LaTeX Forum

\documentclass{standalone} 

\usepackage{pgfplots} 
\usetikzlibrary{pgfplots.groupplots}

\begin{document} 
\pgfplotsset{ 
   hide axis,
   colormap/blackwhite,
   % 
   % allow \draw ... instructions inside of an axis to leave the 
   % outline of the axis: 
   clip=false, 
} 
\pgfplotsset{ 
   hide axis,
   colormap/cool,
   % 
   % allow \draw ... instructions inside of an axis to leave the 
   % outline of the axis: 
   clip=false, 
} 
\begin{tikzpicture} 
\begin{groupplot}[
    group style={
        group name=my plots,
        group size=3 by 1,
        ylabels at=edge left
    },
    footnotesize,
    width=5cm,
    height=4cm,
    tickpos=left,
    ytick align=outside,
    xtick align=outside,
    enlarge x limits=false,
	domain=-10:10    
]
% Lattice
\nextgroupplot
%	\draw[step=1.0,black] ({axis cs:-2,-2}) grid ({axis cs:5,5});

% Cylinder
\nextgroupplot
  \addplot3[ 
         surf, 
      samples=20, 
      %samples y=31, 
      domain=1:5, 
      y domain=0:2*pi, 
      z buffer=sort, 
      variable=\u,variable y=\v, 
      point meta=v, 
   ] 
         ({1*cos(deg(v))},{1*sin(deg(v))},{u}); 

% Torus
\nextgroupplot
     \addplot3[ 
     	surf,
         samples=20, 
         domain=0:2*pi, 
         y domain=0:2*pi, 
         z buffer=sort, 
       variable=\u,variable y=\v, 
       point meta=v, 
       ] 
       ( {(1+0.5*cos(deg(u)))*cos(deg(v+pi))}, 
         {(1+0.5*cos(deg(u)))*sin(deg(v+pi))}, 
         {0.5*sin(deg(u))} 
       ); 
       \end{groupplot}
       
\draw [draw,thick,step=0.5cm] (0,0) node (v1) {} grid (3,2);
%\draw [thick,bend angle=-45, bend left] (0,1.5) to (-0.5,1.5) to (1.5,0) to (3.5,1.5) to (3,1.5);

%\draw [thick,bend angle=-45, bend left] (6,2) to (4.5,2) to (4.5,0) to (6,0.2);

\node at (-0.5,1.5) {A};
\node at (-0.5,0) {B};
\node at (3.5,1.5) {C};
\node at (3.5,0) {D};

\end{tikzpicture} 
\end{document}

\documentclass{standalone}

\usepackage{pgfplots}

\pgfplotsset{compat=1.9}

\begin{document}

% options for all following plots:
\pgfplotsset{
	hide axis,
	colormap/cool,
	%
	% allow \draw ... instructions inside of an axis to leave the
	% outline of the axis:
	clip=false,
}

\begin{tikzpicture}
  \begin{axis}[
  	axis equal,view={0}{90},
  ]
     \addplot3[
         surf,
         samples=13,
		 point meta=y,
       ]
	   {1};
  \end{axis}
\end{tikzpicture}
\begin{tikzpicture}
  \begin{axis}[
  	axis equal,
  ]
  \addplot3[
	   	surf,
		samples=20,
		%samples y=31,
		domain=1:5,
		y domain=0:2*pi,
		z buffer=sort,
		variable=\u,variable y=\v,
		point meta=v,
	] 
	   	({4*cos(deg(v))},{4*sin(deg(v))},{u});
\end{axis}
\end{tikzpicture}
\begin{tikzpicture}
  \begin{axis}[
  	axis equal,
  ]
     \addplot3[
         surf,
         samples=20,
         domain=0:2*pi,
         y domain=pi/2:2.5*pi,
         z buffer=sort,
		 variable=\u,variable y=\v,
		 point meta=v,
       ]
       ( {(0.5+2+cos(deg(u)))*cos(deg(v+pi))},
         {(0.5+2+cos(deg(u)))*sin(deg(v+pi))},
         {sin(deg(u))}
       );

	   \draw (axis cs:0,-2,0) circle(2pt);
  \end{axis}
\end{tikzpicture}

\end{document}

\documentclass{article}
\usepackage{tikz,amsmath, amssymb,bm,color}
\usepackage[margin=0cm,nohead]{geometry}
\usepackage{pgfplots}
\usepackage[active,tightpage]{preview}
\usetikzlibrary{shapes,arrows}
% needed for BB
\usetikzlibrary{calc}

\begin{document}
\begin{tikzpicture}
\node [circle, fill=black] (0,0) {};
% 	\begin{axis}[at={(0,-10)}]
%         \addplot3[surf,samples=25,samples y=31,domain=0:1*pi,y domain=0:2*pi] ({4*cos(deg(y))},{4*sin(deg(y))},{x});
%     \end{axis}
    
  \begin{axis}
     \addplot3[
         surf,
         colormap/cool,
         samples=20,
         domain=0:2*pi,
         y domain=0:2*pi,
         z buffer=sort
       ]
       ( {(0.5+1+cos(deg(x)))*cos(deg(y+pi))}, 
         {(0.5+1+cos(deg(x)))*sin(deg(y+pi))}, 
         {sin(deg(x))}
       );
  \end{axis}
\end{tikzpicture}
\end{document}