Median indicator ?

[SARdynamite]

Hello, is there a "median" indicator available around ?

Thank you

[NinjaTrader_Bertrand]

I'm not exactly sure what you mean by this, but the Median price can be directly accessed with the Median() method in your scripts -

http://www.ninjatrader-support.com/HelpGuideV6/Median.html

[SARdynamite]

Hello,

No that's not what I meant.

Median is a very specific mean indicator.

If the period is 5 then the median indicator should find the value the way that 2 values are below the median value, and 2 other values are above the median value.

Example with a series of 7 values (=input = Close for what it's worth) :
4 / 5 / 9 / 15 / 21 / 24 / 34

while the SMA(7) would have been (4+5+9+15+21+24+34)=16
...the median price is 15 just because 3 numbers are below it and 3 other numbers are above it

does the median price indicator exist on NT ?

[NinjaTrader_Bertrand]

SARdynamite, I see thanks for clarifying - unfortunately this does not exist per default in NinjaTrader. You would find perhaps various C# methods to calculate this via a Google search...

[mnoel]

Hello, I am also looking into an indicator being able to calculate the median price over a certain period of time. The median () function in Ninja only finds the median price within the same bar. What I am looking for is the same as SARdynamite. Is it available within Ninja? Or do you know if there is a code somewhere?
Thanks in advance.

[mnoel]

Sorry Ninja Trader Bertrand, I just saw your reply.
thanks.

[DaveE]

Code for MedianIndicator

Here's the code. Perhaps mnoel & SARdynamite could share their trading tips for its use?

/*1) Use a default of 5 for Period parameter.
Use a minimum of 3 for Period parameter (looks at current plus 2 previous). Since MedianIndicator(2) would give same result as SMA(2)
*/

//2) Add this line to "Using declarations"
using System.Collections.Generic;

//3) In Initialize:
Overlay = true;

//4) use this in OnBarUpdate():
if (CurrentBar<period) return;

List<double> vals = new List<double>();
for (int i = 0; i < period; i++)
{
vals.Add(Input[i]);
}
vals.Sort();
decimal midindex=(period-1)/2m; //if period is even this will be ?.5 (eg period=2 gives 0.5, so need mean of values at 0 and 1)
double val=0;

if (Math.Floor(midindex)==midindex)
{//odd period, just use middle value from sorted list
val=vals[(int)midindex];
}
else
{//even period, use mean of the two middle values
val=(vals[(int)Math.Floor(midindex)] + vals[(int)Math.Ceiling(midindex)])/2;
}

Value.Set(val);

[NinjaTrader_Bertrand]

Great, thanks for sharing your code Dave!

[mnoel]

Thank you very much DaveE for your code. I am new to programming in C#. I just switch from Metastock. I need this code in order to calculate the median volume over a certain period of time. This information is used to calculate the effective volume of a security (see Pascal Willain's book, Value in time).

I will keep you posted when I succeed in programming the rest.

[DaveE]

Hello mnoel,

Thanks for the feedback.
I just noticed that NT has a built in function GetMedian(), that must have similar code to my sample below. For some reason GetMedian() was not wrapped into an indicator. The simplest way to make a MedianIndicator is to use this code in OnBarUpdate()

if (CurrentBar<period) return;
Value.Set(GetMedian(Input,period));

[mnoel]

Hello mnoel,

Thanks for the feedback.
I just noticed that NT has a built in function GetMedian(), that must have similar code to my sample below. For some reason GetMedian() was not wrapped into an indicator. The simplest way to make a MedianIndicator is to use this code in OnBarUpdate()

Thank you again DaveE. Much appreciated! I have not started yet. Probably an Holiday project.
Regards