Control sub line width in tkz-collection

Question

In tkz-base I can control the line width of a grid with the line width option as in the following example:

\documentclass{article}

\usepackage{tkz-base}
\begin{document}
\begin{tikzpicture}
   \tkzInit[xmax=4, ymax=2] 
   \tkzGrid[sub,line width=1.5] 
   \tkzAxeXY
\end{tikzpicture}
\end{document}

However is there also a way to control the line width of the sub grid independently?

Answer 1

The line width is save in the command \tkzRatioLineGrid which is defined as follows.

\def\tkzRatioLineGrid{0.75}

So you can change this command.

\listfiles
\documentclass{article}

\usepackage{tkz-base}
\begin{document}

\def\tkzRatioLineGrid{0.2} 
\begin{tikzpicture}
   \tkzInit[xmax=4, ymax=2] 
   \tkzGrid[sub,line width=1.5] 
   \tkzAxeXY
\end{tikzpicture}
\end{document}

---

EDIT

As @student wrote the changing has no effect. Based on this information I add my File List. (I compiled with pdflatex)

 *File List*
 article.cls    2007/10/19 v1.4h Standard LaTeX document class
  size10.clo    2007/10/19 v1.4h Standard LaTeX file (size option)
tkz-base.sty    2011/06/01 1.16 c tkz-base
    etex.sty    1998/03/26 v2.0 eTeX basic definition package (PEB)
    tikz.sty    2011/06/07 v2.10-cvs (rcs-revision 1.81)
     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    2010/04/23 v1.9 graphics configuration of TeX Live
  pdftex.def    2011/05/27 v0.06d Graphics/color for pdfTeX
infwarerr.sty    2010/04/08 v1.3 Providing info/warning/message (HO)
 ltxcmds.sty    2011/04/18 v1.20 LaTeX kernel commands for general use (HO)
  pgfsys.sty    2010/06/30 v2.10-cvs (rcs-revision 1.37)
  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    2010/12/06 v2.10-cvs (rcs-revision 1.20)
 pgfkeys.sty    
 pgfkeys.code.tex
  pgffor.code.tex
    tikz.code.tex
numprint.sty    2008/02/17 v1.38 Print numbers (HH)
   array.sty    2008/09/09 v2.4c Tabular extension package (FMi)
      fp.sty    1995/04/02
defpattern.sty    1994/10/12
fp-basic.sty    1996/05/13
fp-addons.sty    1995/03/15
 fp-snap.sty    1995/04/05
  fp-exp.sty    1995/04/03
fp-trigo.sty    1995/04/14
  fp-pas.sty    1994/08/29
fp-random.sty    1995/02/23
  fp-eqn.sty    1995/04/03
  fp-upn.sty    1996/10/21
 fp-eval.sty    1995/04/03
tkz-tools-utilities.tex
tkz-tools-arith.tex
tkz-tools-base.tex
tkz-tools-misc.tex
tkz-tools-math.tex
tkz-obj-points.tex
tkz-obj-segments.tex
tkz-obj-marks.tex
supp-pdf.mkii
pdftexcmds.sty    2011/04/22 v0.16 Utilities 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)
epstopdf-base.sty    2010/02/09 v2.5 Base part for package epstopdf
  grfext.sty    2010/08/19 v1.1 Managing graphics extensions (HO)
kvdefinekeys.sty    2011/04/07 v1.3 Defining keys (HO)
kvoptions.sty    2010/12/23 v3.10 Keyval support for LaTeX options (HO)
kvsetkeys.sty    2011/04/07 v1.13 Key value parser (HO)
etexcmds.sty    2011/02/16 v1.5 Prefix for e-TeX command names (HO)
epstopdf-sys.cfg    2010/07/13 v1.3 Configuration of (r)epstopdf for TeX Live
 ***********