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Mistake in wiki regarding Indicator API?
jamesadk
 Post subject: Mistake in wiki regarding Indicator API? Post rating: 0   New post Posted: Wed 30 Sep, 2015, 16:51 

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Joined: Fri 04 Apr, 2014, 16:35
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Location: Monaco, Monte-Carlo
Hi support,

I was reading back through the Wiki and I think I have found a mistake:
Under "Method Calculate" in the "IIndicator Interface" page of the wiki https://www.dukascopy.com/wiki/#IIndicator_interface it says:

"If there is input array with 30 elements and calculate method is called for SMA indicator with ''startIndex'' 0 and ''endIndex'' 29, then if there is time period of 20, indicator will have ''firstValueIndex'' 20 and ''lastValueIndex 29."

Given that arrays start at 0 and not at 1, surely a 20 period SMA indicator would have a "firstValueIndex" of 19, rather than 20? (since 0,1,2,.....18,19 is 20 data points)

Please can you clarify?
 
API Support
 Post subject: Re: Mistake in wiki regarding Indicator API? Post rating: 0   New post Posted: Fri 02 Oct, 2015, 13:05 
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Joined: Fri 31 Aug, 2007, 09:17
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Yes, firstValueIndex should be 19
 
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