Re: x11: slow drawing after set xtics font

[Thomas S. <t.s...@fz...>]

'*' as a font name is a disadvantageous choice: the font selection
mechanism of the x-server searches through all the fonts to find
one which matches the name (there is a speed difference between
specifying '*' and the name of a non existent font) and has the
selected font size - in the normal x-server installation first the
bitmapped fonts are searched then the scalable.

you can see this by specifying different font sizes: different
fonts (sometimes even none) are selected.

to make the plot fast select the name of a font which exists.


Petr Mikulik wrote:
> 
> Gnuplot x11 drawings in Octave 3.2 appear displayed much slower than it is 
> usual. This slow-down can be reproduced in gnuplot by e.g.:
> 
> 
> set terminal x11 close
> test
> 
> set terminal x11 close
> set title "Hello world" font "*,12" # no effect to speed
> set xtics font "*,12"	# makes slow drawing
> 
> plot sin(x)/x
> 
> 
> This slow-down is caused by
> 	set xtics font "*,12" 
> while the font specification in "set title" does not slow gnuplot down.
> 
> Note that using "set terminal wxt" does change its speed after the font 
> command.
> 
> What can be the reason? Could the speed be improved?
> The delay of replotting is rather boring when working with Octave on a 
> laptop running on battery :-(
> 
> ---
> PM
> 
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