[Tex/LaTex] trouble getting Tikz matrix to compile

nodestikz-matrixtikz-pgf

In advance of a summer class I'm teaching, I decided to try compiling my notes, which I haven't touched in any way, shape or fashion for 4-5 months. However, in that interval, I've updated laTeX packages as new updates have come online (using MikTeX 2.9). I have a large number of lectures containing tikzpictures, of the following general form (all of which used to compile perfectly):

  \documentclass{article}

   \usepackage{tikz}
      \usetikzlibrary{snakes,shapes,arrows,matrix,positioning}

      \begin{document}

  \begin{figure}[h]
  \centering
  \rule[-1.25cm]{0pt}{3.25cm}
    \begin{tikzpicture}[>=stealth,->,shorten >=1.5pt,line width=0.75pt]
   \matrix (a) [matrix of nodes,row sep=0.5em, column sep=3em]
   { \node[circle,draw,font=\small,minimum width=1cm] {\sffamily{1}};  &   \node[circle,draw,font=\small,minimum width=1cm]{\sffamily{2}}; &  \node[circle,draw,font=\small,minimum width=1cm]    {\sffamily{3}}; \\};
 \path[>=stealth,font=\small] (a-1-1) edge node[below] {$S_o$} (a-1-2);
 \path[>=stealth,font=\small] (a-1-2) edge node[below] {$S_1$} (a-1-3);
 \path[>=stealth,->,font=\small] (a-1-2) edge [bend right=50] node [above,near start] {$S_1F_2$} (a-1-1) ;
 \path[>=stealth,->,font=\small] (a-1-3) edge [bend right=55] node [above,near start] {$S_2F_3$} (a-1-1) ;
    \end{tikzpicture}
  \end{figure}

\end{document}

When I try to compile the preceding MWE, I get all sorts of error messages about 'no shape named a-1-1 is know…' etc. etc.

Which I find odd, because clearly, when it compiled perfectly before, said shape was known. I gather something has changed.

Any insights/pointers to the obvious most appreciated.

Best Answer

Things have changed with tikz v3.

  \documentclass{article}

   \usepackage{tikz}
      \usetikzlibrary{snakes,shapes,arrows,matrix,positioning}
   \tikzset{mynode/.style={circle,draw,font=\small,minimum width=1cm,font=\sffamily}
   }
      \begin{document}

  \begin{figure}[h]
  \centering
  \rule[-1.25cm]{0pt}{3.25cm}
    \begin{tikzpicture}[>=stealth,->,shorten >=1.5pt,line width=0.75pt]
   \matrix (a) [matrix of nodes,row sep=0.5em, column sep=3em]
    {|[mynode]|1  &   |[mynode]|2 &  |[mynode]|3 \\};
 \path[>=stealth,font=\small] (a-1-1) edge node[below] {$S_o$} (a-1-2);
 \path[>=stealth,font=\small] (a-1-2) edge node[below] {$S_1$} (a-1-3);
 \path[>=stealth,->,font=\small] (a-1-2) edge [bend right=50] node [above,near start] {$S_1F_2$} (a-1-1) ;
 \path[>=stealth,->,font=\small] (a-1-3) edge [bend right=55] node [above,near start] {$S_2F_3$} (a-1-1) ;
    \end{tikzpicture}
  \end{figure}

\end{document}

enter image description here

BTW \sffamily{1} is wrong as \sffamily is a switch. Use font=\sffamily as the option to the node instead..

Edit:

You can customize each node by putting the attributes in a \tikzset. This way you have more control over the individual nodes.

  \documentclass{article}

   \usepackage{tikz}
      \usetikzlibrary{snakes,shapes,arrows,matrix,positioning}
   \tikzset{mynode/.style={circle,draw,font=\small,minimum width=1cm,font=\sffamily},
            every node/.style={minimum width=1cm},
            firstnode/.style={ellipse,draw,font=\small\sffamily,fill=red!10}, 
            secondnode/.style={ellipse,draw,font=\small\sffamily,fill=green!10},
            thirdnode/.style={ellipse,draw,font=\small\sffamily,fill=brown!10},
            fourthnode/.style={ellipse,draw,font=\small\sffamily,fill=black!10}
   }
      \begin{document}

  \begin{figure}[h]
  \centering
  \rule[-1.25cm]{0pt}{3.25cm}
    \begin{tikzpicture}[>=stealth,->,shorten >=1.5pt,line width=0.75pt]
   \matrix (a) [matrix of nodes,row sep=0.5em, column sep=3em]
    {|[firstnode]|1  &   |[secondnode]|2 &  |[thirdnode]|3 \\};
 \path[>=stealth,font=\small] (a-1-1) edge node[below] {$S_o$} (a-1-2);
 \path[>=stealth,font=\small] (a-1-2) edge node[below] {$S_1$} (a-1-3);
 \path[>=stealth,->,font=\small] (a-1-2) edge [bend right=50] node [above,near start] {$S_1F_2$} (a-1-1) ;
 \path[>=stealth,->,font=\small] (a-1-3) edge [bend right=55] node [above,near start] {$S_2F_3$} (a-1-1) ;
    \end{tikzpicture}
  \end{figure}

\end{document}

enter image description here

This way the styles will be usable across tikzpictures.

Related Solutions

[Tex/LaTex] Rotate a node but not its content: the case of the ellipse decoration

The source of the difficulty is that ellipses are constructed in a particular way in TikZ. They are paths that start from the x-axis and proceed counter-clockwise around their centre. The vast majority of the time, the exact parametrisation doesn't matter. You appear to have found the one situation where it does!

In the actual question, you only want to be able to mirror the ellipse, and so draw it starting from the negative x-axis (the title of the question suggests a more flexible approach). That's actually not too hard since we can exploit the symmetry of the ellipse. The key is to provide it with a negative x-radius, since then it will start from the negative x-axis (and proceed clockwise, but we could correct for that by negating the y-radius as well). To do this, we interrupt the call from the node shape to the drawing command and flip the sign of the x-radius. The simplest way to do this is to redefine the \pgfpathellipse macro to do the negation and then call the original macro. The following code does this.

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{decorations,shapes,decorations.markings}
\makeatletter
\let\origpgfpathellipse=\pgfpathellipse
\def\revpgfpathellipse#1#2#3{%
  #2%
  \pgf@xa=-\pgf@x
  \origpgfpathellipse{#1}{\pgfqpoint{\pgf@xa}{0pt}}{#3}}
\makeatother

\tikzset{
  reversed ellipse/.style={
    ellipse,
    reverse the ellipse%
  },
  reverse the ellipse/.code={
    \let\pgfpathellipse=\revpgfpathellipse
  }
}
\begin{document}
\begin{tikzpicture}
\node[ellipse,
  draw,
  postaction={
    decorate,
    decoration={
      markings,
      mark=at position 1 with {
        \arrow[line width=5pt,blue]{>}
      }
    }
  }
] at (0,0) {hello world};

\node[reversed ellipse,
  draw,
  postaction={
    decorate,
    decoration={
      markings,
      mark=at position 1 with {
        \arrow[line width=5pt,blue]{>}
      }
    }
  }
] at (0,-2) {hello world};
\end{tikzpicture}

\end{document}

Here's the result:

rotated ellipse

(the arrow got clipped, but you can see where it lies)

[Tex/LaTex] How to define the default vertical distance between nodes

I don't really get the question so I hope this is what you wanted. If you include a full document (such that we copy paste and see the problem on our systems) things are much more easier.

Here, you can change the default setting within a scope but your block style had a node distance which was resetting every time it is issued. I've made it 2mm such that we can see the difference easier.

\documentclass[tikz]{standalone}
\usetikzlibrary{arrows,shapes.geometric,positioning}

\begin{document}
\begin{tikzpicture}[decision/.style={diamond, draw, text width=4.5em, text badly centered, node distance=3.5cm, inner sep=0pt},
                    block/.style   ={rectangle, draw, text width=6em, text centered, rounded corners, minimum height=4em, minimum height=2em},
                    cloud/.style   ={draw, ellipse, minimum height=2em},
                    line/.style    ={draw,-latex'},
                    node distance = 1cm, 
                    auto]
    \node [block] (1st) {1st};
    \node [block, right= of 1st]  (2nd1) {2nd1};
\begin{scope}[node distance=2mm and 10mm]%Here we change it for everything inside this scope
    \node [block, above= of 2nd1] (2nd2) {2nd2};
    \node [block, below= of 2nd1] (2nd3) {2nd3};
    \node [block, right= of 2nd1] (3rd1) {3rd1};
    \node [block, above= of 3rd1] (3rd2) {3rd2};
    \node [block, above= of 3rd2] (3rd3) {3rd3};
\end{scope}
    \node [block, below= of 3rd1] (3rd4) {3rd4};
    \node [block, below= of 3rd4] (3rd5) {3rd5};

    \path [line] (1st) -- (2nd1);
    \path [line] (2nd1) -- (2nd2);
    \path [line] (2nd1) -- (2nd3);
    \path [line] (2nd2) -- (3rd3);
    \path [line] (2nd1) -- (3rd1);
    \path [line] (1st) -- (2nd1);
\end{tikzpicture}
\end{document}

enter image description here

Best Answer

Edit:

Related Solutions

[Tex/LaTex] Rotate a node but not its content: the case of the ellipse decoration

[Tex/LaTex] How to define the default vertical distance between nodes

Related Question