pgfplots equivalent to matplotlibs Secondary Axis

Question

I am looking for a pgfplots equivalent to matplotlibs Secondary Axes https://matplotlib.org/3.1.0/gallery/subplots_axes_and_figures/secondary_axis.html

Answer 1

Update: Found a solution! I used a similar problem and edited it a little. Specify xtick/ytick with multiplication in Pgfplots

Important is, that the xmin and xmax are equal in both axis, and that the y axis direction is reversed.

\documentclass[tikz,border=10pt]{standalone}
\usepackage{tikz}
\usetikzlibrary{arrows, arrows.meta}

\usepackage{pgfplots}

\begin{document}    
\begin{tikzpicture}
    \let\yticklist=\empty% create scaled list
\foreach \y in {105,100, ..., 60}
{
  \pgfmathparse{(1-(1-3.1415/\y)^2)*100} \pgfmathresult
  \pgfmathprintnumberto[precision=2]{\pgfmathresult}{\roundednumber}
  \ifx\empty\yticklist\relax \xdef\yticklist{\roundednumber}%
  \else \xdef\yticklist{\yticklist,\roundednumber}%
  \fi
}
\begin{axis}[%
xmin=44,
xmax=66,
y dir= reverse,
ymin=60,
ymax=105 , 
ytick = {60, 65, ..., 105},
yticklabels/.expanded = {\yticklist},
axis x line=none,
axis y line=right,
y axis line style={-Butt Cap},
ylabel = {loss in \%},
]

\end{axis}

\begin{axis}[%
xmin=44,
xmax=66,
ymin=60,
ymax=105,
ytick = {60, 65, ..., 105},
ylabel={quality},
xlabel={angle in deg},
grid=major,
]
\addplot[red, line width=0.8mm] table{file.txt};
\end{axis}
\end{tikzpicture}

\end{document}