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I'm trying to plot a std normal distribution filled to a certain point $z_\alpha$, the problem is that \tkzPointShowCoord label doesn't appear in the plot, the following is the code i used:

\newcommand\gauss[2]{1/(sqrt(2*pi*#2))*exp(-((x-#1)^2)/(2*#2))} % normal random variable

\begin{tikzpicture}[scale=0.7]
\begin{axis}[every axis plot post/.append style={
  mark=none,domain=-3:3,samples=50,smooth, very thick}, 
axis x line=bottom, % no box around the plot, only x and y axis
axis y line=left, % the * suppresses the arrow tips
enlargelimits=upper, 
legend style={draw=none, nodes={scale =.8}, at={(1.7,1.2)}}, 
legend cell align={left}] % extend the axes a bit to the right and top
\addplot[smooth,blue, name path=f]{\gauss{0}{1}};
\path [name path=xaxis]
      (\pgfkeysvalueof{/pgfplots/xmin},0) --
      (\pgfkeysvalueof{/pgfplots/xmax},0);
\addplot[red!10, opacity=0.8] fill between [of=f and xaxis, soft clip={domain=-5:1}];
\tkzDefPoint(1,.2419){L}
\tkzPointShowCoordnoydraw=true, xlabel=$z_\alpha$
\legend{$\mu =0~ \sigma^2 = 1$}
\end{axis}
\end{tikzpicture}

Thanks in advance for any help

Walid Abdellatif
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  • You don't need tkz-euclide to do this. This package concerns Euclidean geometry. and with tkz-euclide 4 you can't do this. You need to use pgfplots or perhapstikz. I don't know how to use `pgfplots' but the problem here is to find the units used by 'pgfplots'. – Alain Matthes Jan 06 '22 at 22:29

1 Answers1

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I found the answer in another post Hidden or Misplaced Node Labels when using Tikz Graphics Package

basically I had to add the label using \node and add clip=false in the style section.

Walid Abdellatif
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