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 Aug 29 2004, 09:47 AM
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Active  Member Posts: 11 Joined: 16-August 04 Member No.: 599 LV:7.0  |
I have a file of temperature adquisition data (data in columns), and want to make some operations in the Matlab script node. Imagine I get one of the columns as a vector. How can I easily get element by element of the vector to introduce it in the Matlab script node?. My matlab program calls one dll that only takes real number, but not vectors.
THANK YOU
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Aug 29 2004, 09:47 AM
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Aug 31 2004, 04:36 PM
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 Very Active Member Posts: 77 Joined: 30-May 03 From: Everett, WA Member No.: 107 Using LabVIEW Since:2006 LV:7.1.1 ,. ,. 
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Perhaps this answer is too simplistic:
Using the MATLAB Script node, if you only need one value at a time, index the array of data and send one value at a time. (This can't be right.) Using MATLAB batch mode, you can call a .m file that opens the data file and writes an output file. Use "System Exec.vi" to call MATLAB with the /r flag for Windows (-r for *nix) and the name of the .m file.
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Apr 17 2006, 09:13 PM
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One hit wonder! Member Posts: 1 Joined: 11-March 06 Member No.: 4404 LV:7.1.1 
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QUOTE (todd @ Aug 31 2004, 06:36 PM)  Perhaps this answer is too simplistic: Using the MATLAB Script node, if you only need one value at a time, index the array of data and send one value at a time. (This can't be right.) Using MATLAB batch mode, you can call a .m file that opens the data file and writes an output file. Use "System Exec.vi" to call MATLAB with the /r flag for Windows (-r for *nix) and the name of the .m file. Hi! I’m a new member for this forum. Can I save the file in labview in .mat form? Thanks and sorry for my english.
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Apr 18 2006, 04:22 PM
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#4
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Very Active Member Posts: 67 Joined: 16-September 05 Member No.: 3022 Using LabVIEW Since:2004 LV:8.5 ,8.2.1 ,. 
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QUOTE (epravi @ Aug 29 2004, 03:47 AM) I have a file of temperature adquisition data (data in columns), and want to make some operations in the Matlab script node. Imagine I get one of the columns as a vector. How can I easily get element by element of the vector to introduce it in the Matlab script node?. My matlab program calls one dll that only takes real number, but not vectors. How about calling the DLL from LabVIEW? If it's a special matlab-friendly DLL, maybe you can make another DLL that wraps it with a labview-friendly interface... =) -------------------- Guillaume Lessard
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May 11 2006, 12:45 PM
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 Very Active Member Posts: 110 Joined: 31-March 06 From: Detroit (work) / Ann Arbor (home), Mich. Member No.: 4616 Using LabVIEW Since:2001 LV:8.5 ,. ,.
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More free advice worth twice the price:
If you're at all familiar with Matlab, I would strongly urge you to write a version of the Matlab program that can handle a whole array at once. Array manipulation is what makes Matlab great! If there's a lot of data, your performance will improve. -------------------- Paul Torek, Ypsilanti/Trenton/Belleville, Michigan
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