Graphics, Figures & Tables ⇒ tikZ | Plotting Problem

[johnnydarten]

Hi all, I have a problem with Texmaker. I tried to plot numbers in a file (CaseA.dat) using the code below and it worked fine except that y-axis data points were plotted very close from each other.

Code: Select all

\documentclass[10pt]{article}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{tikz}
\usepackage[left=4.5cm,right=4.5cm,top=4cm,bottom=4cm]{geometry}
\begin{document}
\pagestyle{empty}

\begin{center}
\makebox[0pt][c]{\begin{tikzpicture}[x=0.28cm,y=3cm]

\def\xmin{0}
\def\xmax{31}
\def\ymin{0.5}
\def\ymax{3.6}


\draw[thick,->] (0,0.5) -- (33,0.5) node [right] {$Freq(GHz)$};
\draw[thick,->] (0,0.5) -- (0,3.8)node [right] {$S11$};

\foreach \s/\x in {0/30, 5/35, 10/40, 15/45, 20/50, 25/55, 30/60}
{
\draw[thick,shift={(\x,0)}] (-239pt,39pt) -- (-239pt,45pt) node [below=10pt] {$\x$};
}
\foreach \n/\y in {0.5/0.62, 1/0.63, 1.5/0.64, 2/0.65, 2.5/0.66, 3/0.67, 3.5/0.68}
{
\draw[thick,shift={(0,\n)}] (3pt,0pt) --(-3pt,0pt) node [left=5pt]{$\y$};
}


\draw[thick,color=blue] plot[smooth] file {CaseA.dat}; 

\draw[style=help lines, ystep=0.5, xstep=5] (\xmin,\ymin) grid
(\xmax,\ymax);

\end{tikzpicture}
}
\end{center}

\end{document}

After that I added "yscale=50" to the line at which I import data from my file so that it becomes:

Code: Select all

\draw[thick,color=blue, yscale=50] plot[smooth] file {CaseA.dat};

In this case the code compiles but everything disappears except my desired plot (grid,axes,... all disappear)..I just want this scaled drawing to appear on my grid...Can somebody help? My data file is attached

Thanks and waiting for reply

[localghost]

Your problem is not related to TeXmaker at all. And there is a much smarter way by the pgfplots package to generate plots.

Code: Select all

\documentclass{minimal}
\usepackage{pgfplots}

\begin{document}
  \begin{tikzpicture}
    \begin{axis}[%
      grid=major,
      xmin=0,xmax=30,ymin=0.62,ymax=0.68,
      xlabel={Frequency / GHz},
      ylabel={S11},
      xlabel near ticks,
      ylabel near ticks
    ]
      \addplot[smooth,blue] table {CaseA.dat};
    \end{axis}
  \end{tikzpicture}
\end{document}

For further customization refer to the package manual.


Thorsten

[johnnydarten]

Thanks