I installed ImageMagick on cygwin.

$ convert --version
Version: ImageMagick 6.5.6-0 2009-09-14 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2009 ImageMagick Studio LLC

But I got the following error.

$ convert test.png -crop 50%x100% +repage test_vertical_%d.png
convert: no decode delegate for this image format `test.png' @
constitute.c/ReadImage/503.
convert: missing an image filename `test_vertical_%d.p
ng' @ convert.c/ConvertImageCommand/2819.


On Sun, Sep 27, 2009 at 2:36 PM, Fred Weinhaus <[email protected]> wrote:
> Your version is very old (320 versions old). You might want to
> upgrade if you can.
>
> With regard to +repage, it should work in IM 6.
>
> See http://www.imagemagick.org/Usage/crop/#crop_repage
> also http://www.imagemagick.org/script/command-line-options.php?#repage
>
>
> There is a note there for IM 5 to use -page +0+0 if no +repage.
>
>
>
>>I don't find '+repage', but '-repage'. My imagemagic is of the
>>following version. Is it too old?
>>
>>$ convert --help
>>Version: ImageMagick 6.2.4 02/10/07 Q16 http://www.imagemagick.org
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