[TRNSYS-users] TR: File handling

Wed Oct 5 10:19:37 PDT 2011

Marcello and Hermann,
   If you use the method below, you can sometimes run into trouble 
because TRNSYS already opens all of the files that are ASSIGNed to 
logical unit numbers. You may be able to just skip the line:

Open(unit=Fid,file=Filename)

or, you can use the access function:

closeFileIVF(Fid)

then reopen it with

Open(unit=Fid,file=Filename)

Best,
  David

On 10/5/2011 08:10, Hermann Schranzhofer wrote:
>
> Dear Marcello,
>
> It should work something like this:
>
> Fid = getParameterValue(1)
> Filename = getLUFilename(Fid)
> Open(unit=Fid,file=Filename)
> Read(Fid,*) value
> Close(Fid)
>
> Best regards,
> Hermann.
>
> _______________________________________________________________
>
> DI Dr. mont. Hermann Schranzhofer
> Institut fuer Waermetechnik / Institute of Thermal Engineering
> TU Graz / Graz University of Technology
> Inffeldgasse 25 / B, A-8010 Graz
>
> Tel.: +43 316 873 7314
> mobil: +43 664 60 873 7314
> Fax : +43 316 873 7305
> http://www.iwt.tugraz.at/
> _______________________________________________________________
>
>
> -----Ursprüngliche Nachricht-----
> Von: trnsys-users-bounces at cae.wisc.edu [mailto:trnsys-users-bounces at cae.wisc.edu] Im Auftrag von marcello.caciolo at aximaseitha-gdfsuez.com
> Gesendet: Mittwoch, 05. Oktober 2011 13:46
> An: trnsys-users at cae.wisc.edu
> Betreff: [TRNSYS-users] TR: File handling
>
> Dear Hermann,
>
> Thank you for your answer. However, the getLUfileName function gives me the name of the file as a string (which is, by the way, the correct one). But how can I use it to access this file?
>
> Is there a form of the "read" instruction taking as parameter the file name instead of the unit number? If yes, could you give me an example of its use?
>
> Thank you,
>
> Marcello
>
> -----Message d'origine-----
> De : trnsys-users-bounces at cae.wisc.edu [mailto:trnsys-users-bounces at cae.wisc.edu] De la part de Hermann Schranzhofer Envoyé : mercredi 5 octobre 2011 13:38 À : trnsys-users at cae.wisc.edu Objet : Re: [TRNSYS-users] File handling
>
> Dear Marcello,
>
> I think you have to use the getLUfileName function. See Programmers Guide page 7-46.
>
> Best regards,
> Hermann Schranzhofer.
>
>
> _______________________________________________________________
>
> DI Dr. mont. Hermann Schranzhofer
> Institut fuer Waermetechnik / Institute of Thermal Engineering TU Graz / Graz University of Technology Inffeldgasse 25 / B, A-8010 Graz
>
> Tel.: +43 316 873 7314
> mobil: +43 664 60 873 7314
> Fax : +43 316 873 7305
> http://www.iwt.tugraz.at/
> _______________________________________________________________
>
>
>
>
>
> ________________________________
>
> Von: trnsys-users-bounces at cae.wisc.edu [mailto:trnsys-users-bounces at cae.wisc.edu] Im Auftrag von marcello.caciolo at aximaseitha-gdfsuez.com
> Gesendet: Mittwoch, 05. Oktober 2011 11:19
> An: trnsys-users at cae.wisc.edu
> Betreff: [TRNSYS-users] File handling
>
>
>
> Dear TRNSYS users,
>
>
>
> I would like to write a component for TRNSYS 17 which reads its parameters from an external file. In the proforma of my type, I specified a parameter "Logical unit", linked to the name of the file in the "File" tab.
>
>
>
> In the FORTRAN code, at the iteration zero, my type simply use the read instruction as it follows:
>
>
>
> unit_fichier_sortie = jfix(getParameterValue(4) + 0.1)
>
>
>
> ! Lecture de la version du fichier
>
> read(unit_fichier_descriptif,*, iostat = erreur_lecture) par_1
>
>
>
> However, instead of reading in the correct file, this instruction reads in a file called "fort.30" (where 30 is the logical unit number assigned by TRNSYS).
>
>
>
> If I write my parameters in "fort.30", the type reads its parameters correctly. However, I would really like that it reads in the file I specify in the proforma ("exemple.in")!
>
>
>
> If I debug the code, the function getLUfileName(unit_fichier_descriptif) returns the correct name of the file (example.in).
>
>
>
> Has someone experienced the same kind of problem? For information, I use Compaq Visual Fortran.
>
>
>
> Thank you for your help!
>
>
>
> Marcello CACIOLO
> Responsable Outils et Méthodes d'Analyse Energétique ___________________________________________________
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