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From: Ethan A Merritt <EAMerritt@gmail.com>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: A couple of questions
Date: Tue, 25 Jul 2017 08:33:23 -0700
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layzarc@aol.com wrote:

> Ethan,
>2. The format of my binary (matrix) file as
> described in the manual: The second interpretation assumes a
> non-uniform grid with explicit x and y coordinates. The 1st row of
> input data contains the y coordinates; the 1st column of input data
> contains the x coordinates. For binary input data, the 1st element of
> the 1st row must contain the number of columns. This is the default
> for binary matrix input.

That's the default _matrix_ format.  It says nothing about images.
The pixels in a 2D image constitute a uniform rectangular grid,
but as you just quoted the binary matrix format in general describes a
non-uniform grid.   So "with image" is not an option for this data.

If the points are spaced closely enough you may get the effect you
want by using "with points pointtype 5".  That draws each of your
points as an individual square "pixel".  You can adjust the point size
to fill in gaps or reduce overlap.

	Ethan