Solved

exclude null points in my calculation and series average

Posted on 2003-11-24
8
375 Views
Last Modified: 2010-04-05
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 ^^
0
Comment
Question by:allie910
  • 4
  • 2
  • 2
8 Comments
 
LVL 2

Accepted Solution

by:
odissey1 earned 20 total points
ID: 9814624
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
 

Author Comment

by:allie910
ID: 9829201
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
 
LVL 2

Expert Comment

by:odissey1
ID: 9835448
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
Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

 

Expert Comment

by:allie109
ID: 9836227
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
 
LVL 2

Expert Comment

by:odissey1
ID: 9839419
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
 

Expert Comment

by:allie109
ID: 9847565
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
 
LVL 2

Expert Comment

by:odissey1
ID: 9847938
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
 

Author Comment

by:allie910
ID: 9854855
odissey1,

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

0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Introduction The parallel port is a very commonly known port, it was widely used to connect a printer to the PC, if you look at the back of your computer, for those who don't have newer computers, there will be a port with 25 pins and a small print…
In my programming career I have only very rarely run into situations where operator overloading would be of any use in my work.  Normally those situations involved math with either overly large numbers (hundreds of thousands of digits or accuracy re…
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…

861 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question