[plt-scheme] a png file in World

From: Matthias Felleisen (matthias at ccs.neu.edu)
Date: Mon Oct 26 10:57:18 EDT 2009

On Oct 26, 2009, at 10:37 AM, Keiko Nakata wrote:

> Hello,
> How can I make an image from a png file in World?
> I.e. I do not know how to use given png files for the plane or  
> balloon except
> for copying and pasting them...

I do not understand your question so I'll provide two answers:

1. The Universe teachpack supports an optional descriptive clause for  
world programs that allows you to record all events and create a  
series of PNG files from all interactions. It also creates an animated  
gif file. See


2. If you wish to use existing PNG files with a world program, you  
have two options:

   -- copy and paste the image from some other application (e.g., web  
   -- use the Insert | Image ... functionality from the drscheme menus

In the future we will support programmatic inclusion of images from  

-- Matthias

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