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[EnergyPlus_Support] Re: Data arrays in EMS

Sounds great, Brent. And I suppose we could extend the forecast length by having multiple schedules that are offset by 1, 2, 3... days.

I'm just going to put it out there that having arrays as a variable type would be very useful for future E+ developments. 

Many thanks,
Liam

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Griffith, Brent" <brent.griffith@...> wrote:
>
> You could use a schedule file with a copy of the data that has been prepared to be shifted ahead in time.   Then an EMS sensor on the schedule value that feeds a trend variable.
> 
> 
> 
> From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Liam O'Brien
> Sent: Wednesday, June 05, 2013 1:07 PM
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> Subject: [EnergyPlus_Support] Re: Data arrays in EMS
> 
> 
> 
> Thanks, Brent. I was hoping for something slightly more flexible that could look into the future, for instance (e.g., I'd like to be able to access 48 hours of future weather data from the current time step). Any thoughts?
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx<mailto:EnergyPlus_Support%40yahoogroups.com>, "Griffith, Brent" <brent.griffith@<mailto:brent.griffith@>> wrote:
> >
> > For past data, there are Trend variables that can hold an array of data for past zone timesteps -- see EnergyManagementSystem:TrendVariable.
> >
> > From: EnergyPlus_Support@xxxxxxxxxxxxxxx<mailto:EnergyPlus_Support%40yahoogroups.com> [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx<mailto:EnergyPlus_Support%40yahoogroups.com>] On Behalf Of Liam O'Brien
> > Sent: Wednesday, June 05, 2013 12:47 PM
> > To: EnergyPlus_Support@xxxxxxxxxxxxxxx<mailto:EnergyPlus_Support%40yahoogroups.com>
> > Subject: [EnergyPlus_Support] Data arrays in EMS
> >
> >
> >
> > My grad students have run into independent situations where it would be incredibly useful to be able to store and access (on a time-step basis) numerical data in an array through EMS.
> >
> > Examples applications:
> > - Generate a complex probability distribution of occupant behavior during the simulation
> > - Store weather forecasts and use this data for predictive controls
> >
> > Using schedules won't suffice in this situation because we need to access future/past data; not just the present time step.
> >
> > Does anyone know of any way to accomplish this, or alternatively, of any plans to develop this capability in EMS in future E+ releases? Matrix arithmetic functionality would be a bonus, but one step at a time :)
> >
> > Best regards,
> > Liam O'Brien
> >
>




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