On Mon, Dec 23, 2002 at 01:54:30AM -0700, Matt Gushee wrote:
> 
> I am trying to learn the OCamlplot API, and as a first step I have
> written a simple program that is supposed to generate a PNG image with a
> single colored rectangle (see code below). Well, the output is indeed a
> PNG image, but there is no colored rectangle; the image is just solid
> white. And apparently the image's colorspace is a 1-bit grayscale:

Apparently I was missing a call to Plot.space or Plot.fspace, e.g.

  ....
> Plot.openpl pl;
  Plot.fspace pl 0. 0. 500. 400.;

I didn't (and still don't) know what x- and y-values are reasonable for
this function, and wasn't sure it was necessary. But apparently it is.

-- 
Matt Gushee                 When a nation follows the Way,
Englewood, Colorado, USA    Horses bear manure through
mgushee@havenrock.com           its fields;
http://www.havenrock.com/   When a nation ignores the Way,
                            Horses bear soldiers through
                                its streets.
                                
                            --Lao Tzu (Peter Merel, trans.)
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