| Re: Where vs Histogram vs ?? [message #32615 is a reply to message #32526] |
Thu, 17 October 2002 18:13   |
Andrew Cool
Messages: 219
Registered: January 1996
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Senior Member |
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"Pavel A. Romashkin" wrote:
>
> I can definitely echo Bob's suggestion to use index for searching. Don't
> use structure fields. Using a database would like ly be better yet; I
> think MS Access Jet should be reasonably fast with 15 mln records.
> Good luck,
> Pavel
Hi Pavel,
I'm confined to running this under OpenVMS, so MS Access probably
ain't the cure here. ;-)
Andrew
>
> Andrew Cool wrote:
>>
>> Hello All,
>>
>> I have a structure defined as :-
>>
>> data_st = {YEAR : 0 ,$
>> DAY : 0 ,$ ; 136 days over 12 years
>> HALF_HR : 0 ,$ ; 0..47
>> RANGE_IDX : 0 ,$ ; 0..267
>> WRF : 0B ,$ ; 3 possible values
>> FREQ : 0B ,$ ; 4 possible values
>> BEAM : 0B ,$ ; 4 possible values
>> PAD : 0B ,$ ; Padding to align byte
>> boundaries
>> Parameter : FLTARR(5)}
>>
>>
>> Replicate that a few times :-
>>
>> database = Replicate(data_st,15425228)
--
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Andrew D. Cool .->-.
Electromagnetics & Propagation Group '-<-'
Intelligence, Surveillance & Reconnaissance Division Transmitted on
Defence Science & Technology Organisation 100% recycled
PO Box 1500, Edinburgh electrons
South Australia 5111
Phone : 061 8 8259 5740 Fax : 061 8 8259 6673
Email : andrew.cool@no-spam.dsto.defence.gov.au
Please remove the no-spam from my email address to reply ;-)
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