Calling indicator variables from another indicator

[dwh112655]

I want to create an indicator that can be used in the Market analyzer that will send an alert when the Bollinger Bands are inside the Keltner Channel. I have found examples of how to call an indicator from within another indicator however I believe I need to test Upper Bollinger Band < Upper Keltner Channel and Lower Bollinger > Lower Keltner Channel. Is it possible to call the individual variables (upper & lower bands) for each of the BB & KC from within a 3rd indicator to test for these conditions?.

Thanks,
Dave H.

[NinjaTrader_AdamP]

dwh112655,

Yes, it would be something like :

Bollinger(double numStdDev, int period).Upper[int barsAgo]

Bollinger(double numStdDev, int period).Lower[int barsAgo]

You can find out more about the Keltner channel using our help guide.

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

Please let me know if I may assist further.

[dwh112655]

Thanks NinjaTrader_AdamP

Thats just the example and link I needed. Thanks for the quick response.

Dave H.

[kabott]

Calling RValueChart

Hello, whats the proper way to call the RValueChart indicator from withing an other indicator?

ive did couple tests but i guess im doing something wrong.

[NinjaTrader_AdamP]

kabott,

I am not familiar with this indicator, could you please post a link to it?

[kabott]

Hi Adam, sure, here it is.RValueChart.zip

[NinjaTrader_AdamP]

kabott,

RValueCharts(bool changeBackground, bool dotDraw, int dotOffset, Color dotOverBought, Color dotOverSold, Color downColor, Color extremeOver, int length, Color lineCol, bool mainChartSettings, Color moderateOver, Color outlineColor, float outlineWidth, int soundAlertInterval, bool soundWarnings, bool textWarnings, Color upColor, ValueChartStyle vct)[int index]

Is the way to call it. You would need to replace all the different things like Color outlineColor with the appropriate inputs.

It looks like it may be drawing objects inside its code, and you would need to find a way to access these values possibly using the following example.

http://www.ninjatrader.com/support/forum/showthread.php?t=4991

[dwh112655]

For anyone following:

This is the abbreviated code for the Bollinger Band Keltner Channel squeeze indicator for Market Analyzer. Works well but I will improve it:

privateint SA = 0;

if(Bollinger(2, 20).Upper[0] < KeltnerChannel(1.5, 20).Upper[0] && Bollinger(2, 20).Lower[0] > KeltnerChannel(1.5, 20).Lower[0])
SA = 1;
else
SA = 0;
Value.Set (SA);

[dwh112655]

Defining a DataSeries

I have a follow-up question regarding the Market Analyzer Indicator I developed at the beginning of this thread. The Indicator checks for the "Squeeze" condition, when the Bollinger Bands are inside the Kelner Channel and delivers a numeric value that the Market Analyzer can evaluate. I have it working. Now I would like to add a Momemtum check, but I would like to evaluate Momentum on "smoothed" price data using Linear Regression. I created a DataSeries named LRDataSeries and Double Value named MOM. My intend was to create the LRDataSeries from Linear Regression of the Input Data without efecting the Input Data so it could be used for BBand & KC calcs: Calulate BB & KC from Input Data; calculate Momentum using 20 period Linear Rgression. Here's what I have:

protectedoverridevoid OnBarUpdate()

{

LRDataSeries.Set(LinReg(20)[0]);
MOM = Momentum(LRDataSeries,12)[0];



if(Bollinger(2, 20).Upper[0] <= KeltnerChannel(1.5, 20).Upper[0] && Bollinger(2, 20).Lower[0] >= KeltnerChannel(1.5, 20).Lower[0])

if (MOM > .0002)
SA = 1;
elseif (MOM < -.0002)
SA = 2;
else
SA = 3;
else
SA = 0;
Value.Set (SA);

The problem is that the BB and KC calcs do not appear to be using the original Inut Data. The indicator compiles without error, but no longer calulates the BB & KC correctly. I can only get this to work if I use Input Data for all calculation. Any help from the NT experts would be appreciated.

Thanks
Dave H

[dwh112655]

OK I was making this more complicated that it is. Just need the correct placement of executions, this should work:
protected override void OnBarUpdate()

{



if(Bollinger(2, 20).Upper[0] <= KeltnerChannel(1.5, 20).Upper[0] && Bollinger(2, 20).Lower[0] >= KeltnerChannel(1.5, 20).Lower[0])
{
Value.Set(LinReg(12)[0]);
MOM = Momentum(12)[0];
if (MOM0 > .0002 && MOM0 >= MOM1)
SA = 1;
else if (MOM0 < -.0002 && MOM0 <= MOM1)
SA = 2;
else
SA = 3;
}
else
SA = 0;
Value.Set (SA);

Compile & produces correct results.

[bskogz12]

keltner channel

working on a modified keltner indicator, what is the entire math behind the keltner channel that nija trader uses. thanks if possible

[NinjaTrader_Joydeep]

Hello Dave,
Thanks for your note and I am replying for Adam.

You can find the calculation for the Keltner channel from:

• In Control Center menu bar goto Tools>Edit NinjaScript>Indicators...
• In the Indicator dialog, select KeltnerChannel indicator and click on the Ok button.

Please let me know if I can assist you any further.