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There have been some posts lately using either the 'ref' or the 'PREV'
functions. My question is: are the 2 functions mathematically equivalent?
And, would there ever be a reason that you would be forced to use 'PREV'
over 'ref '? The following is an example I created (not very sophisticated)
that created a binary output based upon whether today's close was greater
than yesterdays close which seems to show that the two are equivalent.
Statement A: x:= If(C > PREV, 1, 0);
Statement B: x:= If(C > ref(C,-1), 1, 0);
Thoughts? ........ John
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