While trying an example from the datavisualization section of the current TikZ manual I get a strange error message. On my system I have the current MikTeX 2.9 and installed the CVS version of TikZ (CVS 2012-05-18 from texample.net) according to this question: How to install a current version of TikZ?
Now the first part of the following MWE fails, whereas the second part runs nicely and I do not have any idea why.
\listfiles
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{datavisualization}
\begin{document}
\begin{tikzpicture}
\datavisualization [school book axes, visualize as smooth line]
data [format=function] {
var x : interval [-2:2];
func y = \value x*\value x + 1;
};
\end{tikzpicture}
\begin{tikzpicture}
\datavisualization [school book axes, visualize as smooth line]
data {
x, y
-1.5, 2.25
-1, 1
-.5, .25
0, 0
.5, .25
1, 1
1.5, 2.25
};
\end{tikzpicture}
\end{document}
The error message I receive from pdflatex or lualatex is
! Package pgf Error: Unknown data format 'function'.
See the pgf package documentation for explanation.
Type H <return> for immediate help.
...
l.10 data [format=function]
It works nicely, when the first tikzpicture environment is commented out and lists what I think are the current files from TikZ:
article.cls 2007/10/19 v1.4h Standard LaTeX document class
size10.clo 2007/10/19 v1.4h Standard LaTeX file (size option)
tikz.sty 2012/05/14 v2.10-cvs (rcs-revision 1.99)
pgf.sty 2008/01/15 v2.10-cvs (rcs-revision 1.12)
pgfrcs.sty 2010/11/07 v2.10-cvs (rcs-revision 1.25)
everyshi.sty 2001/05/15 v3.00 EveryShipout Package (MS)
pgfrcs.code.tex
pgfcore.sty 2010/04/11 v2.10-cvs (rcs-revision 1.7)
graphicx.sty 1999/02/16 v1.0f Enhanced LaTeX Graphics (DPC,SPQR)
keyval.sty 1999/03/16 v1.13 key=value parser (DPC)
graphics.sty 2009/02/05 v1.0o Standard LaTeX Graphics (DPC,SPQR)
trig.sty 1999/03/16 v1.09 sin cos tan (DPC)
graphics.cfg 2007/01/18 v1.5 graphics configuration of teTeX/TeXLive
pdftex.def 2011/05/27 v0.06d Graphics/color for pdfTeX
infwarerr.sty 2010/04/08 v1.3 Providing info/warning/error messages (HO)
ltxcmds.sty 2011/11/09 v1.22 LaTeX kernel commands for general use (HO)
pdftexcmds.sty 2011/11/29 v0.20 Utility functions of pdfTeX for LuaTeX (HO)
ifluatex.sty 2010/03/01 v1.3 Provides the ifluatex switch (HO)
ifpdf.sty 2011/01/30 v2.3 Provides the ifpdf switch (HO)
luatex-loader.sty 2010/03/09 v0.4 Lua module loader (HO)
pgfsys.sty 2012/03/30 v2.10-cvs (rcs-revision 1.38)
pgfsys.code.tex
pgfsyssoftpath.code.tex 2008/07/18 (rcs-revision 1.7)
pgfsysprotocol.code.tex 2006/10/16 (rcs-revision 1.4)
xcolor.sty 2007/01/21 v2.11 LaTeX color extensions (UK)
color.cfg 2007/01/18 v1.5 color configuration of teTeX/TeXLive
pgfcore.code.tex
pgfcomp-version-0-65.sty 2007/07/03 v2.10-cvs (rcs-revision 1.7)
pgfcomp-version-1-18.sty 2007/07/23 v2.10-cvs (rcs-revision 1.1)
pgffor.sty 2012/01/09 v2.10-cvs (rcs-revision 1.21)
pgfkeys.sty
pgfkeys.code.tex
pgfmath.sty
pgfmath.code.tex
pgffor.code.tex
tikz.code.tex
supp-pdf.mkii
What further steps should I take to debug this problem?
Best Answer
I just spent two hours tracking this down. (This is my first time using TikZ.)
You were right to ensure that you have the CVS (under development) version 2012-05-18 from texample.net.
Now add this line:
This worked for me, running LaTeX on OSX (TeX Live 2012). If it doesn't work for you, try:
instead, possibly preceded by
\usepackage{pgfcore}and whatever else you normally put in the preamble to use TikZ.It appears that the datavisualization section of the manual hasn't yet been updated to tell which libraries or modules you need to load.