How do I solve this issue I am having when graphing this CDF?

Question

The graph is not working as intended and I am getting the following error code: ! Package pgfkeys Error: I do not know the key '/tikz/discontinuous' and I am going to ignore it. Perhaps you misspelled it.See the pgfkeys package documentation for explanation.Type H for immediate help.... \end{axis}

My code is below.

\documentclass[]{article}

\usepackage{pgfplotstable}
\usepackage{pgfplots}

\begin{document} 
The C.D.F is as follows:

\[F(x)=
\begin{dcases}
0&\text{$x<1$}\\
\frac{11}{36}&\text{$1\leq x<2$}\\
\frac{20}{36}&\text{$2\leq x<3$}\\
\frac{27}{36}&\text{$3\leq x<4$}\\
\frac{32}{36}&\text{$4\leq x<5$}\\
\frac{35}{36}&\text{$5\leq x<6$}\\
1&\text{$x\geq 6$}\\
\end{dcases}
\]

The C.D.F can be graphed as follows:

{\centering
\begin{tikzpicture}
\begin{axis}[
clip=false,
jump mark left,
ymin=0,ymax=1,
xmin=0, xmax=5,
every axis plot/.style={very thick},
discontinuous,
table/create on use/cumulative distribution/.style={
    create col/expr={\pgfmathaccuma + \thisrow{f(x)}}   
}
]
\addplot [red] table [y=cumulative distribution]{
x f(x)
0 0
1 11/36
2 20/36
3 27/36
4 32/36
5 35/36
6 1
};
\end{axis}
\end{tikzpicture}
\par}
\end{document}

You can also use the site search to find lots of similar questions: https://tex.stackexchange.com/search?tab=votes&q=%5bpgfplots%5d%20piecewise — Henri Menke, Sep 20 '18 at 02:45
@HenriMenke removing that still didn't help. I will check out the post you linked though. Thank you. — Mohammed Shahid, Sep 20 '18 at 02:48
Removing discontinuous (and adding \usepackage{mathtools} for dcases) fixes it for me, by which I mean that it compiles (code, screenshot). Beyond that you have to get more specific about what “The graph is not working as intended” means. Probably you want something more like this: code, screenshot — Henri Menke, Sep 20 '18 at 03:03
@HenriMenke Maybe you want to remove xmin, xmax, ymin and ymax as well to get to get a plot that fits into the axis box. — , Sep 20 '18 at 03:38

score 3 · Accepted Answer · answered Sep 20 '18 at 04:03

Just spelling out what Henri Menke said. I will be happy to remove this answer. Note that there are several things you may consider changing, such as the use of a figure. I removed, as suggested by Henri Menke, discontinuous, which is not a standard style, as well as xmin, xmax, ymin and ymax.

\documentclass[]{article}
\usepackage{amsmath,mathtools}
\usepackage{pgfplotstable}
\usepackage{pgfplots}

\begin{document} 
The C.D.F is as follows:
\[F(x)=
\begin{dcases}
0&\text{$x<1$}\\
\frac{11}{36}&\text{$1\leq x<2$}\\
\frac{20}{36}&\text{$2\leq x<3$}\\
\frac{27}{36}&\text{$3\leq x<4$}\\
\frac{32}{36}&\text{$4\leq x<5$}\\
\frac{35}{36}&\text{$5\leq x<6$}\\
1&\text{$x\geq 6$}\\
\end{dcases}
\]

The C.D.F can be graphed as follows:
\begin{center}
\begin{tikzpicture}
\begin{axis}[
clip=false,
jump mark left,
%ymin=0,ymax=1,
%xmin=0, xmax=5,
every axis plot/.style={very thick},
%discontinuous,
table/create on use/cumulative distribution/.style={
    create col/expr={\pgfmathaccuma + \thisrow{f(x)}}   
}
]
\addplot [red] table [y=cumulative distribution]{
x f(x)
0 0
1 11/36
2 20/36
3 27/36
4 32/36
5 35/36
6 1
};
\end{axis}
\end{tikzpicture}
\end{center}
\end{document}

How do I solve this issue I am having when graphing this CDF?

1 Answers1