Shorten a plot?

[Burga1]

Hi,

This might be a question for a math wiz, which I'm certainly not. I'm using the following indicator:

SLOPESCHAFF.Set(Slope(Schaff(23, 50, 9, 9).STR, 4, 0));

It creates a plot like the one in the attached image. What I'd like to do is "shorten" the plot by 2 periods, for example. I've tried changing the "8" parameter to a lower number but I saw no difference in the plot. Is this possible? I wonder if there's some mathmatical magic to accomplish that? Thanks in advance for any input...

[NinjaTrader_Ray]

What do you mean shorten? Do you mean that the the most recent plot value is 2 bars behind the current chart bar?

[Burga1]

Well yes I guess so...but 2 bars before would be preferable...what are potential techniques for manipulating the plot, if any?

[NinjaTrader_Ray]

to clarify -

do you want the indicator value for the current bar to be plotted two bars ago

or

do you want the indicator value for the current bar to be plotted on the current bar but make invisible the indicators value for the most recent two bars?

[Burga1]

Sorry if I was unclear:

"do you want the indicator value for the current bar to be plotted two bars ago"

That would be my choice, if possible.

For example, looking at my attached image, when the plot crosses the "0" line is it possible to manipulate it so that it plots 2 bars before (ago) that? Thank you again for your response(s).

[NinjaTrader_Ray]

Try something like:

if (CurrentBar < 2) return;

// Your indicator calculations here

Plot0.Set(2, indicatorValue);

More info -

DataSeries.Set(int barsAgo, double value)
You can also set the value for historical bars by including a "barsAgo" value that represents the number of bars ago that you want the double value to be stored at.

[Burga1]

I understand. Thank you for your replies.

[Burga1]

Follow up question please.

Is there a way to "shift" the line plot in "real-time" (vs. historical) in the same manner? With certain indicators I've been able to do this by simply changing the period parameter (the "8" in my example) by increasing/decreasing it...but it is not working for this indicator for some reason.

[NinjaTrader_Ray]

You can only shift plots forward not backward using displacement setting when adding indicator to chart.

[Burga1]

OK, thank you.