Stella graph function in Vensim?

[aboutaleb]

Hi dear friends
I've recently joined the forum and I'll use your helpful comments for my system dynamics course.
At first I need a document in order to adopt the vensim's and stella's functions.
For instance, which function in vensim can performe as "graph" function in stella??
I need it for running this part of an example:
Death_Fraction = GRAPH(Density)
(0.00, 0.08), (10.0, 0.08), (20.0, 0.085), (30.0, 0.09), (40.0, 0.1), (50.0, 0.12), (60.0, 0.14), (70.0, 0.17),
(80.0, 0.2), (90.0, 0.24), (100, 0.3)
DOCUMENT: The death fraction is dependent on the density of the population. The higher the density,
the larger the fraction of the population that dies each year.
Thanks in advance

[Administrator]

I'm unfamiliar with Stealla, but I think you need a lookup table.

See
http://www.vensim.com/documentation/ind ... ookups.htm

[Rafael]

The simple way to do this is with function WITH LOOKUP, or an table LOOKUP(see the model attached) or if you need extrapolation with function LOOKUP EXTRAPOLATE.