Re: [Plplot-general] Fast/slow plotting

[Maurice L. <mj...@br...>]

On Saturday, January 19, 2008 at 13:53:12 (+0100) Torquil Macdonald S=F8=
rensen writes:
 > The effect of using double-buffering with the xwin driver was that i=
t did not=20
 > plot anything until all the for-loop iterations were finished. Then =
it plotted=20
 > just the last frame. Using the TK driver gives the same result. It a=
lso only=20
 > plots the last frame when using -db.

The xwin driver only plots at end of page if double buffering is on (i.=
e. it
plots to the pixmap and then when done it pops it to the display) so yo=
u need
to do an end of page at the end of each plot.  It's safest in my book t=
o
always use plbop/pleop for individual plots, i.e.:

plbop();
.. plot here ..
pleop();

Indeed, if you change the plot lines in your for loop to:

        plbop();=20
        plbox("bcinst", 0, 0, "bcinst", 0, 0);=20
        plline(2, x, y);=20
        pleop();=20

and then invoke with both the -db and -np option, it animates cleanly
with the xwin driver.

--=20
Maurice LeBrun