Kdjykuj

I'm currently in the middle of moving a large Latex document from one layout to another. I have problems with this tikzpicture figure, which does not appear in the final PDF even though Latex compiles without any issues:

% **************************************************

documentclass[

    paper=A4,               % paper size

    twoside=true,           % onesite or twoside printing

    openright,              % doublepage cleaning ends up right side

    parskip=full,           % spacing value / method for paragraphs

    chapterprefix=true,     % prefix for chapter marks

    11pt,                   % font size

    headings=normal,        % size of headings

    bibliography=totoc,     % include bib in toc

    listof=totoc,           % include listof entries in toc

    titlepage=on,           % own page for each title page

    captions=tableabove,    % display table captions above the float env

    draft=false,            % value for draft version

]{scrreprt}



usepackage{colortbl}

usepackage[most]{tcolorbox}

usepackage{tikz}

usetikzlibrary{arrows.meta,shapes,decorations,automata,backgrounds,petri,topaths,calc,mindmap,trees,positioning,chains,arrows}

usepackage{relsize}

usepackage{pgfplots}

pgfplotsset{compat=1.14}

usepackage{algorithm2e}

usepackage{amssymb}

usepackage{float}

usepackage{multirow}

usepackage{pbox}

usepackage[page,toc,titletoc,title]{appendix}



% Gaussian plot with #1 = mean and #2 = standard deviation

pgfmathdeclarefunction{gauss}{2}{

    pgfmathparse{1/(#2*sqrt(2*pi))*exp(-((x-#1)^2)/(2*#2^2))} 

}



begin{document}



textbf{MWE} \

Here we go...

begin{figure}[!htb]

    begin{tikzpicture}

    begin{axis}[every axis plot post/.append style={mark=none,domain=-10:10,samples=100,smooth},

    enlargelimits=upper,legend style={at={(1.02,0.825)},anchor=west}] % extend the axes a bit to the right and top

    addplot [line width=0.25mm, red,dotted] {gauss(0,1)};

    addplot [line width=0.25mm, blue,dashed] {gauss(0,2)};

    addplot [line width=0.25mm, green] {gauss(1,1)};

    addplot [line width=0.25mm, orange,dashdotted] {gauss(1,2)};



    addlegendentry{Gaussian with $mu = 0$ and $sigma = 1$}

    addlegendentry{Gaussian with $mu = 0$ and $sigma = 2$}

    addlegendentry{Gaussian with $mu = 1$ and $sigma = 1$}

    addlegendentry{Gaussian with $mu = 1$ and $sigma = 2$}

    end{axis}

    end{tikzpicture}

    caption{My label} label{fig:MyLabel}

end{figure}



end{document}

The problem are missing % at the line ending of the function definition. The unprotected line endings are interpreted as spaces and each time you use the function in addplot additional white space is inserted and the plots are pushed off the right boarder of the page

% **************************************************

documentclass[

    paper=A4,               % paper size

    twoside=true,           % onesite or twoside printing

    openright,              % doublepage cleaning ends up right side

    parskip=full,           % spacing value / method for paragraphs

    chapterprefix=true,     % prefix for chapter marks

    11pt,                   % font size

    headings=normal,        % size of headings

    bibliography=totoc,     % include bib in toc

    listof=totoc,           % include listof entries in toc

    titlepage=on,           % own page for each title page

    captions=tableabove,    % display table captions above the float env

    draft=false,            % value for draft version

]{scrreprt}



usepackage{colortbl}

usepackage[most]{tcolorbox}

usepackage{tikz}

usetikzlibrary{arrows.meta,shapes,decorations,automata,backgrounds,petri,topaths,calc,mindmap,trees,positioning,chains,arrows}

usepackage{relsize}

usepackage{pgfplots}

pgfplotsset{compat=1.14}

usepackage{algorithm2e}

usepackage{amssymb}

usepackage{float}

usepackage{multirow}

usepackage{pbox}

usepackage[page,toc,titletoc,title]{appendix}



% Gaussian plot with #1 = mean and #2 = standard deviation

pgfmathdeclarefunction{gauss}{2}{%

    pgfmathparse{1/(#2*sqrt(2*pi))*exp(-((x-#1)^2)/(2*#2^2))}%

}



begin{document}



textbf{MWE} \

Here we go...

begin{figure}[!htb]

    begin{tikzpicture}

    begin{axis}[every axis plot post/.append style={mark=none,domain=-10:10,samples=100,smooth},

    enlargelimits=upper,legend style={at={(1.02,0.825)},anchor=west}] % extend the axes a bit to the right and top

    addplot [line width=0.25mm, red,dotted] {gauss(0,1)};

    addplot [line width=0.25mm, blue,dashed] {gauss(0,2)};

    addplot [line width=0.25mm, green] {gauss(1,1)};

    addplot [line width=0.25mm, orange,dashdotted] {gauss(1,2)};



    addlegendentry{Gaussian with $mu = 0$ and $sigma = 1$}

    addlegendentry{Gaussian with $mu = 0$ and $sigma = 2$}

    addlegendentry{Gaussian with $mu = 1$ and $sigma = 1$}

    addlegendentry{Gaussian with $mu = 1$ and $sigma = 2$}

    end{axis}

    end{tikzpicture}

    caption{My label} label{fig:MyLabel}

end{figure}



end{document}