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Direct MessagesDate/Time: Sun, 19 May 2024 02:34:32 +0000
Post From: chart anomaly?
| [2020-04-20 16:20:20] |
| User500078 - Posts: 2 |
|
I am a student of a course teaching a futures trading strategy. Course materials include screenshots of Sierra Chart charts. The chart in question is of oats (ZO) and the screenshot was taken on 2018-02-13 and showed various support/resistance levels drawn on it. The last bar (on the far right) gave the following values for that day, 2018-02-13: open 279.25; close 278.00--the values are, of course, approximate--within a point--since I am reading them off a screenshot. So far, so good. The anomaly arises when I generate a continuous oats contract chart TODAY and draw historical support/resistance levels, expecting that these levels would be about the same, if not identical, to those drawn on the course's February 2018 chart. They were not, they were, in fact, off about 14-15 points. Surprised I looked deeper, to wit: the value of the 2018-02-13 bar on MY chart which now--in April 2020--says: open 299.50, close 298.25. So, for the SAME DAY there is nearly a 20 POINT DIFFERENCE between the two charts drawn more than two years apart?!?! which BTW are both set to "continuous futures contract, date rule rollover, back adjusted". The expectation is that on the 13th of February 2018 the oats contract did trade with certain OHLC prices and that these prices do not change as time passes. Right? I do not know what to make of this. It raises questions of data accuracy and reliability. The strategy I am learning is anchored in accurately drawn support/resistance levels. Can you explain these differences? And what's going on? Sierra Charts has been recommended. People say it is top of the line. And in the week or so I've been working with your charts on a trial basis, I am happy with Sierra Chart... except for that nagging anomaly. Thank you, Chazz B P.S. The language and communications everywhere on your website are refreshingly candid. Thank you! |