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Re: Documenting the plotting system

From: Søren Hauberg
Subject: Re: Documenting the plotting system
Date: Sat, 02 Jun 2007 21:39:40 +0200
User-agent: Thunderbird (X11/20070403)

John W. Eaton skrev:
On 27-May-2007, Søren Hauberg wrote:

| 2) How much can I trust the help text of the functions? Have they been | updated when the graphics handles was introduced?

Since things have changed so much with plotting, I think whatever is
in the help text now should be verified.
Okay, so I'm just starting to look at this. First function to look at is 'plot'...

1) The help text claims that (as an example) 'plot(10, 10)' will plot a single point. Currently this isn't true. Instead a zero-length (and hence non-visible) line is drawn. Is this a bug in the help text or the code?

2) The current help text doesn't mention the "--", ":", and "-." line styles. The code doesn't complain about any of these line styles, but it draws solid lines (and not dashed ones). Should these line styles still be documented?

3) The "<" and ">" marker styles doesn't produce triangles that point to the left or right, but instead they point up or down. Is this a limitation of gnuplot? Anyway, should these marker styles be documented?

4) The "p" (pentagon) and "h" (hexagon) marker styles produces squares and diamonds. I seem to remember gnuplot having a "house" marker style that could be used for pentagon. Anyway, should these marker styles be documented?

5) The "@nm" style doesn't work for me. I can only change the color of the marker this way. The marker style is always "+". Is this a bug, or has that feature been deprecated? Should the "@nm" style still be documented or is too gnuplot specific?


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