The discussion focuses on creating a counterclockwise annulus using TikZ in LaTeX, specifically from a radius of delta to R on the positive x-axis and back. Users are encouraged to adjust the \newcommand definitions for delta and R to modify the width of the annulus. The conversation highlights the use of TikZ libraries such as arrows and decorations.markings for enhanced visual representation. Additionally, there is a preference expressed for using Corel Draw for image creation over LaTeX due to its superior output capabilities.
PREREQUISITESGraphic designers, LaTeX users, and anyone interested in creating complex graphics or visual representations in academic or professional settings.
\usetikzlibrary{arrows,decorations.markings}
\begin{tikzpicture}[>=stealth']
\newcommand\delt{1.5}
\newcommand\R{2}
\draw[->] (-3,0) -- (3,0);
\draw[->] (0,-1) -- (0,3);
\node[below] at (\R,0) {$R$};
\node[below] at (\delt,0) {$\delta$};
\draw[
thick,
decoration={
markings,
mark=at position 2cm with {\arrow{>}},
mark=at position 8cm with {\arrow{>}}},
postaction={decorate}]
(\R,0) arc[start angle=0,end angle=180,radius=\R] --
(-\delt,0) arc[start angle=180,end angle=0,radius=\delt] -- cycle;
\end{tikzpicture}Evgeny.Makarov said:Like this?
Code:\usetikzlibrary{arrows,decorations.markings} \begin{tikzpicture}[>=stealth'] \newcommand\delt{1.5} \newcommand\R{2} \draw[->] (-3,0) -- (3,0); \draw[->] (0,-1) -- (0,3); \node[below] at (\R,0) {$R$}; \node[below] at (\delt,0) {$\delta$}; \draw[ thick, decoration={ markings, mark=at position 2cm with {\arrow{>}}, mark=at position 8cm with {\arrow{>}}}, postaction={decorate}] (\R,0) arc[start angle=0,end angle=180,radius=\R] -- (-\delt,0) arc[start angle=180,end angle=0,radius=\delt] -- cycle; \end{tikzpicture}