LaTeX Forum

Lies mal Abschnitt 4.5.4 der Anleitung von »[url=https://ctan.org/pkg/pgfplots]pgfplots[/url]« (abrufbar auf der Kommandoteile mit »[url=https://ctan.org/pkg/texdoc]texdoc[/url]«). Das Schlüsselwort ist '[tt]bar width[/tt]'.

\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=1.18}

\begin{document}
	
	% Predefined lists for wavelength data and electron data
	\def\wavelengths{{800,850,900,950,1000,1050,1100,1150,1200,1250,1300,1350,1400,1450,1500,1550,1600}}
	\def\electrondata{{5000,5500,6000,6500,7000,7500,8000,8500,9000,9500,10000,10500,11000,11500,12000,12500,13000}}
	
	% Define the list of bar widths
	\def\cwlaccuracies{{10,20,30,20,15,7.5,7.5,10,15,6,6,15,10,15}}
	
	% Get the number of rows in the wavelength data
	\pgfmathsetmacro{\numrows}{14} % Number of rows is known beforehand
	
	% Define the dark current value
	\pgfmathsetmacro{\darkcurrent}{1000} % Example value
	
	\begin{figure}
		\centering
		\begin{tikzpicture}
			\begin{axis}[
				xlabel={Wavelength (nm)},
				ylabel={Electrons},
				legend style={at={(0.5,-0.15)},anchor=north},
				width=0.8\textwidth, % Adjust width as needed
				height=8cm, % Adjust height as needed
				ymin=0, % Default minimum value for the y-axis
				ymax=50000, % Default maximum value for the y-axis
				xmin=700, % Default minimum value for the x-axis
				xmax=1600, % Default maximum value for the x-axis
				]
				
				% Plot the green bars representing electrons
				\pgfplotsinvokeforeach{0,...,\numrows-1}{
					\pgfmathsetmacro{\currentcwl}{\wavelengths[#1]}
					\pgfmathsetmacro{\currentelectrons}{\electrondata[#1]}
					\pgfmathsetmacro{\currentcwlaccuracy}{\cwlaccuracies[#1]}
					\addplot [ybar, green, fill, opacity=0.5, bar width={\currentcwlaccuracy}] coordinates {(\currentcwl,\currentelectrons+\darkcurrent)};
				}
				
			\end{axis}
		\end{tikzpicture}
	\end{figure}
	
\end{document}

Moin,

ich möchte ein Diagramm mit Latex darstellen, dass veschiedene Balken mit unterschiedlichen breiten darstellt. Leider wird jeder Balken immer mit der letzten benutzten Breite verwendet.

[code]
\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=1.18}

\begin{document}

% Predefined lists for wavelength data and electron data
\def\wavelengths{{800,850,900,950,1000,1050,1100,1150,1200,1250,1300,1350,1400,1450,1500,1550,1600}}
\def\electrondata{{5000,5500,6000,6500,7000,7500,8000,8500,9000,9500,10000,10500,11000,11500,12000,12500,13000}}

% Define the list of bar widths
\def\cwlaccuracies{{10,20,30,20,15,7.5,7.5,10,15,6,6,15,10,15}}

% Get the number of rows in the wavelength data
\pgfmathsetmacro{\numrows}{14} % Number of rows is known beforehand

% Define the dark current value
\pgfmathsetmacro{\darkcurrent}{1000} % Example value

\begin{figure}
\centering
\begin{tikzpicture}
\begin{axis}[
xlabel={Wavelength (nm)},
ylabel={Electrons},
legend style={at={(0.5,-0.15)},anchor=north},
width=0.8\textwidth, % Adjust width as needed
height=8cm, % Adjust height as needed
ymin=0, % Default minimum value for the y-axis
ymax=50000, % Default maximum value for the y-axis
xmin=700, % Default minimum value for the x-axis
xmax=1600, % Default maximum value for the x-axis
]

% Plot the green bars representing electrons
\pgfplotsinvokeforeach{0,...,\numrows-1}{
\pgfmathsetmacro{\currentcwl}{\wavelengths[#1]}
\pgfmathsetmacro{\currentelectrons}{\electrondata[#1]}
\pgfmathsetmacro{\currentcwlaccuracy}{\cwlaccuracies[#1]}
\addplot [ybar, green, fill, opacity=0.5, bar width={\currentcwlaccuracy}] coordinates {(\currentcwl,\currentelectrons+\darkcurrent)};
}

\end{axis}
\end{tikzpicture}
\end{figure}

\end{document}

[/code]

Eine Ahnung, wie man das Problem lösen könnte?

Vielen Dank im voraus!
Zonked