defining zero as less than xxx?

rdudley · Post by **rdudley** » Wed Jun 11, 2008 3:53 am

Graphics in a model are displaying values on y axis as (for example) -2e-006, which for my purposes is equal to zero.

Is there a way to tell vensim to display values below a certain threshold as 0.0?

I thought there was a way to do this but I can't find it

richard

bob@vensim.com · Post by **bob@vensim.com** » Wed Jun 11, 2008 10:09 am

There is not . In a sense it might be reasonable to just pretend a small number is zero but usually it is a little bit more than simple numerics (for example inventory draining with an effect of inventory on shipments) that causes the issue in the first place. Of course a custom graph can keep this from happening.

LAUJJL · Post by **LAUJJL** » Sat Jun 14, 2008 12:03 pm

Hi Richard.

What you can do is to add a new variable say 'modified value' = if then else (ABS (value)
< e-006,0,value) and make a graph of the 'modified value' instead of the value.
Of course you must do that for every variable concerned by the problem.
Regards.
JJ

[Edited on 14-6-2008 by LAUJJL]