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I was noticing some strange values with dates in the MSXDataRec structure, so I plotted them to an indicator to see what was going on. The numbers seem to skip some days.
My platform is MetaStock Pro FX version 9.2
Data is $$EURUSD, 10 minutes
1/06/2009 20090106
1/07/2009 20090108
1/08/2009 20090108
1/09/2009 20090108
1/10/2009 (saturday, no data)
1/11/2009 20090112
1/12/2009 20090112
1/13/2009 20090112
1/14/2009 20090114
1/15/2009 20090116
1/16/2009 20090116
1/17/2009 (saturday, no data)
1/18/2009 20090118
1/19/2009 20090120
1/20/2009 20090120
1/21/2009 20090120
1/22/2009 20090122
I also checked the daily data the same way, with virtually the same results.
Any clue what's going on here? Is this a known problem?
Thanks,
Dave
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Rank: Member
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Joined: 7/10/2006(UTC)
Posts: 25
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Never mind, call off the dogs.
The bad data is occurring because of an error in the conversion between a double and a float with large numbers.
The number gets read in my DLL as a double (passed in from Lua code), and then cast to a float to set the value in the MetaStock indicator. Reading it as a double works fine, but the cast to float is not exact and changes the data.
Now to figure out how to fix it, without breaking other things.
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Rank: Advanced Member
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DP,
MS doesn't deal well with large numbers anyway; rounding/precision errors start creeping in at the order of 10^7 so any dates using yyyymmdd (i.e. order of 10^8) will be problematic. One way around this is to use a place holder, say 1, then format the date as 1yymm.dd as this has "less" troubles employed in MS.
Hope this helps.
wabbit [:D]
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Rank: Member
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Joined: 7/10/2006(UTC)
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Thanks wabbit. I decided to change the way I deal with dates by breaking the long (from MS) into three values: year, month, day. That fixes the issue I had with bad casts.
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