Youngki, Renger,
The colon character “:” is the matching operator in gams, not a sequence. To get a sequence, use the ‘'. Note that the matching operator is fairly new, but of course many things are new when compared to the '’ for a sequence.
Many characters can be used in GAMS labels, but only when quoted. The colon is one such. If you really want to use colons, quote the labels and you will be OK. Or do as Renger suggests and lose the colon.
Run the code below to see what goes on with the different ways to declare a set:
gams time.gms gdx=time
gdxdump time
- time.gms starts here
set t0 / 10*00 /;
set t1 / 10:00, 10:05, 10:10 /;
set t2 / ‘10:00’, ‘10:05’, ‘10:10’ /;
-Steve
On Thu, Jan 23, 2014 at 3:27 AM, Renger van Nieuwkoop wrote:
Hi Youngki
The “:†is used for writing set elements in sequence format: 1:4 → 1,2,3,4.
Just rename 10:00 etc in 1000, and all works fine.
Cheers
Renger
From: gamsworld@googlegroups.com [mailto:gamsworld@googlegroups.com] On Behalf Of YOUNGKI CHOI
Sent: Donnerstag, 23. Januar 2014 09:18
To: gamsworld@googlegroups.com
Subject: Doesn’t gams process SET data such like time format?
Dear, members
I made table with two indices which are p, t.
I program like below.
sets
P each pilot /a, b, c, d, e, f, g/
T time with 5 minute increments /10:00, 10:05, 10:10, 10:15, 10:20/
table
time(p,t) table value 1 if P is available for T time, otherwise 0
…omited…
When I run gams, it doesn’t recognize set T which consist of 10:00, 10:05, 10:10, 10:15, 10:20.
Doesn’t gams process SET data such like time format??
please let me know how to midify this happening…
–
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Steven Dirkse, Ph.D.
GAMS Development Corp., Washington DC
Voice: (202)342-0180 Fax: (202)342-0181
sdirkse@gams.com
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