On 2007-09-17 00:17-0400 Hazen Babcock wrote:

> Now it is my turn to apologize for all the noise. As you originally 
> suspected, I was not calculating the transformation matrix correctly in 
> plptex3 and in plmtex3. This should be fixed now in v7869 and was tested with 
> the xwin and xcairo drivers.

Hi Hazen:

Revision 7869 is much better.  I was particularly gratified that your core
fixes seemed to uniformly improve the results for all the non-cairo devices.

With this revision I noticed there are still two issues for -dev psc and one
issue (newly introduced?) for -dev pscairo.

I prefer PostScript comparisons because the better fonts for -dev psc
compared to -dev xwin make comparisons with -dev psc results much clearer.
However, I confirmed the problems below also for -dev xwin (two issues like
for -dev psc) and -dev xcairo (one issue like for -dev pscairo).

(1) The size of the "a" series as the series progresses becomes much too
large for -dev psc but looks reasonable for -dev pscairo.  (This reminds me
of the pscairo issue we used to have with size for the 3D numerical tick
mark labels.)

(2) The size of the "six" and "four" become too large as the azimuth
approaches 90+270 (e.g., try it for 80+270) for -dev psc but not -dev pscairo.
(Again, this reminds me of the pscairo issue we used to have with size for the
3D numerical tick mark labels.)

(3) The angle of the numerical labels for the tick marks for the right-hand
Z axis and the Y axis appear to be twisted from being parallel with the Z
axis for -dev pscairo but not for -dev psc. This effect is small but
probably most obvious for an azimuth of 80+270.  I believe this effect used
to be in -dev psc, but now due to your core changes it has been "moved" to
-dev pscairo. I suspect this is due to some minor inconsistency in
interpretation between core and the traditional devices that was removed by
your last core change but also introduced to the cairo devices by that same
core change.

Let me know if you need screenshots of these three issues.

Alan
__________________________
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state implementation
for stellar interiors (freeeos.sf.net); PLplot scientific plotting software
package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of
Linux Links project (loll.sf.net); and the Linux Brochure Project
(lbproject.sf.net).
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