exclude null points in my calculation and series average

Hi,

does anyone know how to exclude the null points from the calculation ?
I add some null points at the beginning of my chart (FastLine Series) but when I use

Chart1.Series[index].MaxYValue => I get 0 for my minimum Y value because of the null points I added... is there any way to exclude the null points ?

One more thing.... Is there any function to calculate the average of 1 series of my chart...??
 

thanks alot ^^
allie910Asked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

odissey1Commented:
Hi allie910,

Actually 'Null' points differ only by color :). So if you check the color of the point, you will be able to omit those points in caclulations like

procedure TForm1.FormCreate(Sender: TObject);
var Av: double; //average
     i, k: integer;
begin
     Series1.FillSampleValues(10);
     Series1.AddNull('');
     Series1.ValueColor[0]:=clNone;

     Av:=0;
     Nnul:=0;
     for i:=0 to Series1.Count-1 do begin
       if Series1.ValueColor[i]=clNone then
       else begin
         Av:= Av+Series1.Yvalues[i];
         Inc(k) //count non-nil points

     end;
     
     //calculate average
     Av:=Av / k;

     Label1.Caption:=FloatToStr(Av);
end;

There is function to calculate average, but again - probably not in the standard Delphi package.
To check DblClick TChart -> in Chart Editor goto Series -> Add -> if you see Functions, go there.

Regards,
odissey1
P.S. 20 points for 2 questions???
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
allie910Author Commented:
Hi odissey1,

it's work just fine !! thank youuuu ^^

ps: sorry abt the points  that's my only points that i have ><'

thanks alot ;)
0
odissey1Commented:
Hi allie910,

Thank you for points. Regarding TeeChart, I really recommend you to post questions on on news://www.berneda.com. You will get unswers faster.

Regards,
<odissey1>
0
OWASP: Avoiding Hacker Tricks

Learn to build secure applications from the mindset of the hacker and avoid being exploited.

allie109Commented:
Hi odissey1,

I tried to go to berneda... but i really cant find how I can post anyquestion there..... I can only browse the questions and the anwers
><'  

0
odissey1Commented:
Hi allie910,

Like in any newsgroup. Make an account (set you nickname, and return address in Outlook or Netscape) -> compose message -> post.

Regards,
odissey1
0
allie109Commented:
hi odissey1...

heheh sorry maybe this is sounds stupid, That's the problem ! I can't find the link where I can register os something like that.. I can only browse the question posted there
0
odissey1Commented:
Hi allie 910,

Ok, my guess you don't have IP address or e-mail account (like on library computers) on this computer. Say, if you use an Outlook Express, check if you can send e-mails using this Outlook Express. If you can - than you should be able to post messages on Network grous. If you unable to send e-mail - ask whoever around how to send e-mails from this computer.

Regards,
odissey1
0
allie910Author Commented:
odissey1,

ok than... thanks alot ;) I'll try =D

0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Delphi

From novice to tech pro — start learning today.