I am trying to compile this code with "latex" (not pdflatex).

I got the code itself from a collegue, so it should work. Except maybe the way I compile it and the usepackage options?

Right now, I am getting the error:

" ...graphics[width = 0.54\textwidth]{SVM2.eps ! Undefined control sequence."

I shouldn't use graphics in Latex right? Since it is an eps figure. Any ideas?

The eps file is available here.


I forget to include some newcommands, as was remarked below. This is the corrected code. It compiles, but the substitutions appear next to the graph. I thought they were supposed to come inside the graph.

%  \usepackage{graphicx}
\def\bkRrm{{\rm I\kern-.17em R}}
\psfrag{E1}[][]{\ \ \ \footnotesize{${\bf w}^T\varphibold({\bf x})+b=-1$}}
\psfrag{E2}[][]{\ \ \ \ \footnotesize{${\bf w}^T\varphibold({\bf x})+b=0$}}
\psfrag{E3}[][]{\ \ \ \ \footnotesize{${\bf w}^T\varphibold({\bf x})+b=+1$}}
\psfrag{E4}[][]{$\varphibold_1({\bf x})$}
\psfrag{E5}[][]{$\varphibold_2({\bf x})$}
\psfrag{E6}[][]{$2/||{\bf w}||$}
\psfrag{E7}[][]{Class +1}
\psfrag{E8}[][]{Class -1}
  \includegraphics[width = 0.54\textwidth]{SVM2.eps}

enter image description here

  • You can use graphicx in latex or pdflatex however you don't need to explicitly refer to it as it is loaded by psfrag Jun 28, 2013 at 10:59

1 Answer 1


You don't show the important part of the error message. The undefined command is \varphibold.

From the name I guess you want a definition like


using latex, dvips, ps2pdf`, on the posted code I get the expected result:

enter image description here

  • Oh, you are absolutely right, I forgot to paste my newcommands in the file. I have edited my original question. This time, no compile errors, but the substitutions appear next to the picture.
    – dorien
    Jul 1, 2013 at 8:49
  • 1
    @dorien works for me, see update. Jul 1, 2013 at 9:26
  • Thanks, apparently the dvips is a necessary step, that fixed it!
    – dorien
    Jul 1, 2013 at 9:37

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