incorrect volume on second charts

[nasdorq]

I've noticed that on a 6 second chart of SPY, using IQfeed data, that there appears to be a volume spike every 6th bar (30 seconds).  When looking at the time and sales, there aren't volume spikes occuring.  This happens also when the chart has been running for a period of time, not just upon refreshing using historical data.  I'm using MT Build 1.0.4898.2147

 

Here is a link to a snapshot.

 

http://tinypic.com/r/zldz0m/8

 

[Jerry Medved]

the stuff on the chart really should correspond to what you would see in raw data. I ran here and did not see any issue.  Could you turn off Auto backfill for charts, then close and re-open the chart. Does it show the same spikes?  If so, can you export your settings + "QUOTE DATA" and send it to me - the file will be way to bidg to send via email, so could you upload it somewhere and send me a link? ( www.zippyshare.com for example)

[Jerry Medved]

Oh, there is one more thing that could be causing it - could it be that you are getting data on SPY from 2 different sources?

[nasdorq]

Thanks for the reply.  Yes, I have SPY running on certain charts from IQfeed, but I also have SPY in a portfolio using IB, just to activate the IB data feed so I can retrieve IB data for other things like futures.  I removed SPY from the portfolio and rebooted but the results are the same.  Before I try the suggestions in your first email, do you think maybe its still due to multiple datafeeds somehow?

[Jerry Medved]

almost 100% certain of it. remove the symbol from other portfolios, so it is only in the IQFeed portfolio. Close the chart. Re-open it.  see if the issue goes away going forward.

[nasdorq]

that solved it.  Thank you