LaTeX forum ⇒ Graphics, Figures & Tables ⇒ draw irregular circle in tikz

[Mohsen Avaji]

Hi
How to draw figure of attach file

irregular.png (3.21 KiB) Viewed 1315 times

in LaTeX by Tikz?

Thank you.

[rais]

like this?

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

\documentclass[tikz]{standalone}
\usetikzlibrary{decorations.pathmorphing}
\begin{document}
\begin{tikzpicture}
\fill (0,0) circle [radius=1pt] node  [below right] {$z_0$};
\draw [blue!75!black, very thick, decorate, decoration={random steps}]  (0,0) circle [radius=3cm] ;
\draw[red!50!black, decorate, decoration={bumps, segment length=2cm, amplitude=2pt}] (0,0) -- (30:3);
\draw[green!50!black, decorate, decoration={bumps, segment length=2cm, amplitude=2pt}] (0,0) -- (150:3);
\draw[blue!50!black, decorate, decoration={bumps, segment length=2cm, amplitude=2pt}] (0,0) -- (270:3);
\end{tikzpicture}
\end{document}

KR
Rainer

[Mohsen Avaji]

Dear Kr Rainer
Thank you for your help and suggestion, in visual tikz I found some beautiful picture
but non of them they were not similar to the attached figure.

Is there another way to draw this figure?

Best wishes for you.

[rais]

in visual tikz I found some beautiful picture
but non of them they were not similar to the attached figure.

does this mean you did not try the code I provided?
Yes, it's not matching your figure 100%, but I fail to see a point in trying to achieve that, unless this `irregular' is something else than `freehand' and follows some rules---rules, I have yet to see.
And, of course, feel free to tweak some of the parameters like `amplitude', `segment length', and the decoration itself.
Have a look into the tikz-manual, too, especially `path morphing' and `decorations'.

BTW: `KR' stands for `Kind Regards' (I must confess I'm lazy at times;-)

KR
Rainer

[Mohsen Avaji]

Dear Rainer
Thank your for your reply and help.
Before I ask my question on this site, I had seen Tikz-manual.
I saw your code and checked it, but it wasn't what I wanted.
I found the answer of my question.

Thanks again.

[Mohsen Avaji]

Hi
In the following code, how can thickness the circle and its radius?
Thank you.

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

\begin{tikzpicture}
\begin{scope}[>=latex]
\draw (2,0.8) node{$a(z-z_{0})F(z)$};
\draw[->] (1.2,0.2) to [out=30, in=150] (2.2,0.2) ; 
 \draw[clip] plot[smooth cycle,variable=\t,samples at={0,45,...,315}] (\t:{1*(1+0.1*rnd)});
 \foreach \X [count=\Y starting from 0] in {red,blue,green!70!black}
 {\draw[\X] plot[smooth,variable=\t,samples at={0,0.25,...,1.75}] 
 ({15+6*(rnd)+120*\Y}:\t);
 }
 \end{scope}
\end{tikzpicture}

[Stefan Kottwitz]

You can add a line width option, such as:

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

\begin{scope}[>=latex, line width=1pt]

Stefan

[rais]

In this case you could omit the {scope} environment completely and apply its options directly to the {tikzpicture} environment.
Instead of `line width=...', you could also use any of the predefined line widths, such as `thick', 'very thick', and the like.
If you want to have different line widths for the circle and its radii, e.g., to subdue the radii, you could put such a line width option into the options for \draw, like
\draw[very thin, \X]

KR
Rainer