background none -fill white -stroke none -strokewidth 0 \ | -draw "@rounded_corner.mvg" rounded_corner_mask.png | convert: UnrecognizedAlphaChannelType `transparent'. | | This is an option to ImageMagick's convert which I copied right off | their example page. http://www.imagemagick.org/Usage/thumbnails/#rounded | It is about 3/4 down under the heading "Border with Rounded Corner". | | When I did a google on the error message it says that an upgrade is in | order. | | syncsync:~> identify -version | Version: ImageMagick 6.3.7 06/04/09 Q16 http://www.imagemagick.org | Copyright: Copyright (C) 1999-2008 ImageMagick Studio LLC | | The web page says the examples were generated with Examples Generated | with: IM v6.5.4-6 2009-07-30. I just used the package manager | (synaptics) to upgrade and it still returns the same version. I'm not a | sys admin type. What do I need to do (in user friendly terms) to get | alpha transparent working? | The packages in the offical distribution archives are usually way out of date. As you are using synaptics I would say you are using Ubuntu. Unfortunately while we have package builds for fedora and redhat deritives, no one had provided infomation on how to build a 'deb' package of ImageMagick. In any case the -alpha methods are convenience methods, which are described in http://www.imagemagick.org/Usage/basics/#alpha -alpha transparent basically takes an existing image and turns it transparent. For older versions the equivalent is -matte -channel A -evaluate set 0 +channel Alternatives for making an image also include null: -matte -compose Clear -composite -compose over -matte -channel A -threshold -1 +channel -matte -fill none -draw 'matte 0,0 reset' These are listed on http://www.imagemagick.org/Usage/canvas/#transparent Anthony Thyssen ( System Programmer ) <[email protected]> ----------------------------------------------------------------------------- As I turned away, I heard the guard mutter behind me, "One of these days I'm going to say the wrong thing to the wrong mage, and I'll be spending the rest of my days searching for Mrs Right Toad." -- Elf Sternberg, "Aimee" ----------------------------------------------------------------------------- Anthony's Home is his Castle http://www.cit.gu.edu.au/~anthony/ _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
