[Gnuplot-info] How to plot functions smoother?

[stimorol <sa...@go...>]

Hello!

I have a problem. I want to plot the tan(x) function in the same style as it
was done on wikipedia for cos and sin here
http://de.wikipedia.org/w/index.php?title=Datei:Sine_cosine_plot.svg&filetimestamp=20090410200628
http://de.wikipedia.org/w/index.php?title=Datei:Sine_cosine_plot.svg&filetimestamp=20090410200628 

but I have some broblems:
1. My function looks not really smooth and nice as on wikipedia
2. The name of the function, here tan(x), is crossed by the graph of the
function. how can I prevent this automatically?
3. I want to have \frac{\pi}{2},\frac{3 \pi}{2},..  on the x axis in the
LaTex style, but the only thing works is the "poor man" style \pi/2..

here is the code of my picture (+picture):

set term png size 360,245  nocrop enhanced font arial 9
set output "tan.png"
set samples 1000
set grid
unset border
http://www.nabble.com/file/p23575388/tan.png 
set xzeroaxis linetype -1 linewidth 1.5
set yzeroaxis linetype -1 linewidth 1.5

set xtics ("" -2.5*pi,"{/=11 {/Symbol -2p}}" -pi*2,"" -pi*3/2,"{/=11{/Symbol
-p}}" -pi,"" -pi*1/2, "{/=11 0}" 0, "" pi*1/2,"{/=11{/Symbol p}}" pi,""
pi*3/2,"{/=11{/Symbol 2p}}" pi*2, ""  2.5*pi)
set ytics ("{/=11 {/Symbol -10}}" -10,"{/=11 0}" 0,"{/=11 {/Symbol 10}}" 10)

set xrange [-2.5*pi:2.5*pi]
set yrange [-10.:10.]

plot tan(x) lt rgb "blue" lw 2 title "{/=12 tan(x)}" 




hmmm 
during writing this text I realized that the pictute on wikipedia was
created in the .svg format (never heared before), so I created it too and
opened withe the program Inkscape. the lines are now smooth, but the x- and
y- axis disappeared inthe svg-format. problems...:confused:


Last request :blush:
if some knows an easier (better?) open source program for generating good
looking graphs and other mathematical objects PLEASE:handshake: tell

thanks
-- 
View this message in context: http://www.nabble.com/How-to-plot-functions-smoother--tp23575388p23575388.html
Sent from the Gnuplot - User mailing list archive at Nabble.com.