convert: crop gif - wrong dimensions

Hello,

I use imageMagick-convert to devide large images into single
tiles. This 
works perfect for the output of the most image formats.
But when i choose "gif" as output-format, the
resulting tiles have the 
same dimensions as the source-image.
When I use the following command:  "convert -verbose
-crop 250x300 
mySrcImg.jpg tiles/K%05d.gif", I would expect that I
get numbered 
gif-files with a dimension of 250x300 pixels in the
tiles-directory. But 
instead I get the numbered gif-files, but the dimension of
each tile is 
the same as the dimension of the source-file.

Has anyone a solution or workaround for this issue?
Thanks
John
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John Hauf on  wrote...
| Hello,
| 
| I use imageMagick-convert to devide large images into
single tiles. This 
| works perfect for the output of the most image formats.
| But when i choose "gif" as output-format, the
resulting tiles have the 
| same dimensions as the source-image.
| When I use the following command:  "convert -verbose
-crop 250x300 
| mySrcImg.jpg tiles/K%05d.gif", I would expect that I
get numbered 
| gif-files with a dimension of 250x300 pixels in the
tiles-directory. But 
| instead I get the numbered gif-files, but the dimension of
each tile is 
| the same as the dimension of the source-file.
| 
| Has anyone a solution or workaround for this issue?

Read IM Examples Cropping page...
  Removing Canvas/Page Geometry
    http://www.cit.gu.edu.au/~anthony/graphics/
imagick6/crop/#crop_repage

  Anthony Thyssen ( System Programmer )    <A.Thyssengriffith.edu.au>
 -----------------------------------------------------------
------------------
               Hello Sucker!     All Games are Honest.
                  All Games have a House Percentage.
          So Come on in and Have Fun -- (While We Prove It)
                                    -- Robert Hienlien,
"Podkayne of Mars"
 -----------------------------------------------------------
------------------
     Anthony's Home is his Castle     http://www.cit.gu.
edu.au/~anthony/
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I read the IM Examples cropping page and tried with the
"+repage"
option: "convert -verbose -crop 250x300 06_001.jpg
+repage
tiles/K%05d.gif", but still got the problem the
resulting tiles have the
same dimension as the source-image.
So the repage-option changed anything. I tried both on linux
(ImageMagick 6.2.5) and winxp (ImagMagick 6.2.3). Any
further ideas?

Thanks
John

Anthony Thyssen wrote:
> John Hauf on  wrote...
> | Hello,
> | 
> | I use imageMagick-convert to devide large images into
single tiles. This 
> | works perfect for the output of the most image
formats.
> | But when i choose "gif" as output-format,
the resulting tiles have the 
> | same dimensions as the source-image.
> | When I use the following command:  "convert
-verbose -crop 250x300 
> | mySrcImg.jpg tiles/K%05d.gif", I would expect
that I get numbered 
> | gif-files with a dimension of 250x300 pixels in the
tiles-directory. But 
> | instead I get the numbered gif-files, but the
dimension of each tile is 
> | the same as the dimension of the source-file.
> | 
> | Has anyone a solution or workaround for this issue?
> 
> Read IM Examples Cropping page...
>   Removing Canvas/Page Geometry
>     http://www.cit.gu.edu.au/~anthony/graphics/
imagick6/crop/#crop_repage
> 
>   Anthony Thyssen ( System Programmer )   
<A.Thyssengriffith.edu.au>
> 
------------------------------------------------------------
-----------------
>                Hello Sucker!     All Games are Honest.
>                   All Games have a House Percentage.
>           So Come on in and Have Fun -- (While We Prove
It)
>                                     -- Robert Hienlien,
"Podkayne of Mars"
> 
------------------------------------------------------------
-----------------
>      Anthony's Home is his Castle     http://www.cit.gu.
edu.au/~anthony/
> 
> 
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