LaTeX Forum

\documentclass[a4paper,12pt]{scrreprt}
\usepackage[english,ngerman]{babel}	
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}	

\usepackage{pgfplots}				
\pgfplotsset{compat=1.12}

\usepgfplotslibrary{external}
\tikzexternalize

\begin{document}

\begin{tikzpicture}
	\begin{axis}[stack plots=y,stack dir=minus,every axis plot/.append style=very thick]
		\addplot coordinates {(0,1) (0.5,1) (1,1)};
		\addplot coordinates {(0,1) (0.5,1) (1,1)};
		\addplot coordinates {(0,1) (0.5,1) (1,1)};
	\end{axis}
\end{tikzpicture}

\end{document}

pdflatex --shell-escape test.tex

"/Library/TeX/texbin/pdflatex" -synctex=1 -interaction=nonstopmode %.tex

"/Library/TeX/texbin/pdflatex" -synctex=1 -interaction=nonstopmode --shell-escape %.tex

! Package tikz Error: Sorry, the system call 'pdflatex -shell-escape -halt-on-e
rror -interaction=batchmode -jobname "test-figure0" "\def\tikzexternalrealjob{t
est}\input{test}"' did NOT result in a usable output file 'test-figure0' (expec
ted one of .pdf:.jpg:.jpeg:.png:). Please verify that you have enabled system c
alls. For pdflatex, this is 'pdflatex -shell-escape'. Sometimes it is also name
d 'write 18' or something like that. Or maybe the command simply failed? Error
messages can be found in 'test-figure0.log'. If you continue now, I'll try to t
ypeset the picture.
See the tikz package documentation for explanation.