Slope delta

[Tdschulz]

I'm attempting to calculate the change in slope from 1 bar ago to the current bar. I realize slope is already measuring the change but I want to measure the change of the slope. I receive an error doing it this way:

private double Slope0()
		{
			
			return (Slope(Close, 1, 0)-Slope(Close, 2, 1));
		}

Any ideas how to get the Slope[0]-Slope[1] ?

[NinjaTrader_Joydeep]

Hello Tdschulz,
I can compile the code fine at my end.

To assist you further can you please send a toy NinjaScript code* replicating the behavior to support[AT]ninjatrader[DOT]com

Please append Attn:Joydeep in the subject line of the email and give a reference of this thread in the body of the email.

I look forward to assisting you further.

*The "toy" just means something that is a stripped down version that isn't necessarily the whole logic. It makes things easier to rout out.

[Tdschulz]

It compiles fine but logs an error as soon as I plot it on the chart.
"Error on calling 'OnBarUpdate' method for indicator "MyCustomIndicato" on bar 0: You are accessing an index with a value that is invalid since its out of range. I.E. accessing a series [barsAgo} with a value of 5 when there are only 4 bars on the chart."
Do you get the same error?

[NinjaTrader_Joydeep]

Hello Tdschulz,
I could print the values of the difference.

Unfortunately I cannot say anything in concrete unless I can see a sample code which you are using in the OnBarUpdate event.

For the specific errors please refer to this post which further discusses it

http://ninjatrader.com/support/forum/showthread.php?t=3170

[Tdschulz]

I have it figured out. thanks. I needed:
if (CurrentBar < 1)
return;