I am trying to plot the 3D curve $x=e^(t)*cos(t),y=e^(t)*sin(t),z=e^(t)$, $t\in[0,1]$, by using the code
\documentclass[tikz, border=2mm]{amsbook}
\usepackage{pgfplots}
\pgfplotsset{compat=1.4}
\begin{document}
\begin{figure}[h]
\begin{tikzpicture}
\begin{axis}
[view={60}{30},axis lines=center,axis on top,
xlabel=$x$,ylabel=$y$,zlabel=$z$, xtick={2},ytick={2},ztick={2},no marks,axis equal,xmin=-1,xmax=4,ymin=-1,ymax=4,zmin=-1,zmax=4,enlargelimits={upper=0.1}]
\addplot3+[no markers,samples=200, domain=0:1,variable=t]({exp(t)*cos(t)},{exp(t)*sin(t)},{exp(t)});
\end{axis}
\end{tikzpicture}
\end{figure}
\end{document}
and nothing is plotted. How can I fix this ?
Best Answer
First, I think you meant to use
standalone
as a class. And then the variable name should be a macro. Also the trig functions accept argument in degrees. So you need to mention that they are in radians with an additionalr
. To remove the final connection to the inital point you can addsamples y=0
, For example for the domain-pi:pi
you getFull code