is EMA above the current pps bool

[NinjaTrader_Joydeep]

Hello chris8sirhc,
Are you trying to compare data with the preious bars, if so then please try the below code to do it.

if (MAX(High, 3)[1] > MAX(EMA(14), 3)[1])
{
  //do soemthing
}

[chris8sirhc]

Is there a link that describes what each part of that MAX function means? I'm confused about the syntax for it? Do you use a -1 to indicate that you are working with the previous candle?? or do you use 1 to indicate that you are working with the previous candle. What is the 3 for? Can you convert my line of code to using the max function instead of the close for the bar?

if ( (EMA(9)[0] < Close[0]) && (EMA(9)[-1] < Close[-1]) && (EMA(9)[-2] < Close[-2]) )
{
Plot0.Set(1);
}

[NinjaTrader_Joydeep]

Hello

Yes, you can refer to our help guide to know more about the MAX function.

http://www.ninjatrader.com/support/helpGuides/nt7/index.html?maximum_max.htm

3 is the look back period.


You use only 1 (one) and not -1 (minus one) to refer to the previous bars.

You code using the MAX function will be

if (MAX(Close, 3)[0] > MAX(EMA(9), 3)[0])
{
  //do something
}

[chris8sirhc]

ok, so that will give the max for the candle that is 2 back, not a compilation of the current bar and the previous 2, right?

ie, the high within the bar that is 2 back, not the high of the last 2 bars and the current one?

if 3 is the looking back period, then what is the 0 for?

[NinjaTrader_Joydeep]

Hello chris8sirhc,
It will compare the currentbar, previous bar and the candle 2 bars back.

0 (zero) is the current MAX values. If you append 1 (one) instead of 0 (zero) then the current bar will be not evaluated.

[chris8sirhc]

no, im just trying to test to see if the stock price has stayed above the EMA line for three candles in a row, I think i just need to use the High function not the max function.

Here is what I have:

protected override void OnBarUpdate()
{
// Use this method for calculating your indicator values. Assign a value to each

if ( (EMA(9)[0] < Low[0]) && (EMA(9)[1] < Low[1]) && (EMA(9)[2] < Low[2]) )
{
Plot0.Set(1);
}
else
{
Plot0.Set(0);
}

[NinjaTrader_Joydeep]

Hello chris8sirhc,
You can use both the codes. Ultimately its upto you on which code you are comfortable with.

[gapmeister]

Hello,

I'm a newbie to NT and coding in C#. After searching the forum for simple code to practice plotting a condition with a custom indicator in the Market Analyzer I came across this thread with a code snippet that seemed simple enough.

protected override void Initialize()
{
Add(new Plot(Color.FromKnownColor(KnownColor.Orange), PlotStyle.Line, "Plot0"));
Overlay = false;
}

/// <summary>
/// Called on each bar update event (incoming tick)
/// </summary>
protected override void OnBarUpdate()
{
if(CurrentBar < BarsRequired)
{
return;
}
// Use this method for calculating your indicator values. Assign a value to each
// plot below by replacing 'Close[0]' with your own formula.
if ( EMA(9)[0] > Close[0])
{
Plot0.Set(1);
}
else
{
Plot0.Set(0);
}
}

I cut and pasted the code example provided, but it does not compile? I get an error "The name 'Plot0' does not exist in the current context" Why am I getting this error? how do I fix it?

Thanks

[gapmeister]

I fixed the compile issue by adding a data series to the properties, forgot about that.

However another issue, I now get a message in Market Analyzer in the custom EMA9 column that says "#check log#'

All I want to do is have the background color green when the close goes above the EMA and red when it goes below. I know how to do this for stock indicators but am stumped with what should be a very simple example.

[NinjaTrader_CalH]

gapmeister,

What does the Log Tab in the Control Center report?

[gapmeister]

It says Error on accessing plot series'Plot0' for indicator 'EMA9':Exception has been thrown by the target of an invocation.

Also see some with added text Failed to call 'OnBarUpdate' method for market analyzer column EMA9.

[NinjaTrader_CalH]

gapmeister,

Can you send me your full script so I can test this on my end.

You can attach it here or send me a note to platformsupport [at] ninjatrader [dot] com and put ATTN Cal in the subject

[NinjaTrader_CalH]

Gapmeister,

You will need to set the DataSeries Values property to use Values[0] and not Values[2] as there is only one plot being used.

[Browsable(false)]
[XmlIgnore()]
public DataSeries Lower
{
get { return Values[0]; }
}

Let me know if I can be of further assistance.

[gapmeister]

OK,

I'm not understanding the logic behind Ninja Script I guess, all I want to do based on the following code

protected override void Initialize()
{
Add(new Plot(Color.FromKnownColor(KnownColor.Orange), PlotStyle.Line, "Plot0"));
Overlay = false;
}

/// <summary>
/// Called on each bar update event (incoming tick)
/// </summary>
protected override void OnBarUpdate()
{
if(CurrentBar < BarsRequired)
{
return;
}
// Use this method for calculating your indicator values. Assign a value to each
// plot below by replacing 'Close[0]' with your own formula.
if ( EMA(9)[0] > Close[0])
{
Plot0.Set(1);
}
else
{
Plot0.Set(0);
}
}


have the background turn green with Yellow text,when the close crosses above the EMA9,
Black with green text as long as the Close stays above the 9 EMA. Instead all I'm getting is a black background with "0" for everything true or false?

I know how to use cell conditions in Market Analyzer, but not with custom indicators which is important to me to learn.

[NinjaTrader_CalH]

Gapmeister,

You indicated this error message -
Error on accessing plot series'Plot0' for indicator 'EMA9':Exception has been thrown by the target of an invocation.

This was due to the wrong Values[2] being used, and need to adjust to Values[0].

If you corrected the code, you will have access to the Plot0 from the Market Analyzer column and be able to set your cell conditions to check for 0 or 1.