Hi Nasim,
You can certainly create an array of 20,000 elements (or two Vectors,
as I did, with a smaller number).
The problem is, I don't think you can display that many points. How
big is your stage? I had mine set to 1024 x 768, which is normally
about as high as you want to go.
You don't need that many points to create a smooth graph, though. Try
using every 10th point, and either lineTo or curveTo.
To do that, in the part that creates the graph, increment by 10:
// Now draw the graph
for (x = 1; x<= len; x+=10)
Did you get my second e-mail, where I wrote the class for you? It uses
lineTo(), which should give you pretty smooth graph with 2,000 points.
My class isn't bug-free, but it is free, and you should be able to
make it do what you want. If not, I'll take another look at it in the
morning (it's after midnight here).
Cordially,
Kerry Thompson
On Tue, Aug 23, 2011 at 12:13 AM, nasim hhhhh <iranebah...@yahoo.com> wrote:
> Dear Kerry
> Hi
> I am really apreciate u , one of my bigest problem is when i want create
> point , my boss want to have an array of point that has distance between
> -10000 to 10000 or more than it because when the user want scale graph i
> should use that stoored point to calculate new graph , but the prolem is when
> i want to store data in array this loop take a lot of time and flash dont do
> anything until the loop finished , and after 15 s it get me eror of time or
> hang the program and close it !!!!
> in my program i should fine soulotion to draw online point plz help me
>
> --- On Mon, 8/22/11, Kerry Thompson <al...@cyberiantiger.biz> wrote:
>
>
> From: Kerry Thompson <al...@cyberiantiger.biz>
> Subject: Re: [Flashcoders] array problem,loop.plot
> To: "Flash Coders List" <flashcoders@chattyfig.figleaf.com>
> Date: Monday, August 22, 2011, 3:34 PM
>
>
> Sure. I knew there would be bugs in my code :-)
>
> Actually, you have so many points, you probably don't need to use
> curveTo(). lineTo() would probably work for you, and it just takes two
> parameters.
>
> Here's a class I wrote that draws something. It's probably not what
> you want, but it works, at least. You can take it from here. (I
> created this class in a Flex AS3 project--that's why I defined the
> stage size in line 6. If you do it in Flash, you won't need that--just
> set the stage size to what you want).
>
> Cordially,
>
> Kerry Thompson
>
> package
> {
> import flash.display.Sprite;
> import flash.display.Graphics;
>
> [SWF(width='1024',height='768',backgroundColor='#FFFFFF',frameRate='24')]
> public class GraphTst extends Sprite
> {
> private var pointX:Vector.<Number>; //vectors are much faster than
> arrays
> private var pointY:Vector.<Number>;
> private var ndx:int = 0;
> private var len:int;
>
>
> public function GraphTst()
> {
> init();
> createPoints();
> drawGraph();
> }
>
> private function init():void
> {
> // You have to create the vector in a new code line
> pointX = new Vector.<Number>();
> pointY = new Vector.<Number>();
> }
>
> private function createPoints():void
> {
> // first fill the vectors
> for (var i:Number= -100; i<100; i++)
> {
> pointX[ndx]=i + 100;
> pointY[ndx]=5*Math.sin(20*i);
> ndx++;
> }
> }
>
> private function drawGraph():void
> {
> // prepare to draw the graph
> graphics.lineStyle(2, 0X000000); //set the line to 2 pixels wide,
> black
> len = pointX.length - 1;
>
> // Now draw the graph
> graphics.moveTo(pointX[0], pointY[0]);
> for (ndx = 1; ndx< len; ndx++)
> {
> //trace("ndx: " + ndx);
> graphics.lineTo(pointX[ndx], pointY[ndx]);
> }
> }
> }
> }
>
>
>
>
>
> On Mon, Aug 22, 2011 at 2:08 PM, nasim hhhhh <iranebah...@yahoo.com> wrote:
>> Dear Kerry
>> I 'am really appreciate u ,but the first problem that i didnt use curve to
>> is it's parameter
>> it needs 4 parameter and i cant guess how to define curve point
>> do u have any idea plz tell me
>>
>> --- On Mon, 8/22/11, Kerry Thompson <al...@cyberiantiger.biz> wrote:
>>
>> From: Kerry Thompson <al...@cyberiantiger.biz>
>> Subject: Re: [Flashcoders] array problem,loop.plot
>> To: "Flash Coders List" <flashcoders@chattyfig.figleaf.com>
>> Date: Monday, August 22, 2011, 9:41 AM
>>
>> Gerry and Henrik have the right answer. Your computer monitor isn't
>> capable of displaying 20 million points, and Flash will hang, as you
>> have found out.
>>
>> This is untested e-mail AS3, but I would do it something like this:
>>
>> var pointX:Vector.<Number>; //vectors are much faster than arrays
>> var pointY:Vector.<Number>;
>>
>> // You have to create the vector in a new code line
>> pointX = new Vector.<Number>();
>> pointY = new Vector.<Number>();
>> ndx:int = 0;
>> len:int;
>>
>> // first fill the vectors
>> for (var i:Number= -10000 ;i<10000;i+=.1)
>> {
>> ndx++;
>> pointX[ndx]=i;
>> pointY[ndx]=5*Math.sin(20*i);
>> }
>>
>> // prepare to draw the graph
>> graphics.lineStyle(2, 0X000000); //set the line to 2 pixels wide, black
>> graphics.moveTo(pointX[0], pointY[0]); // move to the starting point
>> len = pointX.length + 1;
>>
>> // Now draw the graph
>> for (x = 1; x<= len; x++)
>> {
>> graphics.curveTo(pointX[x], pointY[y];
>> }
>>
>> There's more you have to do--importing the graphics package, perhaps
>> putting this all into a class, and so on. There are probably minor
>> bugs in the code you'll have to fix--this is just off the top of my
>> head. I think you will be much happier with performance and appearance
>> with something like this, though.
>>
>> Cordially,
>>
>> Kerry Thompson
>>
>> On Mon, Aug 22, 2011 at 4:49 AM, nasim hhhhh <iranebah...@yahoo.com> wrote:
>>> but the most problem is for loop i think flash dont do any thing until the
>>> loop finishde
>>> i need to use smal step because if the step is big the graph will be show
>>> like line to line , it s ugly graph
>>> and the distance that i use for loop is more importatnt for me i want to
>>> show 2*10^8 distance / i want to make point in my program and plot it one
>>> by one i make i plot
>>> i make i plot
>>> is there better way?
>>
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