# [Tex/LaTex] pgfplots: how to make the axis thick

pgfplots

I can't make the axis thick and with an arrow.
This is my code:

\begin{tikzpicture}[xscale=0.8,yscale=0.8]
\begin{axis}[axis line style = thick, domain=0:1, samples=50, axis lines*=middle, xtick={0,1},ytick=\empty,yticklabels={}]
\end{axis}
\end{tikzpicture}


The arrow head disappears because your are using the option axis lines*=middle. Instead of this, you could do axis lines=middle,enlargelimits=true as in my example below.

The lines are already thick in your example. If the comments below your code do not help, you will have to show us a compilable MWE of your situation.

% arara: pdflatex

\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=1.13}

\begin{document}
\begin{tikzpicture}[scale=0.8]
\begin{axis}[%
,axis line style = thick
,domain=0:1
,samples=50
,axis lines=middle
,enlargelimits=true
,xtick={0,1},ytick=\empty
,yticklabels={}
]