Loop into parametric plot or splot

[Brouard N. <br...@in...>]

Hi,
I have been subscribed to gnuplot-dev some years ago and you could find
my name in old archives concerning a patch on logscale (if I remember
well).

I am back to your gnuplot-beta list, because I discovered your new gif
animated function in 4.2 and 4.3 (I made a Mandriva rpm of your latest
snapshot for my own use but I will submit it to Cooker soon if you don't
see any objection).

You can have a look at the animations that I did for Wikipedia at
http://commons.wikimedia.org/wiki/Image:Foucault-anim.gif but also at
http://commons.wikimedia.org/wiki/Image:Foucault-rotz.gif . You can get
the gnuplot sources in the description of theses pages. Any hint to
improve the drawings? 

Also the mathematics are in fr.wikipedia.org/wiki/Pendule_de_Foucault
but the size of the second drawing is too big (for the memory of
commons, see http://bugzilla.wikimedia.org/show_bug.cgi?id=2888) and
can't be processed easily. Another Wikipedian used Gimp in order to
decrease the size of it and got a thumb, but now I uploaded a newer
version and the thumb can't get through. Any hint to play with lower
number of colors and reduced indexed colors.

Trying to still improve the drawings I tested your for loop, but in
parametrics mode something like:
   plot [t=0:2.*pi] for[i=0:2] sin(t+i),t
will give strange results (not stupid result) and something like
   plot [t=0:2.*pi] for[i=1:2] sin(t+i),t
outputs a warning
  parametric function not fully specified

Many thanks for any answer.

Nicolas