Hello,

I came over to TradeStation from Thinkorswim bc they seemed to have more advanced developer tools. I'm trying to write a stdDev price spike indicator which needs the values of Close[0], Close[1], Close[2].

I'm always getting a "can't divide by zero" error and I finally figured out its bc, according to the debugger, the value of Close[1] and Close[2] are always the same price. Regardless of which ticker I'm using the two values will always be the same -- they'll differ from ticker to ticker, but the two closing prices are always the same.

Also, the price data coming back for Close[x] is completely wrong. Every ticker its off by 5 or 10% in the dev env..

I'm using the simulated trading, and the chart data is correct, its just the dev environment is pulling bad data.

I appreciate any suggestions.

Sample:

 

Code

Inputs: Length( 20 ); Variables: CLog(0), SDev(0), StdValue(0), Diff(0); Value1 = Length; Value2 = Close[0]; Value3 = Close[1]; Value4 = (Value2 - Value3); Value5 = Close[2]; Value6 = SquareRoot(Value1 / (Value1 - 1)); // close1 / close2 Value7 = (Value3 / Value5)

MrRobot,

Tradestation is very sensitive when it comes to divisions and it makes sense to check that the denominator is different than 0 for every division within your code.

Regards,

ABCTG

ABCTG 

MrRobot, Tradestation is very sensitive when it comes to divisions and it makes sense to check that the denominator is different than 0 for every division within your code. Regards, ABCTG

Yes, that makes sense. However, the only reason the denominator is 0 is bc its pulling in bad Closing bar data and using the same value for Close[1] and Close[2].

MrRobot,

from the code you posted the same value for Close[1] and Close[2] shouldn't be able to result in a denominator of 0. Which makes it likely that the error message you are getting is not caused by Close[1] and Close[2] being equal.

 

Code

Inputs: Length( 20 ); Variables: CLog(0), SDev(0), StdValue(0), Diff(0); Value1 = Length; Value2 = Close[0]; Value3 = Close[1]; Value4 = (Value2 - Value3); Value5 = Close[2]; Value6 = SquareRoot(Value1 / (Value1 - 1)); // close1 / close2 Value7 = (Value3 / Value5)

Regards,

ABCTG

MrRobot 

Yes, that makes sense. However, the only reason the denominator is 0 is bc its pulling in bad Closing bar data and using the same value for Close[1] and Close[2].