Document Classes ⇒ Different fonts in math and text for IEEEconf class

[jazzgossen]

I'm preparing an IEEE conference paper, and the math fonts in my document are not the same as in the text, which annoys me.

Consider the following test document

Code: Select all

\documentclass[letterpaper, 10pt, conference]{ieeeconf}
\begin{document}
r$r$\emph{r}
\end{document}

I would expect the last two 'r' characters to look the same, but on my system it looks like the attached screenshot. Is that normal?

[Frits]

In the common classes (book, article, KOMA, etc), \emph{r} and $r$ are indeed the same fonts. You might want to take a look in the ieeeconf .cls file to check if something regarding this is coded (which probably will be the case, but I'm not familiar with ieeeconf).

Edit: Let's be a bit more precise. The \emph{r} uses the utopia font, while the $r$ uses the the standard LaTeX math font.

[localghost]

Somehow I can't comprehend the problem (see attachment). Supplementing your code with the \listfiles command in the very first line, you will get information about the version of the class and packages. I obtain the following list from the log file. Compare with yours.

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 *File List*
IEEEconf.cls    2009/04/05 v1.4 IEEE Computer Society 8.5x11" conference proceedings
 article.cls    2007/10/19 v1.4h Standard LaTeX document class
  size12.clo    2007/10/19 v1.4h Standard LaTeX file (size option)
geometry.sty    2010/07/13 v5.5 Page Geometry
  keyval.sty    1999/03/16 v1.13 key=value parser (DPC)
   ifpdf.sty    2010/01/28 v2.1 Provides the ifpdf switch (HO)
  ifvtex.sty    2010/03/01 v1.5 Switches for detecting VTeX and its modes (HO)
mathptmx.sty    2005/04/12 PSNFSS-v9.2a Times w/ Math, improved (SPQR, WaS) 
  helvet.sty    2005/04/12 PSNFSS-v9.2a (WaS) 
 courier.sty    2005/04/12 PSNFSS-v9.2a (WaS) 
   array.sty    2008/09/09 v2.4c Tabular extension package (FMi)
titlesec.sty    2007/08/12 v2.8 Sectioning titles
  ot1ptm.fd    2001/06/04 font definitions for OT1/ptm.
ot1ztmcm.fd    2000/01/03 Fontinst v1.801 font definitions for OT1/ztmcm.
omlztmcm.fd    2000/01/03 Fontinst v1.801 font definitions for OML/ztmcm.
omsztmcm.fd    2000/01/03 Fontinst v1.801 font definitions for OMS/ztmcm.
omxztmcm.fd    2000/01/03 Fontinst v1.801 font definitions for OMX/ztmcm.
 ***********

I assume that it's just a matter of outdated class and packages.


Thorsten

[jazzgossen]

Thanks for the hint about \listfiles. With the provided test document above, I get

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 *File List*
../styles/ieeeconf.cls
  ot1ptm.fd    2001/06/04 font definitions for OT1/ptm.
 ***********

and nothing more. And looking at my "ieeeconf.cls", the comment at the top of the file says "IEEEtran.cls 2002/11/18 version V1.6b". So it probably is an outdated version of the class, even though it is the file that's officially supplied by the conference. I'll look for "IEEEconf.cls 2009/04/05 v1.4" instead to see if that looks better.

[jazzgossen]

Update:
I shouldn't actually use the current IEEEconf class, but rather
\usepackage[conference]{IEEEtran}
After using that and installing the IEEEtran version of Ubuntu 10.04, I get the following output from \listfiles:

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 *File List*
IEEEtran.cls    2007/03/05 V1.7a by Michael Shell
  ot1ptm.fd    2001/06/04 font definitions for OT1/ptm.
 ***********

and the font selection is still the same as before.

If I do use the current IEEEconf, the fonts are as I think they should, but the overall formatting is completely different.

So maybe the problem is just that the conference (IROS) provides a poor style file.

[localghost]

I have built a complete example as shown below.

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\listfiles
\documentclass[12pt,letterpaper,conference]{IEEEtran}

\begin{document}
  r$r$\emph{r}
\end{document}

Processing this with PDFLaTeX leaves me with the same result as you described. The file list looks like the one you got.

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 *File List*
IEEEtran.cls    2007/03/05 V1.7a by Michael Shell
  ot1ptm.fd    2001/06/04 font definitions for OT1/ptm.
 ***********

Looking at the fonts of the resulting PDF I obtain the following.

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name                                 type              emb sub uni object ID
------------------------------------ ----------------- --- --- --- ---------
OYEIID+NimbusRomNo9L-Regu            Type 1            yes yes no       4  0
CLHIQO+CMMI12                        Type 1            yes yes no       5  0
MXFINE+NimbusRomNo9L-ReguItal        Type 1            yes yes no       6  0

The Computer Modern (CM) in 12pt size is used for the math expression. The text font is Nimbus Roman 9L (a clone of Times New Roman). Adding the txfonts package has the result shown in my first reply.

[jazzgossen]

Adding the txfonts package has the result shown in my first reply.

Perfect! That's it!