[OS X TeX] TikZ & PGF

[Tim Brophy]

Much appreciated.

Thanks,

Tim


On 3 Mar 2011, at 16:31, Eric DÉTREZ wrote:

> 
> Le 3 mars 2011 à 16:59, Tim Brophy a écrit :
> 
>> Can anyone out there explain why the following code does not work?
> 
> It works fine when you use the symbol for multiplication (parenthesis don't help).
> 
> \documentclass[10pt]{article}
> \usepackage{pgf,tikz}
> \usetikzlibrary{arrows}
> \pagestyle{empty}
> \begin{document}
> \definecolor{ffffff}{rgb}{1,1,1}
> \definecolor{qqqqff}{rgb}{0,0,1}
> \definecolor{ffqqqq}{rgb}{1,0,0}
> \definecolor{zzttqq}{rgb}{0.6,0.2,0}
> \definecolor{ffqqff}{rgb}{1,0,1}
> \begin{tikzpicture}[line cap=round,line join=round,>=triangle 45,x=1.0cm,y=1.0cm]
> \clip(-1.04,-0.62) rectangle (5.72,3.88);
> \fill[color=ffqqff,fill=ffqqff,fill opacity=0.95] (1,1) -- (1.34,0) -- (3.72,0) -- (4,1) -- cycle;
> \draw[color=ffqqqq,fill=ffqqqq,fill opacity=1.0] {[smooth,samples=50,domain=-1.0:2.44] plot(\x,{0-0.05*\x^3+0.04*\x^2-0.68*\x+2.23})} -- (2.44,1) {[smooth,samples=50,domain=2.44:-1.0] -- plot(\x,{0-0.06*\x^3-0.04*\x^2-0.3*\x+2.88})} -- (-1,3) -- cycle;
> %\draw[color=qqqqff,fill=qqqqff,fill opacity=1.0] {[smooth,samples=50,domain=2.7600000000000007:5.08] plot(\x,{0-0.11*\x^4+1.71*\x^3-10.8*\x^2+32.19*\x-35.49})} -- (5.08,3.24) {[smooth,samples=50,domain=5.08:2.7600000000000007] -- plot(\x,{0-0.8*\x^3+9.46*\x^2-34.92*\x+41.63})} -- (2.76,1) -- cycle;
> \fill[color=ffffff,fill=ffffff,fill opacity=1.0] (0,0) -- (5,0) -- (5,1) -- (0,1) -- cycle;
> \draw [color=zzttqq] (1,1)-- (1.34,0);
> \draw [color=zzttqq] (1.34,0)-- (3.72,0);
> \draw [color=zzttqq] (3.72,0)-- (4,1);
> \draw [color=zzttqq] (4,1)-- (1,1);
> \draw[smooth,samples=100,domain=-1.0:1.6600000000000001] plot(\x,{0-0.05*\x^3+0.04*\x^2-0.68*\x+2.23});
> \draw[smooth,samples=100,domain=-1.0:2.44] plot(\x,{0-0.06*\x^3-0.04*\x^2-0.3*\x+2.88});
> \draw[smooth,samples=100,domain=2.7600000000000007:5.08] plot(\x,{0-0.11*\x^4+1.71*\x^3-10.8*\x^2+32.19*\x -35.49});
> \draw[smooth,samples=100,domain=3.54:5.0600000000000005] plot(\x,{0-0.8*\x^3+9.46*\x^2-34.92*\x+41.63});
> \draw [color=ffffff] (0,0)-- (5,0);
> \draw [color=ffffff] (5,0)-- (5,1);
> \draw [color=ffffff] (5,1)-- (0,1);
> \draw [color=ffffff] (0,1)-- (0,0);
> \draw [color=ffqqqq](-0.54,3.68) node[anchor=north west] {$$x$$};
> \draw [color=qqqqff](5.28,3.94) node[anchor=north west] {$$ y $$};
> \draw [color=ffqqff](2.14,0.14) node[anchor=north west] {$$ x+y $$};
> \end{tikzpicture}
> \end{document}
> 
> Eric DÉTREZ
> Maths PC* & Info MP*
> Lycée Faidherbe Lille
> 
> 
> 
> 
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