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Limit Values to Even Numbers Only
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Limit Values to Even Numbers Only

  #1 (permalink)
Market Wizard
New Orleans, La (Mardi Gras City)
 
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Platform: NinjaTrader
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Limit Values to Even Numbers Only

Can anyone tell me how to limit the parameters in an indicator to only EVEN numbers?
I want the min value to be 2.

I want the user to be able to select the Value but if they choose an ODD number I want only EVEN numbers to be allowed.

Kind of like when you try to enter a zero and the Math.Max(1,value) is in the code and an error is given that the value is not allowed.

Here is where the code should go I think:
 
Code
        public int ValueToShow  
        {
            get { return valuetoShow; }
            set { valuetoShow = Math.Max(2, value); }
        }
Thanks,

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Knowing it's not about Clouds or Wind. . .
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  #2 (permalink)
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  #3 (permalink)
Site Administrator
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A simple unfancy way is to let them input whatever, then just do a check once in your code to see if it's odd, and if so make it even.

How to check if a number is odd or even? (C# Knowledge Base) • Geekpedia

 
Code
                            


int Num 
5;

if (
Num 1)
{
// It's odd
}
else
{
// It's even

To get it to update instantly as a user enters an odd number in the dialog box you have to use Refresh() or Update() in the get/set or one of those things I've since forgotten after not programming in C# in a while I'm sure someone else can help if needed.

Mike

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  #4 (permalink)
Market Wizard
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Big Mike View Post
A simple unfancy way is to let them input whatever, then just do a check once in your code to see if it's odd, and if so make it even.

Mike


Thanks,

I used that method when I first wrote the indicator and it does change the value to even.
However it seems as if I'm missing something and there should be a way to accomplish this at user input of the incorrect number.

Like when entering a decimal value in a non-decimal field. An error occurs immediately or the value changes back to the original contents.

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  #5 (permalink)
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DavidHP View Post
Thanks,

I used that method when I first wrote the indicator and it does change the value to even.
However it seems as if I'm missing something and there should be a way to accomplish this at user input of the incorrect number.

Like when entering a decimal value in a non-decimal field. An error occurs immediately or the value changes back to the original contents.

Yes. There is. I just can't think of an indicator that does it at the moment so can't post sample code, and I've forgotten how to do it exactly, and am no longer using NT.

Perhaps @bukkan can help, or @tarantino or @gomi or @fluxsmith, or any number of other excellent programmers on the site.

Mike

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  #6 (permalink)
Elite Member
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DavidHP View Post
Can anyone tell me how to limit the parameters in an indicator to only EVEN numbers?
I want the min value to be 2.

I want the user to be able to select the Value but if they choose an ODD number I want only EVEN numbers to be allowed.

Kind of like when you try to enter a zero and the Math.Max(1,value) is in the code and an error is given that the value is not allowed.

Here is where the code should go I think:
 
Code
        public int ValueToShow  
        {
            get { return valuetoShow; }
            set { valuetoShow = Math.Max(2, value); }
        }
Thanks,

try like this

 
Code
public int ValueToShow
{
    get{return valuetoshow;}
    set{valuetoshow = Math.Max(2,value);    //minimum value 2
          if (valuetoshow % 2 != 0) valuetoshow -= 1; }  //make sure its even
//or +1 depending on what you want. for eg if you enter 15 and want the figure to be 14 then subtract it by 1 or if you want it to be 16 then add it by 1.
}

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The following user says Thank You to bukkan for this post:
 
  #7 (permalink)
Trading Apprentice
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tarantino's Avatar
 
Posts: 32 since Sep 2010
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How about:

 
Code
 
public int ValueToShow  
        {
            get { return valuetoShow; }
            set { valuetoShow = Math.Max(2, value % 2 == 0 ? value : value + 1); }
        }
Bukkan: thanks, seems like we were answering at the same time

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The following 2 users say Thank You to tarantino for this post:
 
  #8 (permalink)
Site Administrator
Manta, Ecuador
 
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Platform: My own custom solution
Favorite Futures: E-mini ES S&P 500
 
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Posts: 46,240 since Jun 2009
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Look at that. Ask and ye shall receive




And didn't even need the Update() code I was concerned about.

Mike

Due to time constraints, please do not PM me if your question can be resolved or answered on the forum.

Need help?
1) Stop changing things. No new indicators, charts, or methods. Be consistent with what is in front of you first.
2) Start a journal and post to it daily with the trades you made to show your strengths and weaknesses.
3) Set goals for yourself to reach daily. Make them about how you trade, not how much money you make.
4) Accept responsibility for your actions. Stop looking elsewhere to explain away poor performance.
5) Where to start as a trader? Watch this webinar and read this thread for hundreds of questions and answers.
6)
Help using the forum? Watch this video to learn general tips on using the site.

If you want
to support our community, become an Elite Member.

Reply With Quote
The following user says Thank You to Big Mike for this post:
 
  #9 (permalink)
Elite Member
Calcutta, India
 
Futures Experience: Intermediate
Platform: ArthaChitra
 
Posts: 278 since Jun 2009
Thanks: 161 given, 259 received


tarantino View Post
How about:

 
Code
 
public int ValueToShow  
        {
            get { return valuetoShow; }
            set { valuetoShow = Math.Max(2, value % 2 == 0 ? value : value + 1); }
        }
Bukkan: thanks, seems like we were answering at the same time


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  #10 (permalink)
Market Wizard
New Orleans, La (Mardi Gras City)
 
Futures Experience: Advanced
Platform: NinjaTrader
Broker/Data: Ninjatrader / Optimus Futures / AmpFutures
Favorite Futures: ES / 6E / 6B / CL
 
DavidHP's Avatar
 
Posts: 1,004 since Aug 2009
Thanks: 803 given, 1,368 received



Big Mike View Post
Look at that. Ask and ye shall receive




And didn't even need the Update() code I was concerned about.

Mike


WOW,

Thanks guys that was super.

It works just as I wanted.

Rejoice in the Thunderstorms of Life . . .
Knowing it's not about Clouds or Wind. . .
But Learning to Dance in the Rain ! ! !
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