Units of DELAY3 function?

[cwclwei]

I'm a new person in Vensim. Now I have to do an exercise about simulation the development of "economy, resource and environment" of a society. But I have some problems about the "Units Check". There are something wrong with the DELAY3 functions,

Error in units for the following equation:
#increase of coal industry assets>DELAY3>LV1# =
INTEG( exploitation investment of coal
- #increase of coal industry assets>DELAY3>RT1# ,
#increase of coal industry assets>DELAY3>LV3# )
#increase of coal industry assets>DELAY3>LV1# --> yuan/Year
exploitation investment of coal --> yuan/Year
#increase of coal industry assets>DELAY3>RT1# --> yuan/Year
#increase of coal industry assets>DELAY3>LV3# --> yuan/Year

I have posted my model. Can anyone help me about this problem? Thanks a lot!
Vivian

[LAUJJL]

Hi Vivian

In your delay formulation you should replace for example delay3(x,3) by delay(x,y) with y = 3 units of time. this will take away all the errors coming from units bad formulation in delays. You can too replace all values like delay3(x,3) * 0.56 by delay3(x,y) * C with C a constant with dmnl units. it is a better practice to avoid puting directly any value whose dimension is not defined in an equation.
Regards.
JJ

[cwclwei]

Hi Vivian

In your delay formulation you should replace for example delay3(x,3) by delay(x,y) with y = 3 units of time. this will take away all the errors coming from units bad formulation in delays. You can too replace all values like delay3(x,3) * 0.56 by delay3(x,y) * C with C a constant with dmnl units. it is a better practice to avoid puting directly any value whose dimension is not defined in an equation.
Regards.
JJ

It works!!! Thank you so much!!!!!!!!

Vivian