Index Out of Range Exceptions - NinjaTrader Programming | futures io social day trading
futures io futures trading

Index Out of Range Exceptions
Updated: Views / Replies:1,274 / 2
Created: by Zondor Attachments:0

Welcome to futures io.

(If you already have an account, login at the top of the page)

futures io is the largest futures trading community on the planet, with over 90,000 members. At futures io, our goal has always been and always will be to create a friendly, positive, forward-thinking community where members can openly share and discuss everything the world of trading has to offer. The community is one of the friendliest you will find on any subject, with members going out of their way to help others. Some of the primary differences between futures io and other trading sites revolve around the standards of our community. Those standards include a code of conduct for our members, as well as extremely high standards that govern which partners we do business with, and which products or services we recommend to our members.

At futures io, our focus is on quality education. No hype, gimmicks, or secret sauce. The truth is: trading is hard. To succeed, you need to surround yourself with the right support system, educational content, and trading mentors – all of which you can find on futures io, utilizing our social trading environment.

With futures io, you can find honest trading reviews on brokers, trading rooms, indicator packages, trading strategies, and much more. Our trading review process is highly moderated to ensure that only genuine users are allowed, so you don’t need to worry about fake reviews.

We are fundamentally different than most other trading sites:
  • We are here to help. Just let us know what you need.
  • We work extremely hard to keep things positive in our community.
  • We do not tolerate rude behavior, trolling, or vendors advertising in posts.
  • We firmly believe in and encourage sharing. The holy grail is within you, we can help you find it.
  • We expect our members to participate and become a part of the community. Help yourself by helping others.

You'll need to register in order to view the content of the threads and start contributing to our community.  It's free and simple.

-- Big Mike, Site Administrator

Thread Tools Search this Thread

Index Out of Range Exceptions

  #1 (permalink)
Elite Member
Portland Oregon, United States
Futures Experience: Beginner
Platform: Ninjatrader®
Broker/Data: CQG, Kinetick
Favorite Futures: Gameplay Klownbine® Trading of Globex
Zondor's Avatar
Posts: 1,331 since Jul 2009
Thanks: 1,246 given, 2,660 received

Index Out of Range Exceptions

When you see the dreaded Index Out of Range runtime error, it generally means that you are trying to access a value of an array that does not exist. Try{}Catch error handling will prevent these errors from crashing an indicator, but I now have zero tolerance for them. Here is how I deal with them.

One approach that often works is to make sure that the DataSeries or other type of array contains enough elements so that what you are trying to do can actually happen. For example, if you are using if(Risng(Values[0])) as a condition, don't do it unless Values[0].Count >=2, because if an array has less than 2 elements, Rising and Falling are meaningless.

Sometimes the errror occurs during startup when your array is empty, ie contains no elements and has a Count property of zero.. So for anything that accesses an array called MyArray, using if(MyArray.Count>3) as an enabling condition before trying to access a value of the array will take care of that condition.

Or before accessing the value for b bars back , check that MyArray.ContainsValue(b) is True.

If b is negative you can have problems. Unless you take special precautions and are more than b bars back from the CurrentBar, the value you are looking for will not exist. Avoid doing this.

NinjaTrader_RyanM thanked the original version of this post on the Ninjatrader forum, giving it an aura of respectability.

Reply With Quote
The following 3 users say Thank You to Zondor for this post:
  #2 (permalink)
Quick Summary
Quick Summary Post

Quick Summary is created and edited by users like you... Add FAQ's, Links and other Relevant Information by clicking the edit button in the lower right hand corner of this message.

  #3 (permalink)
Elite Member
Berlin, Europe
Futures Experience: Advanced
Platform: NinjaTrader, MultiCharts
Broker/Data: Interactive Brokers
Favorite Futures: Keyboard
Fat Tails's Avatar
Posts: 9,683 since Mar 2010
Thanks: 4,226 given, 25,728 received

Zondor View Post
When you see the dreaded Index Out of Range runtime error, it generally means that you are trying to access a value of an array that does not exist. Try{}Catch error handling will prevent these errors from crashing an indicator, but I now have zero tolerance for them. Here is how I deal with them.

The Index Out of Range Runtime Error occurs when the code is flawed, meaning that the code is trying to access a value that does not exist.

Try{}Catch is certainly not the right response. Try{}Catch is quite similar to the ostrich sticking its head into the sand. You know that there is a problem, but you do not want to see it. The result is bad code, as the coder admits that he did not thoroughly understand his own code. I agree that zero tolerance is the best way to deal with this problem. You need to find out why the Index Out of Range runtime error occured, and not just hide it.

I mostly use Try{}Catch now, when an indicator or strategy accesses an other indicator or file, and I cannot be sure that this file exists on the PC of the user, but certainly not to avoid Index Out of Range runtime errors.

Reply With Quote


futures io > > > > > Index Out of Range Exceptions

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Upcoming Webinars and Events (4:30PM ET unless noted)

Wyckoff Hunting for Great Risk/Reward Ratio w/Gary Fullett

Elite only

Digging into the Details of iSystems w/Stage 5 & iSystems

Jun 5

Similar Threads
Thread Thread Starter Forum Replies Last Post
The Dollar Index Zondor Emini Index Futures Trading 21 March 31st, 2016 03:44 PM
S&P500 index and S&P500 index futures correlation ocmsrzr Emini Index Futures Trading 15 October 9th, 2013 09:49 AM
Index Symbols TonyB Open E Cry 4 July 6th, 2011 12:17 PM
A volatility index paolfili The Elite Circle 8 August 17th, 2010 06:49 AM
Cumulative Index kaywai NinjaTrader Programming 12 January 24th, 2010 09:53 AM

All times are GMT -4. The time now is 08:07 AM.

Copyright © 2018 by futures io, s.a., Av Ricardo J. Alfaro, Century Tower, Panama, +507 833-9432,
All information is for educational use only and is not investment advice.
There is a substantial risk of loss in trading commodity futures, stocks, options and foreign exchange products. Past performance is not indicative of future results.
no new posts
Page generated 2018-05-27 in 0.08 seconds with 19 queries on phoenix via your IP