Help with DrawHorizontalLine

[PowerGrid]

Hi there,

I am pretty new to Ninja and am trying some simple stuff to get over the learning curve, here is a piece of code I wrote to draw a horizontal line when the slope marked ' 0 slope'

if (Slope(EMA(20), 5, 0) > -0.01 && Slope(EMA(20), 5, 0) < 0.01 )
{
DrawText("MyText" + CurrentBar, "0 Slope", 0, GetCurrentAsk() + 5 * TickSize, Color.Red);
DrawHorizontalLine("my", Close[0], Color.Blue);
flatSlope = true;
}else
{
flatSlope = false;
}

Here is the backtest result; I can see 'drawText' is working with ' 0 slope', but where is my horizontal line?

This is the NT7 documentation:

Syntax

DrawHorizontalLine(string tag, double y, Color color)


Examples

// Draws a horizontal line DrawHorizontalLine("tag1", 1000, Color.Black);

What did I do wrong?

Thanks!

[NinjaTrader_ChelseaB]

Hello PowerGrid,

Because the tag name is not unique (the way the text tag name is unique by adding CurrentBar to the string) there will only be one horizontal line that is being updated to a new price.

What was the close price the last very last time the object was drawn?

(For multiple horizontal lines, use unqiue tag names like "my" + CurrentBar)

[PowerGrid]

Thanks Chelsea B, I got it working... it was there at last '0 slope' at the very end of my backtest

[PowerGrid]

Hi Chelsea B, I got another issue in backtest, when the price moves up'n'down, eventually, it moved OUTSIDE the screen, how do you 're-center' it back ? (see attached screenshot), I tried to shrink it, but it's just too small to be useful...

Thanks!

[NinjaTrader_ChelseaB]

Hello PowerGrid,

To return to automatic scaling, click the small F in the upper right corner of the chart.

Below is a link to the help guide on navigating a chart. Please see the section 'How to change the vertical scale and range of a chart'

https://ninjatrader.com/support/helpGuides/nt7/navigating_a_chart.htm

[PowerGrid]

Thank you Chelsea B! works beautifully!