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Help in vector multiplication!!
Posted: Tue Dec 04, 2012 8:40 pm
by luisangelguzmang
Hi, i try to make a multiplication bewtween a vector and a scalar. I need the result in another vector, but i can´t do that. I need some help.....
The multiplication is:
- image
- mult.jpg (16.63 KiB) Viewed 3927 times
Re: Help in vector multiplication!!
Posted: Wed Dec 05, 2012 12:05 am
by tomfid
So, it looks like you want
outvector[1] = scalar*invector[1]
for i > 1
outvector
= scalar*outvector[i-1]
in Vensim, you'd do this as:
Code: Select all
vec : (v1-v10)
vecNext : (v2-v10) -> vecPrev
vecPrev : (v1-v9) -> vecNext
outvector[v1] = scalar * invector[v1]
outvector[vecNext] = scalar * invector[vecPrev]
Re: Help in vector multiplication!!
Posted: Wed Dec 05, 2012 4:25 pm
by luisangelguzmang
Thanks, but I can't understand completely. It is possible to get a small model with this?
Re: Help in vector multiplication!!
Posted: Wed Dec 05, 2012 5:10 pm
by tomfid
Try this:
It doesn't exactly replicate your numbers - I think your table is wrong.
This kind of operation (essentially an iteration within a subscript range) requires subscript mapping and equations for individual elements:
http://www.vensim.com/documentation/ref ... apping.htm
http://www.vensim.com/documentation/22100.htm
http://www.vensim.com/documentation/21265.htm