Price marker

[sandman]

I am using a colored HMA but the price marker is "weird" in that it shows decimal digits that are not part of the instruments tick increments but is even more fine tuned. See attached. The orange colored price marker is a simple EMA and shows correct price per the instrument's tick increments. The red price marker is a colored HMA but instead of showing "1.14150" it shows 1.14153".

How do I change that?

sandman

[NinjaTrader_ChelseaB]

Hello sandman,

Indicators will not always produce values that are an exact tick size.

You can round the values to a tick size with Instrument.MasterInstrument.Round2TickSize(double price); where price is the value you want to round.

[sandman]

Chelsea. Thanks. Is there a code sample somewhere that shows where in the code I would use this?

sandman

[NinjaTrader_ChelseaB]

Hello sandman,

I'm not aware of an example script that uses this. I've created a simple script to demonstrate.

[sandman]

Chelsea.

Thanks very much for your time with this. I can easily see where and how it fits into my code and have used it.

sandman

[sandman]

However I now noted that when I use it it not only changes the price marker but also the plot line. I do not want the plot line to change but only the price marker. How would that be made possible?

sandman

[NinjaTrader_ChelseaB]

Hello sandman,

It is not possible to set the marker of a plot to a different price than the plot. The market will always show the current value of the plot.

Instead, you can use two plots. One that is rounded to tick size and one that is not. One will set each bars color to Color.Empty to hide the plot from the chart.

[sandman]

I understand what you say. However, setting the Rounded2TickSize plot to Color.Empty means the price marker is present but is also "Empty".

I attach an image showing what I am trying to solve which is to a) get the smoothness of the standard EMA (left chart) and b) the relevant and correct price marker from the Rounded2TickSize EMA (right chart).

This is only applicable for a few instruments like ES and 6E where the charted decimal increments are smaller than the decimal increments in for example the DOM.

Perhaps there is another solution which would be to change the incoming datafeed altogether or whatever it depends on but that's beyond my (current) capabilities.

sandman

[NinjaTrader_ChelseaB]

Hello sandman,

As I mentioned in post #7, you will need to set each bars color to Color.Empty to hide the plot from the chart. This means do not set the entire plot's pen color to Color.Empty, set each bars PlotColor to Color.Empty. This would hide the plot from the chart, but the price marker will have the original color of the plot.

Below is a link to the help guide on PlotColors.
http://ninjatrader.com/support/helpG...plotcolors.htm

I am not understanding how changing the data feed would cause the plot to be smooth while the price marker is at an exact tick size.

I am also not aware of any way to modify the data feed. Though after data is received in your script you can modify this anyway you want.

Attached is an example.

[sandman]

Thanks for the sample which you included, Chelsea. It combines both SMAs and still did not do what I was after. It produces two price markers in the right hand margin. See attached image. I was able to produce an SMA, actually a single EMA, which shows the price marker that I wanted to see. The remaining drawdown was that it always kept showing up the EMA line in the current bar. I then replaced PlotStyle.Line with Plotstyle.Dot. See attached second image.

I now use a regular EMA to show the plotted line with Pricemarker set to False and a Rounded2TickSize EMA indicator with only a current plot as a dot and the price marker. Using both gives me what I wanted.

That would however not have been possible without you having supplied the sample code, so thank you!

sandman

[jeronymite]

Price marker vs HLine

I too am having some challenges in adding a plot with PlotStyle.HLine and being dynamically able to "hide" the actual line whilst retaining the price marker.

I've tried various of the suggestions in this and other similar posts without success.

So, how do I add a price marker with an associate HLine where I can "hide" the line at will but the price marker remains unaffected?

Thanks.

[NinjaTrader_ChelseaB]

Hello jeronymite,

You would need to do this the way sandman accomplished this and use two indicators. (If you are only wanting 1 tag to show)

[jeronymite]

Price marker vs HLine

Thanks, Chelsea. Is there an unsupported way to do this (in the spirit of opening up accessible but undocumented/unsupported APIs as evidenced in NT8 beta discussions)?

For example, the type ChartExecutionStyle has values of DoNotPlot, MarkersOnly and TextAndMarker. Are these or other possibilities able to achieve this?

Thanks.

[NinjaTrader_ChelseaB]

Hello jeronymite,

I am not aware of any undocumented way to show a different price on the price marker than the actual value of the plot.

So, two plots would need to be used. This causes two tags to appear. To only show one tag, the plots would need to be added to different indicators.

[jeronymite]

To clarify, I want exactly the same value for price marker and plot. I simply want to show/hide the plot element at will whilst the price marker remains unaffected and visible.

Thanks.