Draw lines in strategy

[yaniv]

Hi,
I have a strategy and I would like to draws some lines, i am using the below code for that:
Draw.Line(this, CurrentBar + "Upper", true, 1, somePrice, 0, somePrice, Brushes.Orange, DashStyleHelper.Solid, 1);
Is it the right way ?
If I want to make it Continuous (as shown in the second image in red), should i use Draw.VerticalLine ?

Thanks

[NinjaTrader_Jesse]

Hello yaniv,

To make the lines continuous you would want to use a Plot instead of the drawing tools, it will be much more efficient. A strategy can also use plots just like an indicator so you could add a plot in the same way with AddPlot.

In place of the drawing tool you would set the plots value:

Value[0] = somePrice;

That would connect the datapoints based on the plot style to avoid the gaps that you pointed out.

If you otherwise continue using a drawing object there is not necessarily a way to actually connect the lines, you could use a vertical line to simulate that but the line will be plotted inside a bar and will not likely connect to the other drawn lines in an visually pleasing way.

https://ninjatrader.com/support/help...ghtsub=addplot


I look forward to being of further assistance.

[yaniv]

Hi,
Well, i wrote the following lines into OnStateChange under the condition: State == State.SetDefaults
AddPlot(Brushes.Pink, "Upper");
AddPlot(Brushes.Pink, "Lower");

and into OnBarUpdate event i wrote:
Values[0][0] = <some_price>;
Values[0][1] = <some_price>;

and still can not see any plot on chart, i am using market replay (playback) running strategy onEachTick,

What did i do wrong ?

Thanks

[yaniv]

The purposes of drawing these lines are:
1. Drawing a StopLoss and TakeProfit line, only if I am in a position
2. Drawing a certain price level that I calculate in OnBarUpdate (i would like to draw it only if it higher than 0 and it should be continuous line
What is the correct way of accomplishing each of these goals?

Thanks

[NinjaTrader_Jesse]

Hello yaniv,

Are you using OnRender in the script? If you did use OnRender but did not call the base.OnRender(...) then the plots will be hidden. Can you confirm that you do not have OnRender being used?



I look forward to being of further assistance.

[yaniv]

Hi,
I just closed the chart and reopen it and now i can see the lines !!! Thanks, i do not know what was the problem.

What about drawing a StopLoss and TakeProfit lines, only if I am in a position, should i use AddPlot or also Draw.Line for this purpose ?

What if I also want to write the price above the line when using AddPlot but would like the previous price to be removed on each tick (exactly as in the volume profile indicator, image attached)

Thanks

[NinjaTrader_Jesse]

Hello yaniv,

For order lines you could use the drawing objects if you wanted to display data in a custom way. You can otherwise apply the strategy to a Chart and then the execution lines and plot markers will appear. Active orders can be displayed by having the chart trader panel open, that will allow the order lines to be displayed for the selected account.

You could use Draw.Text to display text which moves with the bars. Using the same tag name for the object will allow it to update the existing one. The price could be used to position the text. If you need to offset it you could use Y offset for the text or the price using the formula

Close[0] + 5 * TickSize

Which would offset from the close price by 5 ticks. Close[0] could be replaced with the plot.


I look forward to being of further assistance.