[pstricks] direction of vector valued function
Hamed Al-Sulami
hhaalsalmi at kau.edu.sa
Wed Apr 22 09:58:15 CEST 2009
Is there a way to draw an arrows on the graph of vector valued function
To indicate the curves orientation batter than the one of doing in the
following example.
\documentclass[a4paper]{article}
\usepackage[margin=1cm]{geometry}
\usepackage{pst-solides3d,bm}
\usepackage{pstricks}
\usepackage{pstricks-add}
\pagestyle{empty}
\definecolor{APBcreme}{rgb}{0.91,0.73,0.54}
\definecolor{APBdarkgreen}{rgb}{0.00,0.33,0.28}
\definecolor{APBoceanblue}{rgb}{0.00,0.20,0.74}
\begin{document}
\psset{unit=0.7}
\begin{pspicture}(-10,-2)(8,8)
\psset[pst-solides3d]{viewpoint=10 10 10,Decran=30,lightsrc=20 20 -20}
\psset{solidmemory}
\defFunction[algebraic,arrows=->]{fu}(t){sin(t)/t}{(1-t)^(1/2)}{t}
\psSolid[object=courbe,
range=-2 1,
r=0,
ngrid=150 8,
linewidth=2\pslinewidth,
linecolor=blue!40,
opacity=.6,
fillcolor=blue,
function=fu]
\psSolid[object=point,
linecolor=gray,
dotstyle=o,
args=1 1 0]
\psSolid[object=vecteur,
linecolor=green,
args=1 1 0]
\psline[linecolor=blue,linewidth=2pt,linestyle=none,ArrowInside=->,ArrowInsi
dePos=0.25]{-}(-.7,.5)(-1,.7)
%\psSolid[object=vecteur,
%linecolor=green,
%args=1 Sin 0 1]
\axesIIID(1,1,1)(2,2.3,2)
\composeSolid
\end{pspicture}
\end{document}
Thanks for your help.
Hamed
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