I tried it in Access, but i dont know how to automate the variou
criteria selection as stated in my first question. To do the filtering
i need to select the criteria as many time as the combinations of thos
criteria. i.e. (7(days) x 169 (duration) x 127 (segment criteria)
150241 trials. Basically i dont mind if the vba macro for this will b
slow., since i would rather run it and wait for an hour to get th
result then manually filter it for 150241 times. Furthermore, this i
just one out of 8 sets data that i have...
Please show me how to get the result, any reply is appreciated.



Myrna Larson Wrote:
I expect it could be done with VBA, but if you can't do it with a pivo
table,
the macro will be very slow -- very possibly unacceptably slow. Can yo
put
this data into Access? It can do averages and standard deviations, an
is very
good at "filtering".


On Tue, 26 Oct 2004 07:14:35 -0500, changeable
wrote:


Hi all! I have a question on how to automated this process.

i have some data which looks like these:
Time Day Y X Speed
6:12:21 Monday 3.137623456 101.6953814 57
6:12:27 Monday 3.136615051 101.6952216 71
6:12:32 Monday 3.135641022 101.6951024 75
6:12:37 Monday 3.134624022 101.6949792 75
6:12:42 Monday 3.133702706 101.6947838 75
6:12:47 Monday 3.132911451 101.6942716 71
6:12:53 Monday 3.132395216 101.6934099 61
. .
.
. .
.

and i need to do some filtering on it which is based on the following
criteria:

DAY TIME SEGMENT
Monday 7:00:00 3.137263<=Y<=3.138149
Tuesday 7:05:00 3.136371<=Y<=3.137263
Wednesd 7:10:00 3.135472<=Y<=3.136371
Thursday 7:15:00 3.134575<=Y<=3.135472
Friday 7:20:00 3.133716<=Y<=3.134575
Saturday . 3.13297<=Y<=3.133716
Sunday . Y<=3.13297AND101.693463<=X
21:00:00 101.692597<=X<=101.693463

i.e. I need to have the average speed and standard deviation of
group
of data that fall in:
certain "*Day*" (monday....sunday) and within certain "*time*
(7:00:00
to 7:05:00, 7:05:00 to 7:10:00, up to 20:55:00 to 21:00:00) an
satisfy
certain criteria "*segment* " (3.137263<=Y<=3.138149.and so on....)

I know this can be done by using the "auto filtering", however it is
too tedious as i have to repeatly select those criteria one by one
which may results to 7(days) x 169 (duration) x 127 (segmen
criteria)
= 150241 trials!!!!

I have tried pivot table too, but it cannot support the numbers o
data
that i have (around 30-40k). When i try a small portion of my dat
using
pivot tables, instead of select "range of criteria" i.e. (say tim
from
7:00:00 to 7:05:00) it can only select "a particular criteria" i.e.
(say, 7:01:30 or 7:02:01 and etc).

Besides, there are 3 types of criteria in the "segment" criteria. 1)
involve satisfying variable Y only, 2) involve satisfying variable X
only, 3) involve satisfying variable X and Y.

Please, anyone, show me how to solve it by vb or macro or c# or any
other better way...., thanks a lot

--
changeabl
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