JavaSide.com : applets / tFunction - free Java math parser applet

	Java tFunction V 1.01

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Description Registration HTML Source Parmeters Functions and Warnings History Download Samples

Description
tFunction is a Draw function Applet. tFunction run on all browser with support JDK 1.02 . tFunction is simple sample of my parser class and cChart Component. With tFunction you can draw : all "f(x)" function...

Registration / Enregistrement

tFunction is a FreeWare for non commercial site.
For personnal use you want add a reference to me (my URL page) and send to me your URL (with tFunction applet).
For a professional use you want get a "professional registration". With this registration you can use tFunction with no reference to me and i send to you all tFunction, parser and cChart source.
If you want use cChart or parser in other Applet or application you must get a "professionnal registration".
For more informations about "Professional registration" : R. BERTHOU.

<applet code="tfunction.class" width=550 height=380>
    <param name=bgImg        value="./f_2.gif">
    <param name=font         value="Arial">
    <param name=fontsize     value=10>
    <param name=bgcolor      value=14737632>
    <param name=function     value="cos(x^2)/(0.1+x)"25>
    <param name=iMin         value="0.2"25>
    <param name=iMax         value="5"25>
    <param name=iPas         value="0.1"25>
</applet>

Param name	Type	Description
bgImg	string	Name of background image
bgcolor	integer	Border color rrggbb info (0xFFFFFF)
font	text	Font Name
fontsize	integer	Font Size
function	string	Function string
iMin	double	x Minimum value
iMax	double	x Maximum value
iPas	double	x increase value

Function Format

Type	Value	Comment
operators	+ - * / ^
Functions	cos sin tan log exp acos asin atan abs sqrt round
Constant	$PI $E	PI = 3.1416 E = 2.71828

Function	Return	Comment
cos(x^2)/(0.1+x)	Ok
sin(x*$PI/2)/SQRT(+ABS(x))	Ok	Warning ! : if x = 0 return NaN
x^-1	Err	Use x^(-1) idem "*" and "/"
x^+2	Err	Use x^(+2) idem "*" and "/"
cos(x*PI/2)	Err	Use cos(x*$PI/2)

In construction...

1.01 Add horizontal scroll (cChart).

1.00 Firts version.

tFunction Sample

tfunction.zip (12Ko) (backup)

Copyright © 1996..2003, BERTHOU. All right reserved.
Last change : 05 March 2003 18H20