[Gegl-developer] how to specify input parameters

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To: gegl-developer@xxxxxxxxxxxxxxxxxxxxxx
Subject: [Gegl-developer] how to specify input parameters
From: Daniel Rogers <daniel@xxxxxxxxxxxxxxxxx>
Date: Sat, 22 Feb 2003 20:46:09 -0800
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20030214

How do you specify that an input image is optional?

Also, if the input is not given, how to you tell it's not there when youare handed an ImageIterator?


Thanks,
Daniel

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