I appreciate if anyone can help me,
I have a table as follow,
rate
DATE VALUE
1 1997-01-10 5.30
2 1997-01-17 5.30
3 1997-01-24 5.28
4 1997-01-31 5.30
5 1997-02-07 5.29
6 1997-02-14 5.26
7 1997-02-21 5.24
8 1997-02-28 5.26
9 1997-03-07 5.30
10 1997-03-14 5.30
. ...... ...
. ...... ...
. ...... ...
I want to extract the DATE(s) on which the VALUE has
already dropped twice and the DATE(s) that VALUE has
already increased for three times,( ignore where
VALUE(i+1)-VALUE(i)=0),I try to use diff() function,
however that works only for one increase or decrease.
Sincerely,
Sean
You posted the referenced message to both
R-help and R-sig-finance.
Please do *not* post to more than one R-list!
Please do *not* post to more than one R-list!
Please do *not* post to more than one R-list!
Please decide if something is specific for an R-SIG-<foo> list
or if it belongs to R-help (or R-devel) and post to one and only
one mailing list!
We had another mess recently with this by a posting to both
R-help and R-sig-gui (and I think another one where
even 3 mailing lists where affected). The whole thing is a
particular impoliteness to all those people -- often the nice
helpers! -- who are subscribed to more than one of the implied
lists.
Chosing one list, the discussion thread will be archived/seen/read
consistently both on the server archives and people's mail/news boxes.
- If the thread should be *diverted* to another list, there
could be *one* overlap message (posting to both),
where the move should be announced
- If you deem it relevant, you can still alert the readers of
one list to a "hot topic" on another list, e.g., by posting an
URL to the starting message in an (online) archive.
Martin Maechler, ETH Zurich
PS: Of course, I've been tempted for a moment
to post this to all R- mailing lists ;-) :-)