I'm sick and tired of functions right now at school, so i've written a small application that graws graphs and can be used to solve equations with one variable. It can draw up to 9 graphs at the same time and it's main feature is function interpreter that reads a function out of string (i need it since lite-c doesn't have execute() function). Everything is drawn with standart GS drawing commands, no bitmaps.
My next goal is to add algorythm that calculates the derivative of the function

I hope somebody may find this version useful

http://files.filefront.com/GraphX+v1ENrar/;9607827;/fileinfo.html

For liteC there is such thing as var_for_name.
Know this?
P.S. For creating such things best solution will be downloading Microsoft Visual Basic Express.
If you will ask, i can tell full needed changes to script.

If you want to generate charts with 3dgs, native functions cant be beat. Using VB.NET doesn't make any sense at all, because you can't combine it easily to your game.

I actualy wanted to say that for making this kind of programs you need VB only.
I bringed something native to this one to scool and was quite happy.

i just wanted to show that it's possible with GS

while the others are discussing VB...

good work!
impressed... I was to slack to do something like this, so i just used a graphing calculator or "maple" (does anyone hate that program as much as me? I'm sure that no programmers programmed that tool... it was mathematicians ... they're at verson 11, and scrolling still doesn't work ^^)

anyways, neat tool. I can't imagine at all how you transform the string into a function that can be calculated for multiple points...
well done

MIcha

It's easy to make:
You use one string for code function (changed by input)
Then make a "y=" string.
And add into while loop in drawing obj:
Code:

---

temp_i = -draw_range;
draw_line(nullvector,NULL,100);
while (temp_i<draw_range)
{
x = temp_i;
str_cpy(temp_s,"y=");
str_cat(temp_s,function_code);
var_for_name(temp_s);
draw_line(vector(x,y,0),line_color,100);
temp_i += 1;
}

---

That's easy on practice.

@ Shadow:

Looks handy indeed

@ Vadim:

Why don't you make your own version then ^^

Cheers

Frazzle

Thanks for all the positive responses

@ Vadim:
I think Germanunkol meant converting string into the working function.

If anyone is interested i can publish the source code

ok i`m very stupid (well not that stupid, just very new) ok ok (not that new just very slow) is slow better than stupid?
what exactly does this mean?

Quote:

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draws graphs and can be used to solve equations with one variable

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is it for setting up stuff for collison? like an easy way to set up particles and the like?