How do you use Input Mode in PLE+? I am trying to create exponential decay for a stock variable. Can I use Exponential Input Mode with an output flow variable for this purpose? if so, how would that look?
Thanks,
Input Mode
Re: Input Mode
I'm not sure what you mean by "input mode".
The conventional way to implement exponential growth is:
stock = INTEG( - outflow, initial stock ) ~ stuff
outflow = stock * loss rate ~ stuff/time
or
outflow = stock / lifetime
The conventional way to implement exponential growth is:
stock = INTEG( - outflow, initial stock ) ~ stuff
outflow = stock * loss rate ~ stuff/time
or
outflow = stock / lifetime
/*
Advice to posters (it really helps us to help you)
http://www.ventanasystems.co.uk/forum/v ... f=2&t=4391
Blog: http://blog.metasd.com
Model library: http://models.metasd.com
Bookmarks: http://delicious.com/tomfid/SystemDynamics
*/
Advice to posters (it really helps us to help you)
http://www.ventanasystems.co.uk/forum/v ... f=2&t=4391
Blog: http://blog.metasd.com
Model library: http://models.metasd.com
Bookmarks: http://delicious.com/tomfid/SystemDynamics
*/
Re: Input Mode
I'm not sure what you mean by "input mode".
The conventional way to implement exponential growth is:
stock = INTEG( - outflow, initial stock ) ~ stuff
outflow = stock * loss rate ~ stuff/time
or
outflow = stock / lifetime
The conventional way to implement exponential growth is:
stock = INTEG( - outflow, initial stock ) ~ stuff
outflow = stock * loss rate ~ stuff/time
or
outflow = stock / lifetime
/*
Advice to posters (it really helps us to help you)
http://www.ventanasystems.co.uk/forum/v ... f=2&t=4391
Blog: http://blog.metasd.com
Model library: http://models.metasd.com
Bookmarks: http://delicious.com/tomfid/SystemDynamics
*/
Advice to posters (it really helps us to help you)
http://www.ventanasystems.co.uk/forum/v ... f=2&t=4391
Blog: http://blog.metasd.com
Model library: http://models.metasd.com
Bookmarks: http://delicious.com/tomfid/SystemDynamics
*/