[magick-users] Another +append question

[John Smith]

 Ah thank you Fred & Anthony!  I believe my problem getting close to
being solved.... & BTW the quality isssue is a non-issue.  Turns out I
had some muck in the image, and was mis-reading them.  All looks good
there :]

.... but, I am struggling with these commands still.  Again to re-cap, I
have two images with transparent backgrounds I wish to join.  It seems
using either of these commands fails to generate a joined image retaining
the transparent quality... it is joined however, and the dimensions are
all correct, but loss of transparency in the output. :[

this is what I am using.

convert image_one.png image_two.png +append output.png

and also tried,

convert image_one.png image_two.png -matte -channel RGBA +append
output.png

Thank you Fred & Anthony for helping me figure this one out.  :)

  ----- Original Message -----
  From: "Anthony Thyssen"
  To: "John Smith"
  Subject: Re: [magick-users] Another +append question
  Date: Mon, 17 Mar 2008 09:32:31 +1000


  "John Smith" on wrote...
  | Hello, I am stuck at a crossroads with the +append command.
  |
  | When I use,
  |
  | convert +append image_one.png image_two.png output_image.png
  |
  | It loses the transparent quality after the join.... which I don't
  want.=20
  | Is there a way to perserve image transparency with image joins? :)
  |

  Fred already mentioned about the option order.

  Basically IM handles options in the order given, (except for a legacy
  ordering which wyou should not rely on).
  See IM Examples, Basics
  http://imagemagick.org/Usage/basics/


  However I can not see why you should have a loss of quality with the
  above. Append does not re-sample the image or generate new colors.
  Also the PNG format may cause a small file size change rather than a
  quality effect. so that could not be it.

  Can you post the URL's of two small images whcih when appended causes
  the loss of quality.


  Anthony Thyssen ( System Programmer )
  -----------------------------------------------------------------------------
  Out testing new time machine. Be back yesterday!
  -----------------------------------------------------------------------------
  Anthony's Home is his Castle http://www.cit.gu.edu.au/~anthony/

-- 
Want an e-mail address like mine?
Get a free e-mail account today at www.mail.com!