Very bizzare indicator behavior - need help

[electron]

Hi,

I have this indicator, a stochastics kind, which acts pretty odd.

It plots (sometimes) for the period of 7 and higher, but only when the charts are static (no streaming data), but it does not plot at all (you get a blank region) when the data is streaming (so no use for real time trading).

Well, I am clueless as to what could be wrong with it. I got it from this forum, if I am not mistaken. I would appreciate your help. Thanks.

The code is attached.

[NinjaTrader_Matthew]

electron,

Thank you for your post and welcome to our forums!

Was this an indicator you were working on? Or have you installed it from another author's work?

When experiencing issues connecting in real time, do you get any errors on the Log tab of the Control Center listed in yellow? If so, what do these errors report?

[electron]

electron,

Thank you for your post and welcome to our forums!

Was this an indicator you were working on? Or have you installed it from another author's work?

When experiencing issues connecting in real time, do you get any errors on the Log tab of the Control Center listed in yellow? If so, what do these errors report?

Hi Matthew,

Thanks for your prompt reply.

I was using the code from another author. I wanted to add some twist to this indicator, but I found out that it was not working properly as it was.

Yes, I do get some error in the log on connecting when the plot disappears. Here is what the log says: "Error on setting indicator plot for indicator 'StochasticsPreferred'. Value outside of valid range."

Any advice would be appreciated.

Thanks again.

[NinjaTrader_Matthew]

Hello,

the logic is correct, however you're likely running into an issue explained in the following forum post:
http://www.ninjatrader.com/support/forum/showthread.php?t=3170

Please try adding the following snippet to the beginning of your code in OnBarUpdate()

if (Current Bar < 1)
return;

You need to ensure you have enough bars on the chart to calculate correctly.

[electron]

Hello,

the logic is correct, however you're likely running into an issue explained in the following forum post:
http://www.ninjatrader.com/support/forum/showthread.php?t=3170

Please try adding the following snippet to the beginning of your code in OnBarUpdate()

 
if (Current Bar < 1)
return;

You need to ensure you have enough bars on the chart to calculate correctly.

I had tried to do something like that before, but with no good outcome. I did it again following your advice, but the result is a blank plot again. The log gives the same error, too.

Thanks for trying to help, though. Any other ideas?

[NinjaTrader_Matthew]

electron,

If that did not improve, I"d suggest commenting out various segments of the code to see if you can locate where these errors are coming from. There is a comment already in your code about 'Does not plot!' so i'm not sure if this a known issue. You might want to see if you can check with the original author to see if this issue has already been resolved.

Please see the following Forum Post on Debugging your NinjaScipt code for more tips:

http://www.ninjatrader.com/support/forum/showthread.php?t=3418

[electron]

electron,

If that did not improve, I"d suggest commenting out various segments of the code to see if you can locate where these errors are coming from. There is a comment already in your code about 'Does not plot!' so i'm not sure if this a known issue. You might want to see if you can check with the original author to see if this issue has already been resolved.

Please see the following Forum Post on Debugging your NinjaScipt code for more tips:

http://www.ninjatrader.com/support/f...ead.php?t=3418

The "Does not plot!" comment was added by me after compiling and seeing the results. Well, I will try to do a more thorough debugging.

[koganam]

The "Does not plot!" comment was added by me after compiling and seeing the results. Well, I will try to do a more thorough debugging.

This line is most likely your problem. You are not checking for a division by zero. It need not be exactly zero; even if it is just a very small value, rounding errors can quickly send the result out of bounds.

 
raw.Set(100*((Close[0] - MIN(Low, period)[0]) / (MAX(High, period)[0] - MIN(Low, period)[0])));

[electron]

This line is most likely your problem. You are not checking for a division by zero. It need not be exactly zero; even if it is just a very small value, rounding errors can quickly send the result out of bounds.

 
raw.Set(100*((Close[0] - MIN(Low, period)[0]) / (MAX(High, period)[0] - MIN(Low, period)[0])));

Hi,

Thanks for your advice. Yes, you may be right, but could you give me a piece of code that handles this problem correctly, if that's not too much to ask.

Thanks again.

[laredo78676]

MACD disappears

when a drag a MACD over a stochastic sub graph,it stay for ahile then vanishes

[NinjaTrader_Bertrand]

Hi,

Thanks for your advice. Yes, you may be right, but could you give me a piece of code that handles this problem correctly, if that's not too much to ask.

Thanks again.

As an example you can check into our default Stochastics indicator code and how it would tackle this area successfully.

[NinjaTrader_Bertrand]

when a drag a MACD over a stochastic sub graph,it stay for ahile then vanishes

What scale are you then using for both? Each on their own? If you try putting them on the same scale that will create issues as the total scaling range seen for the range bound Stochastic va non range bound MACD will be very different.

[laredo78676]

macd

Can I adjust the scaling?

[NinjaTrader_Bertrand]

You could put both indicators on one panel, but different scales so this setup could be visualized better - please see 'Understanding Panel' from this helpguide link, which would include a video as well -

http://www.ninjatrader.com/support/helpGuides/nt7/navigating_a_chart.htm