[Equest-users] Changing words with global parameters / parametric runs?

[J R]

Robby,
Sorry about that, for some reason your original message didn't make it into
my inbox, but I found it in the archives. Capitalizing the global parameter
seemed to do the trick.

Thanks for the tip!

John


On Thu, Dec 12, 2013 at 9:51 AM, Robby Oylear <robbyoylear at gmail.com> wrote:

> Did you try my suggestion?  Capitalizing your global parameter fixing your
> issue.
>
>
> On Thu, Dec 12, 2013 at 8:23 AM, J R <john.reed.other at gmail.com> wrote:
>
>> Hi David,
>> Thanks for the quick response.  I reset my global parameter to numeric,
>> and entered the input expression as you specified, but I'm now getting the
>> following error message:
>> "Expression Parsing Error: Invalid function name 'SYSTEM' 5"
>>
>> Any thoughts?
>>
>> Thanks,
>>
>> John
>>
>>
>> On Wed, Dec 11, 2013 at 2:29 PM, David Griffin <dgriffin at etcgrp.com>wrote:
>>
>>>  John,
>>>
>>>
>>>
>>> Try using an expression like the following which uses a ‘numeric’ global
>>> parameter rather than a ‘symbol’.
>>>
>>>
>>>
>>> if(#PA("Enthalpy Wheel On/Off ")=1)
>>>
>>> then
>>>
>>> #SI("YES","SYSTEM","RECOVER-EXHAUST")
>>>
>>> else
>>>
>>> #SI("NO","SYSTEM","RECOVER-EXHAUST")
>>>
>>> endif
>>>
>>>
>>>
>>> This expression is a work around to some issues I’ve found in eQuest
>>> using ‘symbol’ global parameters. Just set the global parameter to 1 and
>>> change it to anything else in the parametric run to change the value or
>>> vice versa. Let me know how it goes.
>>>
>>>
>>>
>>> Thanks,
>>>
>>>
>>>
>>> *David W. Griffin II*
>>>
>>> Energy Analyst
>>>
>>> ETC Group, LLC
>>>
>>> 801-278-1927 x 128
>>>
>>> Cell 480-736-2945
>>>
>>> dgriffin at etcgrp.com
>>>
>>> www.etcgrp.com
>>>
>>>
>>>
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>>>
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>>>
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>>>
>>> *From:* J R [mailto:john.reed.other at gmail.com]
>>> *Sent:* Wednesday, December 11, 2013 10:07 AM
>>> *To:* equest-users at lists.onebuilding.org
>>> *Subject:* [Equest-users] Changing words with global parameters /
>>> parametric runs?
>>>
>>>
>>>
>>> Hi Everybody,
>>>
>>> First off, as a relatively new eQUEST user, the past discussions in the
>>> archives has been immensely helpful in troubleshooting issues, so thanks to
>>> everybody for responding to questions from eQUEST rookies like myself.
>>>  Now, for the new questions:
>>>
>>>
>>>
>>> I've developed a model in detailed mode that I would like to make some
>>> parametric runs for to run alternative scenarios. For numeric inputs, I
>>> haven't run into any issues, but I'm wondering if there's a way to change
>>> words using global parameters too. Specifically, I'd like to add an
>>> enthalpy wheel in the parametric run by adjusting the yes/no option under
>>> my AHU's heat recovery 1 tab: "ERV device installed" Yes/No dropdown. These
>>> are the steps I've taken.
>>>
>>>
>>>
>>>    - Create new global parameter: "Enthalpy Wheel On/Off"
>>>
>>>
>>>     - Parameter type: "New Symbol"
>>>       - Parameter value: "No"
>>>
>>>
>>>    - Right click device Installed dropdown: User Input Expression - I
>>>    tried two different expressions:
>>>
>>>
>>>     - #SI(#PA("Enthalpy Wheel On/Off"),"SYSTEM","RECOVER-EXHAUST")
>>>
>>>
>>>     - Error Message: Expression Evaluation Error: BDL Symbol 'No' not
>>>          found
>>>
>>>
>>>     - #parameter("Enthalpy Wheel On/Off")
>>>
>>>
>>>     - Invalid symbol assignment (symbol table index = 0)
>>>
>>>
>>>    - If the above error were solved, my next step would be to create a
>>>    parametric run, component type: symbolic global parameter, and change the
>>>    value to "yes".
>>>
>>> I have no doubt that I'm using the wrong language for what I'm trying to
>>> accomplish, but don't know what other approach to take.  Any advice would
>>> be greatly appreciated.
>>>
>>>
>>>
>>> Also, on a more general note, does anybody have a good resource they
>>> could share that is more or less an eQUEST detailed mode guide? I've found
>>> the intro, wizard, and DOE2 guides on the eQUEST site, but it seems like
>>> there is a lot of functionality with the program in detailed mode that
>>> isn't really explained anywhere.
>>>
>>>
>>>
>>> Thanks in advance for your help!
>>>
>>>
>>>
>>> John
>>>
>>
>>
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