Dynamically call Matlab file

A colleague of mine has made a Matlab .m file that I should call in from LabVIEW. I have imported the function into a Matlab script node. I haven installed Matlab on my PC and therefore i get a licence error. Before I ask my boss for a matlab licence i will ask this forum if there is another way. The Matlab function is still under development and will change a number of times. I could be nice if I didn't have to import the function every time the .m file changes
1. Could I use a MathScript node instead? Or is there another way for importing or calling that function without a Matlab Licence?
2. Is it possible to dynamically call the Matlab Script node/ MathScript node eg via a propertynode or another method instead of importing the function?

I know the Model Interface Toolkit has some options for Matlab but I think that is only for compiled Matlab models.
http://sine.ni.com/nips/cds/view/p/lang/en/nid/211815
Unofficial Forum Rules and Guidelines - Hooovahh - LabVIEW Overlord
If 10 out of 10 experts in any field say something is bad, you should probably take their opinion seriously.

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Calling Matlab MEX Files in LabView ?

What is the procedure to call a MATLAB MEX File in Labview?

Nope Battler.
I didnt find any help regarding Matlab MEX DLLs on that link by Chris.
I presume if they are keeping mum, there is no solution possibly.
Btw, I migrated my testing from LV to MSVC.
Its a lot more easier to call Matlab MEX DLLs from MSVC.
http://www.mathworks.com/support/tech-notes/1600/1605.html

How to add dynamically called files to a teststand workspace?

I am using TestStand 4.1.1 and LabVIEW 8.6.1 to try and install dynamically called VI's into a TestStand workspace. I am following the instructions on pp. 14-8 through 14-10 in the TestStand Reference Manual (May 2008) edition. So far I have not been successful, and the instructions are not clear. For example, I cannot see in the instructions anywhere that I am supposed to add my test sequence. Should the test sequence already be loaded in the project before this set of instructions is followed? Could someone clarify this set of instructions for me?
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epsilon-delta

Epsilon,
What are you using dynamically called VI's for? Are you adding dynamic VI's to LabVIEW, or to TestStand? If you are calling from TestStand, you don't need to do anything, the deployment utility will do all of the work for you. The section on adding dynamically called files to a workspace listed in the Test Stand Reference Manual is a mini-tutorial, and not exactly step by step instructions. All you need to do to add dynamically called VI's is to add them to your workspace file, and make sure the TSW is saved before you build your deployment. The example right before that one, covers how to deploy from a TSW, and mentions that you need to add your sequence file to the project that is in the workspace.
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1. Create a new workspace file
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3.
Right click the project and select add additional files (here you
should add your sequence file and any files that are dynamically called
(e.g. VIs))
4. Go to Tools --> Deploy TestStand System
5. Check "Deploy Files from TestStand Workspace File"
6. Select the appropriate file path where you saved the workspace file
7. Add in a path for the location you want to store your deployable image (for instance your desk top)
8.
Go to the distributed files tab and select "yes" to analyze the source
files [here you will find all the files you chose to include with your
distribution, this is automatically populated from the workspace and
its dependencies), if you are deploying and plan on using a User
Interface and not the TestStand Sequence Editor, here you would need to
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9. If you were making an installer, you
could check the "Create installer" box under installer options and
specify a location. Also here you could click on the drivers and
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If you do not wish to create an installer, and you already have a user interface installed, and the TestStand engine on your target machine, you can just copy all of your files to the target machine, and run them normally. We generally recommend building installers, so that any missing dependencies on the target system could be installed, and the TestStand deployment tool takes care of pulling out all the needed files for you (except for the dynamiclly called ones, which is why you need to add them yourself). If you want you can use the deployment tool to create an image and then move that image to the target computer. The image should have all of your non-dynamic files included, but still requires that your system have all needed components installed. Please let me know what part of the deployment, installation process you are having errors, and we can help you troubleshoot. I always recommend trying to deploy a very simple example sequence with no code modules, if you are having problems. This is always a good troubleshooting tip that will help to determine if the problem is with one of your systems, or with your specific sequence file.
Richard S -- National Instruments --Applications Engineer -- Data Acquisition with TestStand

Dynamically called VI becomes broken inside an executable. Error 1003 from "Open VI Reference".

Here's the problem. Dynamically called VI becomes broken inside an executable in debug executable mode Error 1003 is occuring from "Open VI Reference" Block. The computer has all of the necessary drivers, NI-VISA and NI-DAQmx. This executable is a new release of software that currently works on the PC in question. I can using NI-VISA Remote Server control the instruments from my PC using the executable. But when I put the executable on the PC I am getting this error. The only way I have been able to get this to work properly is to build the executable from the console I believe the project was created in, note that the project file has been moved to a network drive and it still works. All of the stations I have opened the project in show the VI that is being called is runnable. I've tried building the executable from the console I am deploying to and the same thing happens.
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I have trolled this forum for idea's and none have made sense to me.
Any input would be greatly appreciated.
-Nate

Two ideas:
Mass compile the project to ensure all linkages are ironed out
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Report back on if either of these actions solves your problem.
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How to dynamically load jar files - limiting scope to that thread

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Can anyone shine some light on this for me and all the others who have wanted to dynamically load classes/jar files on a per Thread basis?

Thanks to everyone - I got it working!
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psuedu code/concept ....
Primary Jar File   - Included in ClassPath
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I would like to know how i can save an byte array to a mat file format (matlab file format '*.mat') within to use the matlab API

So, I search the binary matlab file format('*.mat').

Title:
Moving Data Between MATLAB® and LabVIEW
Problem:
How can I share data between LabVIEW and the MATLAB environment?
Solution:
MATLAB users can move data between the
MATLAB environment and LabVIEW, you have several options. Prior to
LabVIEW 5.1, the only way to transfer data between these two
environments was to use the Save and Load functions. Those are discussed herein.
Beginning
in LabVIEW 8.0, MathScipt was introduced. MathScript is an integrated
part of LabVIEW that you can use to combine intuitive graphical
dataflow programming with math-oriented textual programming. See the
attached links below for more information on MathScript.
Beginning
in LabVIEW 5.1, the MATLAB script node was introduced into the LabVIEW
programming environment. The MATLAB script node makes ActiveX calls to
the MATLAB software from within LabVIEW. This requires that both MATLAB
be installed on the same machine and that a valid license is obtained.
More information on the MATLAB script node can be found in the attached
KB's.
For all versions of LabVIEW, this data transfer can be
performed by saving the data in a file using the MATLAB software and
reading it directly from LabVIEW, or vice versa. In the MATLAB
environment, the command "save" allows you to save the data in
binary format (*.mat) or ASCII format. You also have an option of
saving it in ASCII format using a tab delimiter between data points and
the command "load" allows you to read in the data.
ASCII Format
Complete the following steps to import or export data between LabVIEW and the MATLAB environment using an ASCII file format.
From the MATLAB environment to LabVIEW
To save a vector or a matrix X in tab-delimited ASCII format, enter the following in the command window or m-script file in the MATLAB environment:
>>SAVE filename X -ascii -double -tabs
This creates a file named filename containing data X in tab-delimited ASCII format.
Import the file into LabVIEW using the Read From Spreadsheet File VI located on the Functions»File I/O palette.
From LabVIEW to the MATLAB environment
To export a matrix X from LabVIEW to the MATLAB environment, first save the data in ASCII format in LabVIEW using the Write To Spreadsheet File VI on the Functions » File I/O palette.
Enter the following in the command window of the MATLAB environment, or in the m-script file:
>> LOAD filename
This reads the data into the MATLAB environment.
Binary Format
Complete the following steps to import or export data between LabVIEW and the MATLAB environment.
From the MATLAB environment to LabVIEW
As mentioned above, LabVIEW does not save multiple variables to one
data with extra manipulation, and will not be discussed here.
Therefore, the only way of sending the data from the MATLAB environment
to LabVIEW without tampering with the MAT binary file structure is
using the ASCII format. Also, please bear in mind that you need to have
one file for one variable.
From LabVIEW to the MATLAB environment
Because
the MATLAB software saves data in its own binary format, the "MAT"
file, binary LabVIEW data must be converted to this format prior to
transferring the data. The attached examples can be used to save
LabVIEW data in the MATLAB software format. The convenience of the .MAT
file format is that more than one variable can be saved in the same
file. The example shows saving seven variables to .MAT format; the
example can be modified for any number of variables.
Once this data is saved from LabVIEW, it can be read into the MATLAB environment, using the following command:
>>LOAD filename
The Who
command can then be used to display all the seven variable names, and
you can display the content of them by entering the variable names at
the command prompt as usual.
MATLAB® is a
registered trademark of The MathWorks, Inc. Other product and company
names listed are trademarks and trade names of their respective
companies.
| Michael K | Project Manager | LabVIEW R&D | National Instruments |

Can we dynamically change the file name in dst file in Report 6i, Urgent!

I am calling dst file to generate file with diffenet format.
but name of the pdf file should generate dynamically everytime i call dst file,
is there anyway to set the desname in dst file in Report 6i? Any solution,
Thanks for your help

Hi Roshan,
Create two RKF's one for Normal Invoices and another for canceled invoices, for doing this you should have some characteristics or some status value which will identify the normal and canceled invoice.
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Go to RKF properties of canceled invoice and mark the check box +/- Reverse sign, which will show the negative amount.
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Can i call a file which is not bundled with war file

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Do you have a small code sequence that you can share with us?

VI Profiler on dynamic called VI archiecture

I have a question about debugging to put to the Gurus out there.
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Any ideas how I should be debugging where the time is being lost? - VI profiler is not helping enough.
Cheers
James

James W wrote:
Ben wrote: Use the VI itself to time how long it takes by getting the time before and after.
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1) Def FP updates (to shut of screen updates), hide the MCLB, update it, un-hide, un-defer. passing data directly to the MCLB via terminal is fastest but can't do color stuff without property nodes.
2) Pre-load
Ben
1)
And here comes the killer...
If I defer FP updates, the code runs slower!!! not faster.
If I change the MCLB from Synchronous to Asynchronous using the drop down menu before I run it has no effect on the run time.
If I change the MCLB from Synchronous to Asynchronous at runtime using at property node (not meant to do this), I get error 1073 and the GUI stops updating (sometimes while redrawing the screen half way down), but wiping over the FP window 10 seconds later shows the code has run significantly faster.
2) How do you preload 120 different tests all with the same VI pattern (generated from the same template) and ensure you have the correct VIs in memory without running them? (and producing loads of errors - these tests all logs any errors they produce to files)
I asked for the Guru's I didn't think I was going to the the Knights so fast!! Thanks Ben
Lacking Guru's you'll have to settle for me for now.
If the defer makes it go slower the issue may indeed be the FP updates since the defer forces an extra update when set.
Is is slower if do the next two steps of hiding updating and un-hiding?
If you toss all MCLB code does it run fast enough to make you believe it is the GUI update that is hitting you?
Can you post image of your code as png or jpg?
How much data is in the MCLB?
This cloud has links to LabVIEW_Performance threads. Not sure if any of those threads ring a bell.
Please show us the code to get the most out of us.
Not sure about Q#2 but I would open them and keep a ref to each in array so that they are loaded when I need to run them.
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

How to pass command line parameters in calling ant file

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Re: Data Loading
Message was edited by:
Jens Petersen

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Hello,
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Message Edited by Jeff B on 02-16-2006 07:44 AM

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Undefined first referenced
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All the best,
Yunhong

hello,
Unfortunately, matlab doesn't exist on solaris x86 platform. They only deliver matlab for sparc platform, and i'm wonder if it is EOL'ed now?
Sun never convince Mathworks to offer matlab for solaris x86, so you have to use (if it is possible) other software like Mathematica (money) or Scila, Sage, Octave, ... (free)
We are several Mathworks customers who asked Mathworks for that, and i never understand why people continues to use old or slow sparc machines to compute.
Anyway, today, solaris isn't a right choice for computing, but i'm waiting for Sun to prove that i'm wrong.
(my main compute server is a Sun V40z with Solaris 10, but the next one will be a Sun X2270 with CentOS, because matlab)
gerard

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Needful will be rewarded with points

Hi,
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Reward If Helpful

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Dynamically call Matlab file

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