LaTeX forum ⇒ Graphics, Figures & Tables ⇒ pgfplots | Proper Decoration Coils

[thinkpadT]

hi everyone,

for the plotted curve, there is the need of the sinusoidal grating profile on the plot. For this purpose decoration is used. But the result is not satisfactory because i could not manage to get rid of the tail and expand/change the distance between the crests and troughs d.

Code: [Select all] [Expand/Collapse] [Download] (untitled.tex)

\documentclass{standalone}
\usepackage[bitstream-charter]{mathdesign} %for a much better readable font
\usepackage{pgfplots}
\usepackage{tikz}
\pgfplotsset{compat=newest}
\usetikzlibrary{positioning} 
\usetikzlibrary{%
   decorations.pathreplacing,%
   decorations.pathmorphing%
}
\begin{document}
   \begin{tikzpicture}
     \begin{axis} [
       xlabel=$\lambda/h$, %$\lambda $ \lbrack $ nm $\rbrack 
       xtick={1,2,...,11},
       ylabel=Efficiency,
       ymax=1,
       ymin=0,
       mark=none,
       legend style={
         legend pos=north east,
         font=\tiny,
         draw=none
       } % place the legend box in the right place  at ={(0.85, 0.65)}
     ]
       \pgfplotstableread{uni-holographic-eff.txt} 
       \teff      %effs=efficiencies
       \addplot [color = blue, mark=none, smooth, very thick] table[y=one] from \teff;
       \addlegendentry{Universal Efficiency Curve of Holographic Grating};
       \draw[decorate,decoration={coil,aspect=0,amplitude=10}] (axis cs:2,0.7) -- (axis cs:3.5,0.7);
     \end{axis}
   \end{tikzpicture}
\end{document}

Till now i have only found "hacks" on how to manipulate coils; are there a direct method available too?


Thanks in advance
-Fawad

[localghost]

You could replace the drawn coil by a plot command like this.

Code: [Select all] [Expand/Collapse] [Download] (untitled.tex)

\addplot[domain=2:3.62,samples=50] {0.05*sin(10*deg(x)-80)+0.7};

The parameters are the result of some fiddling.


Thorsten

[Jamesraw]

Wow, you guys are genius! Indeed, the result always depends on good handling.