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From: roberson@ibd.nrc-cnrc.gc.ca (Walter Roberson)
Newsgroups: comp.soft-sys.matlab
Subject: Re: plot markersize property confuses me
Date: Wed, 28 May 2008 22:55:01 +0000 (UTC)
Organization: National Research Council Canada - Conseil national de rechereches Canada
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In article <g1kklj$ade$1@fred.mathworks.com>,
jay vaughan <jvaughan5.nospam@gmail.com> wrote:

>I would like to create a plot with a markersize between 1 
>and 2 but notice that the markersize only seems to adopt 
>integer values even if I request noninteger values. Does 
>anyone know how this works? Is there a way to get 
>the 'inbetween' values I am looking for?

The R2007a documentation does not establish any evidence that the
MarkerSize property can be anything other than integral -- nor does
it establish any evidence that it cannot be integral.

Through experimentation with a 'p' (pentagon) marker, I find
that the marker visibly changes size at 12.8, 14.4, 16.0
(tested by 0.1 increments.)

From this I conclude that non-integral marker sizes -are- supported,
but because markers have to be drawn in terms of specific pixel
patterns, it can take relatively large changes in the MarkerSize for
there to be a visible difference.
-- 
  "The human mind is so strangely capricious, that, when freed from
  the pressure of real misery, it becomes open and sensitive to the
  ideal apprehension of ideal calamities."          -- Sir Walter Scott