Inv fisher transform not plotting properly

Zen Trader · (login for full post details)

Hi guys,

I'm trying to modify a script I found of Sylvain Vervoort's smoothed RSI inverse Fisher transform (as featured in TASC) to plot oversold and overbought levels, but it's plotting as a broken line. I have absolutely no idea what i'm doing wrong. Appreciate any help in implementing this properly. TIA.

I've attached the indicator script and this is how it's plotting...

cory · (login for full post details)

they are there, you can make them more visible so its easier to see;

Code

.........
			Add(new Plot(new Pen(Color.Lime, 3), PlotStyle.Line, "InvFishOS"));
			Add(new Plot(new Pen(Color.Red, 3), PlotStyle.Line, "InvFishOB"));
.........
.........
.........
			// Plot plain line
			InvFish.Set(inv_fish_value);
            		
			//plot coloured lines
			
		//	if (inv_fish_value > 40 && inv_fish_value < 70)
		//	{
		//	InvFish.Set(inv_fish_value);
               //	}
			
			if (inv_fish_value > 70)
			{
			InvFishOB.Set(inv_fish_value);
        	        }
			
			if (inv_fish_value < 40)
			{
			InvFishOS.Set(inv_fish_value);
        	        }	
.......

Fat Tails · (login for full post details)

Zen Trader

Hi guys,

I'm trying to modify a script I found of Sylvain Vervoort's smoothed RSI inverse Fisher transform (as featured in TASC) to plot oversold and overbought levels, but it's plotting as a broken line. I have absolutely no idea what i'm doing wrong. Appreciate any help in implementing this properly. TIA.

I've attached the indicator script and this is how it's plotting...

There is no need to add further plots to the indicator. Just take the original code and add

Code

#region Variables

......
private Color overbought = Color.Lime;
private Color oversold = Color.Red;
private Color neutral = Color.Cyan;
......
#endregion 

protected override void OnBarUpdate()
{
        ........ 
        if (inv_fish_value > 10 && inv_fish_value < 90)
		PlotColors[0][0] = neutral;
	else if (inv_fish_value >= 90)
		PlotColors[0][0] = overbought;
	else if (inv_fish_value <= 10)
		PlotColors[0][0] = oversold;
}

You also may add properties for the colors and serialize them.

Zen Trader · (login for full post details)

Thanks Fat Tails. I'll try that out and report back.

Zen Trader · (login for full post details)

Thanks again Fat Tails.

Works like a charm. Did not know about the PlotColors syntax.

I've attached the tweaked code for anyone interested.

Fat Tails · (login for full post details)

Zen Trader

Thanks again Fat Tails.

Works like a charm. Did not know about the PlotColors syntax.

I've attached the tweaked code for anyone interested.

You can even improve this approach, by making the colors user selectable. To achieve this you would first
add one line to the Intialize() section of the indicator.

Code

PlotsConfigurable = false;

This takes away the configuration options for the plot. Now you can manually add the properties of the plot such as width, PlotStyle, DashStyle and colors. You can declare variables for all of those and then add the properites to access them in the Properties region of the indicator.

The attached indicator T3Colored is a simple example how to do that. Pay attention to the proper serialization of the colors, which is explained here:

User Definable Color Inputs - NinjaTrader Support Forum

Zen Trader · (login for full post details)

I guess you're giving me this tip because you can't bear to see untidy, half written indicators!

Seriously, thanks for the tip. I'll tidy it up and re-upload!

Fat Tails · (login for full post details)

Zen Trader

I guess you're giving me this tip because you can't bear to see untidy, half written indicators!

Seriously, thanks for the tip. I'll tidy it up and re-upload!

If you have done this once, you can use the same approach for other indicators, and people will ask you for help and not me anymore!

Zen Trader · (login for full post details)

Smoothed Inverse Fisher Transform indicator, now with user selectable line plot options, and overbought and oversold levels. Thanks.

DavidHP · (login for full post details)

Zen Trader

Smoothed Inverse Fisher Transform indicator, now with user selectable line plot options, and overbought and oversold levels. Thanks.

This may have been revised and I missed it.
I noticed the code has settings for user selectable line width, stlye etc but an essential part of the code was missing.
The user changeable settings won't be applied without this:

Code

		protected override void OnStartUp()
		{
			Plots[0].Pen.Width = plot0Width;
			Plots[0].PlotStyle = plot0Style;
			Plots[0].Pen.DashStyle = dash0Style;
		}

I'm sure it was just an oversight.

romus · (login for full post details)

DavidHP

This may have been revised and I missed it.
I noticed the code has settings for user selectable line width, stlye etc but an essential part of the code was missing.
The user changeable settings won't be applied without this:

Code

		protected override void OnStartUp()
		{
			Plots[0].Pen.Width = plot0Width;
			Plots[0].PlotStyle = plot0Style;
			Plots[0].Pen.DashStyle = dash0Style;
		}

I'm sure it was just an oversight.

Hi @DavidHP,

Thank you for this.
I have never modified any indicator this way - and it worked!
I still cannot see the levels (OB and OS lines), even though I have removed indi, restarted NT and some of known tricks.
Can anyone post it here in .zip format?
This could make a life easier, at least for me.

Cheers,
romus

Inv fisher transform not plotting properly

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Inv fisher transform not plotting properly

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