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-
-
-\subsection{Closing Plots (Filling the Area Under Plots)}
-\begin{command}{\closedcycle}
- Provide |\closedcycle| as \meta{trailing path commands} after |\addplot| to draw a closed line from the last plot coordinate to the first one.
-
- Use |\closedcycle| whenever you intend to fill the area under a plot.
-
-\begin{codeexample}[]
-\begin{tikzpicture}
- \begin{axis}
- \addplot {x^2+2} \closedcycle;
- \end{axis}
-\end{tikzpicture}
-\end{codeexample}
-
-\begin{codeexample}[]
-\begin{tikzpicture}
- \begin{axis}
- \addplot+[fill] {x^2+2} \closedcycle;
- \end{axis}
-\end{tikzpicture}
-\end{codeexample}
- In case of stacked plots, |\closedcycle| connects the current plot with the previous plot instead of connecting with the $x$~axis\footnote{The implementation for stacked plots requires some additional logic to determine the filled area: \lstinline{\\closedcycle} will produce a \texttt{plot coordinates} command with \emph{reversed} coordinates of the previous plot. This is usually irrelevant for end users, but it assumes that the plot's type is symmetric. Since constant plots are inherently asymmetric, \lstinline{\\closedcycle} will use \texttt{const plot mark right} as reversed sequence for \texttt{const plot mark left}.}.
-\begin{codeexample}[]
-\begin{tikzpicture}
- \begin{axis}[stack plots=y]
- \addplot+[fill] coordinates
- {(0,1) (1,1) (2,2) (3,2)} \closedcycle;
- \addplot+[fill] coordinates
- {(0,1) (1,1) (2,2) (3,2)} \closedcycle;
- \end{axis}
-\end{tikzpicture}
-\end{codeexample}
-\end{command}
-
-Note that |\closedcycle| has been designed for functions (i.e.\ for a plot where every $x$ has at most one $y$ value). For arbitrary curves, you can safely use the \tikzname\ path \declareandlabel{--cycle} instead which simply connects the last and the first path element:
-\begin{codeexample}[]
-\begin{tikzpicture}
- \begin{axis}
- \addplot coordinates
- {(0,1) (1,2) (0,3) (-1,2)};
- \end{axis}
-\end{tikzpicture}
-\end{codeexample}
-
-\begin{codeexample}[]
-\begin{tikzpicture}
- \begin{axis}
- \addplot coordinates
- {(0,1) (1,2) (0,3) (-1,2)} --cycle;
- \end{axis}
-\end{tikzpicture}
-\end{codeexample}
-
-\begin{codeexample}[]
-\begin{tikzpicture}
- \begin{axis}
- \addplot+[fill] coordinates
- {(0,1) (1,2) (0,3) (-1,2)} --cycle;
- \end{axis}
-\end{tikzpicture}
-\end{codeexample}
-The |--cycle| is actually a path instruction of \cite{tikz}; it connects the first and the last coordinate of one path. Note that this is automatically done for |fill|ed paths.