LabVIEW et logiciels statistiques (R, Scilab, Matlab, ...)

Bonjour,
Nous avons développé des applications mêlant des acquisitions et des calculs statistiques. Les acquisitions et les calculs sont pseudo-temps réel (acquisition/analyse/sauvegarde/affichage en moins d'une seconde).
Jusqu'à présent, nous passons par une DLL C mais nous aimerions utiliser un logiciel "stat" pour simplifier nos futurs travaux.
Nous avons entendu parlé du logiciel R. Est-ce possible de lancer un script sous R via LabVIEW et de récupérer les résultats des calculs dans l'appli LabVIEW?
Si oui, comment et est-ce assez rapide?
Sinon, avez-vous déjà utilisé Scilab et/ou MatLAB? Qu'en pensez-vous?
Merci pour votre aide.

Bonjour,
Merci pour cette réponse.
Nous n'aimons pas trop ActiveX car il est un peu trop "Microsoft dépendant". Nous avons eu déjà des problèmes avec une de nos applis en changeant de Word (par exemple): le service informatique ne demande pas notre accord pour installer telles ou telles mises à jour sur un poste...
Pour le script (Matlab, Scilab), nous avons effectivement vu ces techniques mais cela ne convient pas à l'usage que nous voulons en faire, à savoir:
- nous recherchons puis validons un protocole statistique avec un logiciel "spécialisé" et plus adapté
- nous intégrons ces calculs statistiques dans notre appli LabVIEW en minimisant leur requalification.
En important un script dans un code LabVIEW, rien ne garantit que personne n'a touché par mégarde au code Matlab/Scilab donc nous sommes obligés de revalider les calculs statistiques une fois le programme LV terminé.
Avec un code compilé, nous pouvons garantir que le code statistique, une fois validé, ne peut être modifié. D'autre part, cela nous permettrait de corriger/modifier éventuellement les calculs sans avoir à requalifier toute l'appli.
Nous voulons bien "séparer" les 2 parties pour:
1 - minimiser les étapes de qualification
2 - simplifier les mises à jour
Nous cherchons donc un logiciel statistique qui puisse générer un code compilé ou utiliser un protocole de com compatible avec LabVIEW. Nous connaissons bien LabVIEW et ses possibilités mais au niveau logiciel mathématique compatible, nous n'y connaissons rien.
Des statisticiens nous ont parlé de R mais n'étant pas des programmateurs ni des experts R, ils ne pouvaient pas nous dire s'il pouvait générer des codes compilés et/ou "dialoguer" avec LabVIEW.
Matlab pourrait, nous a-t-on dit, générer des DLL/EXE mais de là à pouvoir les exploiter sous LabVIEW, nous n'en savons rien.
Nous continuons à chercher. Encore merci.

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Jay del Rosario wrote:
>
> How do I troubleshoot installation/distribution of a LabVIEW .exe
> which processes data using Matlab when it works on some computers but
> not others?
Poke around zone.ni.com and
http://digital.natinst.com/public.nsf/$$Search/ .
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Bonjour
en Labivew 7.1 RT, le plus simple est d'utiliser la bibiothèque NI-ModBus disponible sur le site NI Ele est justement écrite en LV7.1.
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Bonne journée
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Application Engineer / LabVIEW Certified Developer (CLD)

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Thanks & Regards,
Kunal Raithatha.
CTD - CLAD (I wish I can take off that A, and maybe use it later to replace D :-)
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more reply back.

Smercurio_fc
Pupose is to enlist name and value of constants n controls I used in quite a big VI, values of the constants are often manipulated to adjust the requirement. It will be good at the end if I can print them altogether.
Thank You.
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> i hope to find a way that matlab can control the start of a
> simultaneous analog input and output. triggering seemed like the most
> logical, but i have not been able to find a way to carry this out.
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Hi,
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Information on scilab: http://zone.ni.com/devzone/cda/epd/p/id/657
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LabVIEW Champion . Do more with less code and in less time .

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Dear Sirs:
My name is Juan Crespo and I write you from Spain. I answer if you could help me with a Labview problem. This is the problem.
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Best Regards
Juan Crespo
Attachments:
foo_wrapper.c ‏2 KB

Dear Juan Crespo,
normally I don't answer questions concerning Matlab because I have no experience with it. But your question was waiting a long time and had to do something with DLL I decided to look at it.
Your C code has a serious error. You are declaring a variabale named "in1" as "double *". You do not set this pointer to point to a variable. Then you use this uninitialized pointer in the fscanf function to read in from the file. The value is written somewhere in the address space at a place where "in1" is pointing randomly. This will cause an error or crash.
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Waldemar writing from Germany
Waldemar
Using 7.1.1, 8.5.1, 8.6.1, 2009 on XP and RT
Don't forget to give Kudos to good answers and/or questions

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This board is for Mathscript, but you seem to have a matlab problem. You should probably post in the LabVIEW forum instead.
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LabVIEW Champion . Do more with less code and in less time .

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Solved!
Go to Solution.
Attachments:
test_subVI_array_into_script.vi ‏8 KB
subVI_array_into_script.vi ‏8 KB

Hey Jarno,
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Hello sir,i need labview code for a code which is written in matlab,latter one is attached with this message.

hello sir,i need labview code for a code which is written in matlab...
clc;
close all;
clear all;
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Well, this code is quite trivial and if you have to learn LabVIEW anyway, you might as well try to implement it.
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Hi Praween,
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LabVIEW et logiciels statistiques (R, Scilab, Matlab, ...)

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