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comparing and concatenating arrays...please help!! [message #37605]

Thu, 08 January 2004 02:27

m.doyle
Messages: 6
Registered: January 2004

Junior Member

Hello all,

I really hope someone out there can help me with this....I am tearing
my hair out as my code is so slow!

I have 2 files of data (hourly met data) with one file containing one
set of parameters, and the other file containing another set of
parameters. What I am trying to do, is to match the data based on the
YY, MM, DD and HH values and then write BOTH sets of parameters to a
seperate file. For example;

file1:
1954 12 31 23 90 11 4 366 0.00

file2:
1954 12 31 23 2.80 2.10 2.20 95.21

intended result:
1954 12 31 23 90 11 4 366 0.00 2.80 2.10 2.20
95.21

NOTE: Both files have no order to them, so a simple concatenation
won't work

I have written some code, but it is wrist slashing-ly slow!;

I read in each variable as a seperate array...

b=0L
REPEAT BEGIN
c=0L
REPEAT BEGIN
If (year(b) EQ year2(c)) AND (month(b) EQ month2(c)) AND (day(b) EQ
day2(c)) AND (hour(b) EQ hour2(c)) THEN BEGIN

printf, 3, year(b), month(b), day(b), hour(b), winddir(b), windsp(b),$
present(b),visib(b), mslpres(b), airt(c), dewt(c), wett(c), relh(c),$
format = finalformat
endif

c=c+1

ENDREP UNTIL c EQ lines2-1

b=b+1

ENDREP UNTIL b EQ lines1-1

I'm sure there must be a better way than this.

Please help me!

Many thanks in advance, Martin..

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[Message index]

		comparing and concatenating arrays...please help!! By: m.doyle on Thu, 08 January 2004 02:27
		My final solution..thanks for your help! By: m.doyle on Tue, 13 January 2004 06:17
		Re: comparing and concatenating arrays...please help!! By: JD Smith on Fri, 09 January 2004 10:12

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