Re: [TRNSYS-users] Confusion in Type42

[David Bradley <bradley@tess-inc.com>]

Wimolsiri,
  The structure of external data files read by the DATA, DYNDATA, or
DynamicData subroutines is that the first line in the file contains the
value of the highest order independent variable. Thus if you have three
independent variables, line 1 in the data file should contain the values
of the "third" independent variable. Line 2 should contain the
values of the "second" independent variable and line 3 should
contain the values of the "first" independent variable. This
structure makes it easier to add new independent variables (and the
dependent variables that go along with them) to data files; the new
independent variables go at the top of the file and the new corresponding
dependent variables go in a block at the beginning of the data section
instead of scattered throughout the data section.
Kind regards,
 David


At 05:15 3/28/2006, Wimolsiri Pridasawas wrote:

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Hello!

There is a confusion in the code of function subroutine DATA, type 42a and 42b (conditioning equipments for 3 and 2 variables). According to the manual for subroutine ?DATA? (page 62, programmerguide), which is used for interpolate the data sets, in the external data access file (*.dat file),

The first row is the value of the independent variable 2
The second row is the value of the independent variable 1

To avoid the mistake and confusion, could you please consider changing or renaming the independent variable of type 42a and 42b as,

The first row is the value of the independent variable 1
The second row is the value of the independent variable 2
and
The second row is the value of the independent variable 3

The model has probably been changed, but the current version (16.00.0037) that I am using now make me confuse quite a lot.

Best regards,

Wimolsiri

 

 

________________________________

Wimolsiri Pridasawas

Kungl. Tekniska Högskolan

Inst. för Energiteknik

Tillämpad Termodynamik och Kylteknik

SE-100 44 Stockholm

 

Tel. +46(0)8 790 7889

Fax. +46(0)8 20 30 07

 


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