Meaning of samples and isosamples with pm3d hidden3d?

[Philipp K. J. <ja...@ie...>]

When using 
	set pm3d hidden3d
with splot for plotting a function

it seems as if 
- set samples n 
	is used for the number of steps along the x-direction
- set isosamples n,m
	uses m for the number of steps along the y-direction
	and ignores n. If only a single argument is given, it is
	used for the y-direction.

Is this intended behaviour? I would have expected
set samples to have no effect on the plot. I also
would expect both arguments to set isosamples to
be evaluated.

This behaviour is only apparent if previously an
unset hidden3d command has been issued - otherwise
all seems fine.

Very mysterious.

Best,

		Ph.




        G N U P L O T
        Version 4.2 patchlevel 2 
        last modified 31 Aug 2007
        System: Linux 2.6.18.2-34-default

        Copyright (C) 1986 - 1993, 1998, 2004, 2007
        Thomas Williams, Colin Kelley and many others

        Type `help` to access the on-line reference manual.
        The gnuplot FAQ is available from http://www.gnuplot.info/faq/

        Send bug reports and suggestions to 
<http://sourceforge.net/projects/gnuplot>

Compile options:
-READLINE  +LIBREADLINE  +HISTORY  +BACKWARDS_COMPATIBILITY  +BINARY_DATA  
+GD_PNG  +GD_JPEG  +GD_TTF  +GD_GIF  +ANIMATION  
-NOCWDRC  +X11  +X11_POLYGON  +MULTIBYTE  +USE_MOUSE  +HIDDEN3D_QUADTREE  
+DATASTRINGS  +HISTOGRAMS  +OBJECTS  +STRINGVARS  +MACROS  +IMAGE