[OS X TeX] TKZplot2d for tikz/pgf problem.

Alain Matthes alain.matthes at mac.com
Mon May 14 12:30:36 EDT 2007

Le 14 mai 07 à 17:54, Frank STENGEL a écrit :

> Le 14 mai 07 à 16:19, Alain Matthes a écrit :
> <snip>
>> You need to make this
>> \tkzfctpt[type=$\bullet$]((-1),\tkzfcta){A}
>> because -1 give an error (-1) is necessary
> As far as I know the problem stems from the fact that - is not seen  
> as a unary - when the need arises (see the readme in fp.sty) Why  
> not have
> \FPeval\x{(#2)}%

  it's a fine idea, I had tested but without success but now that  
works ??

> instead ? There will still be prblems with expressions like -(\x-exp 
> (\x)).


works fine but the problems are different between tkztg and tksfctpt

> By the way why alternate between \x and x in the examples?

the problem arrives if xstep is used when the values of x are   
between 2000 and 20000.
The values that gnuplot gives in its table are too large for

I use \def\x{(x/\xunit)} \xunit depends on xstep.

I don't know how to make this without \x

example :

   \tkztxt[style    = {draw},%
           color    = black,%
           bkgcolor = bistre!50,%
           opacity  = 0.8]%
{$f(x)=\dfrac{1}{90000}x^3 -\dfrac{1}{{100}}x^2 +\dfrac{113}{36}x$}


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