how to determine the number of positive values every 5 time-steps

[Ryan]

Hello Everyone
my model consists of a random number generator. it generates positive and negative numbers.
is there a way to find out the number of positive values generated every 5 time-steps?
in other words, I want to specify a variable in my model called "number of positive values" to show me the number of positive values every 5 time steps.

here is an example of what I want to do:
imagine my model has generated the following numbers in 10 consecutive time steps.
-1.02582, -0.780324, 0.168143, 0.287632, 0.569913, -0.981128, 0.544378, 0.472801, -0.370337, -0.387548

"number of positive values" must get the following values:
in the fifth time step : 3
in the sixth time step : 3
in the seventh time step : 4
in the eighth time step : 4
in the ninth time step : 3
in the tenth time step : 2

thanks in advance.

[Administrator]

Try something like

random number positive flag = if then else ( RN > 0 , 1 , 0 )
Number of positive values = integ( random number positive flag / time step - reset count , 0 )
reset count = if then else ( number of time steps elapsed = 5 , Number of positive values / time step , 0 )

[Ryan]

thank you so much.
apparently, "number of time steps elapsed" is not a built-in Vensim function.
I tried:
number of time steps = Time/TIME STEP
reset count = if then else ( number of time steps/5=0 , Number of positive values / time step , 0 )

but for an unknown reason, it doesn't seem to be working.
I appreciate any help.
thanks

[Administrator]

No it's not a built in function, but it's quite easy to figure out how to do it.