[pstricks] drawing arrows

Zbigniew Nitecki zbigniew.nitecki at tufts.edu
Wed Jan 7 22:37:49 CET 2009


Thanks!  (One of these days I'll figure out the syntax of "1" or not  
to "1"  :-)

Zbigniew Nitecki
Department of Mathematics
Tufts University
Medford, MA 02155

telephones:
Office    (617)627-3843
Dept.    (617)627-3234
Dept. fax    (617)627-3966
http://www.tufts.edu/~znitecki/

On Jan 7, 2009, at 15:15, Herbert Voss wrote:

> Zbigniew Nitecki schrieb:
>> I am not sure what is wrong with the following code;  I am drawing  
>> the
>> surface z=xy over the square [0,1]\times[0,1] (this works fine, if  
>> the
>> multido is commented out) and then to draw
>> unit normal vectors to this surface.
>> ***********************************************************************
>> %!TEX TS-program =  latex
>> \documentclass[11pt]{article}
>> \usepackage{amsmath, amssymb}
>> \usepackage[dvipsnames, svgnames]{pstricks}
>> \usepackage{pst-plot, pst-math, pst-3dplot}
>> \usepackage{pst-grad, pst-func, pst-text}
>> \usepackage{pstricks-add}
>> \title{Brief Article}
>> \author{The Author}
>> \begin{document}
>> \maketitle
>> \begin{figure}[htbp]
>> \begin{center}
>>    \begin{pspicture}(-3.5,-3)(3.5,3.5)
>>    \psset{Alpha=-30, unit=3}
>>        \pstThreeDCoor[xMin=0, xMax=1.5, yMin=0, yMax=1.5, zMin=0,  
>> zMax=2]
>>        \pstThreeDSquare[fillstyle=solid, fillcolor=gray,
>> linestyle=none](0,0,0)(1,0,0)(0,1,0)
>>        \psplotThreeD[xPlotpoints=10, yPlotpoints=10,
>> drawStyle=xyLines](0,1)(0,1){x y mul}
>>
>>        \newcommand{\veclength}[3]{%
>>            #1 dup mul #2 dup mul #3 dup mul add add 0.5 exp
>>        }
>>    \newcommand{\makevector}[3]{%
>>        \pstThreeDLine[arrows=->, arrowscale=2,
>> linewidth=2pt](0,0,0)(#1,#2,#3)%
>>        }
>>
>>        \multido{\rx=0+0.1}{10}{%
>>            \multido{\ry=0+0.1}{10}{%
>>                \pstThreeDPut(!\rx, \ry, \rx\space \ry\space mul){%
>
>                  \pstThreeDPut(\rx, \ry, \rx\space \ry\space mul){%
>
> without the exclamation.
>
> Herbert
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