SUM indicator

[imalil]

Hello-

If I have this:

Seriesvar[0] = ((Seriesvar1[0] + doublevar) * doublevar1) - ((Seriesvar2[0] + doublevar2) * doublevar3);

Then I use:

mySUM = (SUM(Seriesvar, Period)[0]);

do the doublevar variables sum bars back, ...[period]+[1]+[0], like the Seriesvar[0], or do I get doublevar at bar[0] added together period times? Do all the variables in SUM have to be series variables in order to return the correct values?

I guess this question also applies to all the MAs, MAX/MIN, and anything else.

Thank you.

[NinjaTrader_Jim]

Thanks for your post imalil,

SUM will take a Series object which is a collection of values assigned for each bar, and a period describing how many values from the current bar to include in the summation. Since it is built as an indicator it works similarly to how an SMA would work.

What you have written will take the last "Period" number of values from "Seriesvar" and add them together.

The publicly available SUM documentation could be referenced for further explanation and examples, and the Strategy Builder can also be used to generate syntax for further understanding. I'll include a link to SUM's as well as Series<T>'s documentation and a sample explaining custom Series objects further.

SUM - https://ninjatrader.com/support/help...mation_sum.htm

Series<T> - https://ninjatrader.com/support/help...us/seriest.htm

SampleCustomSeries - https://ninjatrader.com/support/help...taseries_o.htm

Please let us know if we can be of further assistance.