Error (1046) using matlab script

Hi ,
im trying to use matlab script Labview , i've got matlab installed.
when im running the VI , i'm getting an error 1046 , i tried to search the community ,
and i've been told to check the "choose script server" , i dont know why , but i it's "grayed" ,
and i cant change anything.

Cobmetal,
Looking at the following KnowledgeBase, it looks like MATLAB® may need to be registered as an ActiveX server first.
http://digital.ni.com/public.nsf/allkb/5BECAA32D63921628625670C005BDA1A?OpenDocument
Mathworks has good documentation about how to register MATLAB as a COM Automation server in the Windows registry when launched. I would try to do that if the option to choose script server is greyed out (Ctrl+F regserver).
http://www.mathworks.com/help/matlab/ref/matlabwindows.html
MATLAB® is a registered trademark of The MathWorks, Inc. Other product and company names listed are trademarks and trade names of their respective companies.
Matt J
Professional Googler and Kudo Addict
National Instruments

Similar Messages

  • How to do complex engineering calculation in labview.I tried using MATLAB script

    Hello,
    I am trying to use matlab script node to solve two complex equation.But i get different  errors everytime i run my program.sometimes 1048 sometimes 1050 and sometimes it says LABVIEW could not extract variable from Matlab.I am attaching  my MATLAB script node with this thread.Please Help me out to get rid of this problem.
    I am  using LV-8 and MATLAB R-2006a.
    Attachments:
    matlab.vi ‏10 KB

    Hi Praween,
    beside my little MatLab knowledge I tried to replace your formula with equivalent LV code...
    Best regards,
    GerdW
    CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
    Kudos are welcome
    Attachments:
    matlab_lv80.vi ‏18 KB

  • Using Matlab script in Labview

    Hello,
    I am trying to use matlab script in labview to post process the sampled signals from DAQ(attached is the vi I tried)
    After every 10 seconds I want to the send the sampled voltage data to matlab scritp block which does 1) detection of peaks using peakdetection function and plots the obtained peaks on the sampled signal 2) calculates standard of 10 secs data and plots on chart.
    But I am confused of 1) how to call the peakdetection function inside the matlabscript block
    2) How to send the 10secs data of voltage and time values to the matlab script block
    3) How to plot the signal and detected peaks on the same plot (which can be done in matlab using holdon as shown in the atached vi).
    Can someone suggest for implementing these .
    Thanks.
    Solved!
    Go to Solution.
    Attachments:
    Labview&Matlab.vi ‏55 KB

    Thanks  GabeG,
    Now, Labview&Matlab_TestNoAq.vi  is woking Good and for the second one  Labview&Matlab_TestAq.vi it is showing error as shown in the attached image when these ines of code are present in the matlab scrtip 
    subplot(2,1,1),plot(maxtab(:,1),maxtab(:,2),'*r');
    SDN=std(maxtab(:,1));
    and SDN output of the Matlab script
    but when I removed these it is working fine(but not showing the detected peaks).
    Can you suggest me a solution for the above and also can I know the best method to add one more channel that samples another device signal which has to be processed in this same way(Signals sampled from 2 devices have to be porcessed in this same way).
    Thanks.
    Attachments:
    Script_Error.JPG ‏133 KB

  • How to load a variable using MATLAB Script?

    I need to load a selected variable from .mat file, using MATLAB script , and analyse it.
    the attched shows my vi, there are two inputs nodes 'file' contains the .mat file path, and 'varn' contains varibale name in that .mat file which can be selected by user. Using " load(file)" the whole .mat file is loaded in the workspace and become avaiable at output node, however I am not able to pass a selected variable name through string "varn" input, MATLAB script does not recognize the variable.
    any idea to reslove it is realy appreciated.
    Attachments:
    load a variable.JPG ‏18 KB

    Download the VI and .MAT file. Run the VI, and it'll plot the data inside of the .MAT file.
    Andy Chang
    National Instruments
    LabVIEW Control Design and Simulation
    Attachments:
    testfile.zip ‏5 KB

  • Open a file using matlab script block

    Hello!
    I want to open a file from a specified directory using matlab script block.
    The input of this block is a string with file's name......but it doesn't work in this way. I have to change the input data or I have to change it  into matlab matlab script?
    Some idea?
    Thanks!
    Attachments:
    example.PNG ‏4 KB

    Ooooppss!
    My computer is crazy....sorry.
    I'm near to solve my problem...
    The problem is that I have a column of strings like this
    str=['labview'
            'labview2'
           'labview3'
            'labview4']
    I use the double command but the byte array to string block only converts me an element, do you know is exist another block to change all the elements.
    I've tried to do with a for loop block....using an index array and changing with i the index element, but it doen'st work.
    You have some idea?

  • Using matlab script

    Hello!
    I'm using matlab script block in my aplication. The m-file (from matlab) contain an 'if' that depends of an input of labview.
    I want to pass trough this condition only once when input's value changes, but labview "covert" this 'if' in a 'while' and pass trough this sequence n times.
    How can I to impose to pass throug the sequence once the input's value change. It's better to specifie it from matab or from labview.
    Thank you in adavance 

    What is surrounding the matlab script block? LabVIEW should be modifying the matlab code, it should be connecting with matlab and matlab executes its code, returning the results to LabVIEW. Can you do a screen capture of the part of the code that contains the matlab stuff? If yes make sure that it is saved as a .jpg (not .bmp!) for size reasons. If not, if you can send the part of your code that includes the matlab stuff that would help.
    P.M.
    Putnam
    Certified LabVIEW Developer
    Senior Test Engineer
    Currently using LV 6.1-LabVIEW 2012, RT8.5
    LabVIEW Champion

  • Error 1050 with matlab script

    Hi , i'v built an vi which sampling saving and playing audio files , i've also added matlab script for data analysis.
    the script tested in matlab and in matlab works great , when im trying to use it in labview i'm getting an error while the matlab sciprt executing . "Error using griddedInterpolant ....."
    i think that the error occures whe trying execute the command : "Sigitp = interp1(clptv, clpsig, tv, 'linear'); "
    moreover i cant figure how to read the saved filed when the loop is finished.
    I cant figure out what is the problem .
    here is the vi : 
    i've also included the vi 

    Cobmetal wrote:
    Im novice to labview , and im learning a lot from NI community , thank you for your suggestion , i will go over it , and try to learn the proper way to implement such tasks in the future.
    Thank You.
    That's excellent!  I believe that if you truly understand dataflow, you will see why your solution isn't the best one.  ASK QUESTIONS IF YOU DON'T UNDERSTAND SOMETHING.  I put that in bold caps because we are here to help you understand and get better. 
    Example:
    "According to what I learned about dataflow, I think this part of my solution mentioned above can look like this.  (Upload picture.)  Does that seem right to you?"

  • Creating a random noise (Gaussian) using Matlab Script

    Hello,
    Since I only have Labview 6.1 base, I can't use the white-noise generator in Labview. I'm thinking of using the Matlab Script. I have Matlab 2006R installed in the same computer. However, I tried running the program and nothing happened (I used the help example "a=rand(50);surf(a)" in the Matlab Script.
    Why it's not calling the Matlab, or is there a better way to create a Gaussian distribution in Labview 6.1 Base?
    Thanks a lot!

    Hello,
    Why are you unable to use the Gaussian White Noise VI in LabVIEW 6.1?  It is under the Analyze >> Signal Processing >> Signal Generation palette.  I have attached a simple VI that illustrates creating a matrix.
    If you wish to use the MATLAB® script node, let's first make sure it is working correctly.  Try opening one of the LabVIEW shipping examples.  Browse to <LabVIEW>\examples\scriptnode and open "HiQMATLAB_Fractal.llb."  Then open "MATLAB Fractal.vi."  Run the VI.  Do you get any error windows that pop up?  If not and you see a picture of a fractal appear, then the connection to the MATLAB software is working correctly.  In your VI, try creating an error out indicator from the MATLAB script node and see if any errors appear.
    If you do see an error in the shipping example, it means there is a problem with the software connection.  Make sure that you have launched the MATLAB software at least once after you installed it.  This will set up the necessary connection information.  Then launch LabVIEW.  If this isn't the issue, we could try manually restoring the server commands.  Make sure LabVIEW and the MATLAB software are not running.  Go to a command prompt, browse to the MATLAB bin directory (e.g. MATLAB\R2006b\bin), and type
    matlab -regserver
    Quit the instance of the MATLAB software that appears and launch LabVIEW.  If this also fails, please post again with any error information you receive.
    Also, the rand function in your script will not generate a Gaussian distribution. You will need to use the randn function instead.
    MATLAB® is a registered trademark of The MathWorks, Inc.
    Grant M.
    Staff Software Engineer | LabVIEW Math & Signal Processing | National Instruments
    Edit: For some reason, I am unable to attach the VI.  I have included a picture instead.
    Message Edited by GrantM on 08-08-2008 02:50 PM
    Attachments:
    Gaussian Matrix.png ‏35 KB

  • Permission Denied Error when calling Matlab script from LabWindows​/CVI

    Hello,
    I am reading in data from a DAQ and am writing it to a .csv file in LabWindows/CVI.  I am then sending this data to Matlab to be filtered.  I would like the filtered data to be accessed by LabWindows/CVI so that I can display it as a strip chart.  I have gotten everything to work except the writing to a file in a Matlab script that is called from LabWindows/CVI.  I am basically using the shipped example in found in the activex demo. (http://zone.ni.com/devzone/cda/epd/p/id/2994). I select the script that I want to run and each time it tries to open a file with write permissions I get a "Permission Denied" error.  This occurs when using fopen() in Matlab.  I have also tried using csvwrite() as well as dlmwrite().  Each one gives me a similar error.  The script currently does not try to do any data processing.  It just opens the file, if it is successful it then prints "hello" and then closes it.  The script works well when it is run in Matlab, just not when it is called in LabWindows/CVI.  Below is the script.  Any thoughts, comments or suggestions are greatly appreciated.  I am also open to using other approaches for sending data between Matlab and LabWindows/CVI.  Thanks in advance!!
    fclose('all');
    [file, errmsg] = fopen('out.txt', 'w');
    if(file<0)
        disp(errmsg)
    else
        fprintf(file, 'hello');
        fclose('all');
    end;
    [file, errmsg] = fopen('out.txt', 'w');
    if(file<0)    
    disp(errmsg)
    else  
     fprintf(file, 'hello');    
    fclose('all');
    end;

    I am using Windows 7.  I am running CVI as an administrator and was able to get rid of the "Permission Denied" error by going into the User Account Controls in windows and changing it to "Never Notify".  However, this did not fix the problem of Matlab not being able to write to a file when the script is run from CVI.  In the Matlab code below, It now gets in to the "else", suggesting that fopen() returns a good file handle.  After getting in to the else statement, it will not actually write to the file, nor does it create it.  However, I can make changes to the plot settings and those appear.  Everything is functional when run from Matlab but when run from CVI, things get screwy with opening the file for writing.  It handles the read well.  It seems like there would have to be some file permission errors but, in the CVI program, I open and write to the file "in.csv".  Any help is greatly appreciated.
    clear;
    fclose('all');
    t = zeros(1000);
    t = csvread('in.csv');
    for i=1:1000
        t(i) = t(i)*4;
    end;
    [file, errmsg] = fopen('out.txt', 'w');
    if(file<0)
        disp(errmsg)
    else
        fprintf(file, 'goodbye');
        for i=1:1000
            %t(i) = t(i)*3;
            fprintf(file, '%f,', t(i));
        end;
        fclose(file);
        plot(t/3, t);
        ylabel('t');
        xlabel('Time (s)');
        title('Is this really working?!?');
    end;
    Thanks,
    Chris

  • Error when using javax.script package

    Hi
    I want to call a javascript method from a .js file from .java class.
    when i searched, i came to understand that using jdk1.6 i can use javax.script package tht provide me what i needed.
    using the reply i got from i earlier post, i tried one example.
    public void show() {
    ScriptEngineManager engineMgr = new ScriptEngineManager();
    ScriptEngine engine= engineMgr.getEngineByName("JavaScript");
    try {
    engine.eval(new FileReader("D:/ShowScript.js"));
    Invocable invocableEngine = (Invocable) engine;
    //show_message is my function in ShowScript.js file
    invocableEngine.invokeFunction("show_message",null);
    } catch (Exception e) {
    e.printStackTrace();
    ShowScript.js
    function show_message()
    println("===> hi");
    alert("hi");
    When i execute my program, im getting the following error
    javax.script.ScriptException: sun.org.mozilla.javascript.internal.EcmaError: ReferenceError: "alert" is not defined. ( #8) in at line number 8
    at com.sun.script.javascript.RhinoScriptEngine.invoke(RhinoScriptEngine.java:184)
    at com.sun.script.javascript.RhinoScriptEngine.invokeFunction(RhinoScriptEngine.java:142)
    at testbuiltin.backing.Show_alert.show(Show_alert.java:81)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.sun.el.parser.AstValue.invoke(AstValue.java:151)
    at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:283)
    When i remove the alert() from the js file, the println is working. But what i neede is the alert.
    Can anyone plz help me to solve this problem.

    As you're talking about "backing beans", are you using JSF?
    After all, this is definitely not the way to let Java and JS interact with each other. Java runs at the server side. JS runs at the client side. Java can write JS code to the response, but definitely cannot call it. JS can access the HTML DOM and invoke requests to the server (form.submit() and AJAX and so on) and send parameters along the request, but definitely cannot call Java classes and methods independently. Nothing more and nothing less than that.

  • Using matlab script block

    Hello!
    I'm using a matlab script block and I have a problem that i don't how to solve it,
    I want to import a column that in matlab is cell array or char array type. When you create an output in matlab script block you have to specify the data type....I choose string, but with this option you can only import one string....and I want to import a whole column.
    Someone knows how I have to do to import this data type? I have to do some changes to the data from matlab or I have to use some especific block in labview to adapt the data.
    Please help me!!
     Thanks!!!

    Ooooppss!
    My computer is crazy....sorry.
    I'm near to solve my problem...
    The problem is that I have a column of strings like this
    str=['labview'
            'labview2'
           'labview3'
            'labview4']
    I use the double command but the byte array to string block only converts me an element, do you know is exist another block to change all the elements.
    I've tried to do with a for loop block....using an index array and changing with i the index element, but it doen'st work.
    You have some idea?

  • Possible threadsafe issues using Matlab scripts?

    Hi all,
    I'm developing an application in Labview 6.1 that makes extensive use
    of Matlab scripts.  The application executes the same set of
    scripts for multiple data sources, and keeps track of the inputs and
    outputs for each data source separately.  I've been noticing that
    the application produces the correct results when running only one data
    source, but that the results are often incorrect when I run it against
    multiple data sources.
    I've done some investigation, and have found that all Matlab scripts
    share a common memory workspace in Matlab.  That is to say that if
    I have ScriptA that takes variable X as an input, and ScriptB that does
    not, ScriptB nonetheless has access to variable X in its workspace
    (from the last time ScriptA was called).  This doesn't pose a
    problem to me directly, but it has made me wonder if there are
    potential threading issues in the scripts.
    Consider the following scenario with one script and two data
    sources.  I'm wondering if this scenario is possible in Labview:
    1.  Thread1 calls ScriptA, passing data from SourceX.
    2.  During Matlab execution (somewhere in the middle), Thread1 is suspended.
    3.  Thread2 calls ScriptA, passing data from SourceY (data have the same variable names, since it's the same script).
    4.  Thread2 finishes ScriptA execution uninterrupted with SourceY data.
    5.  Thread1 is reactivated, but now the Matlab workspace data has
    been replaced with SourceY.  So, Thread1 started with SourceX
    data, but finished with SourceY data.
    6.  An incorrect result for Thread1 is produced, because the wrong data was processed.
    Clearly I could get around this problem with a semaphore, but first I'd
    like to know if this scenario can even happen.  Are Matlab scripts
    treated as atomic operations in Labview, or can the threads be
    suspended midway through execution?
    Thanks for your help!
    cjb

    Hello,
    No. LabVIEW will definitely not compile a VI while it's running - I think that would be, even conceptually, impossible.  In fact, some properties (accessed via property nodes) are not editable at run-time for basically that reason, that a recompile would be necessary in order for the affect to take place, and the recompile can't take place at run-time!
    It is indeed strange behavior, particularly because it is intermittent (which does hint at a threading issue, or some factor outside the development environment).  Can you try moving the initialization to LabVIEW?  I have attached an example of a so-called functional global variable (a simple code module in this case).  It has two "states" (which are cases) - one is initialize and the other is the "usually executing case."  The initialize case is used to initialize the shift register to an array of 50 doubles, where the other case will compute the running average, min, and max across the 50 most recent random numbers generated.  The 50 data point code module.vi is the code module, and it is called by Use 50 data point code module.vi.  When you run Use 50 data point code module.vi, be sure to toggle the initialize boolean so that the initialize case executes once to allocate and initialize an array with 50 elements; when you toggle it back then it will execute the other case on each iteration, and begin computing the statistics noted by keeping an array with the 50 most recent random data points generated.
    I hope this helps and that you are able to incorporate a similar code module into your application to avoid the intermittent errant behavior!
    Best Regards, and feel free to post again with updates!
    JLS
    Best,
    JLS
    Sixclear
    Attachments:
    Use 50 data point code module.zip ‏27 KB

  • Compiler Error with simple vi using MatLab script nodes

    While attempting to build a simple vi to test the capabilities of LabView's interface with MatLab, I received a compiler error message that said I should report the problem to National Instruments Tech Support. The error said, "reference to undefined label from: refPC=0x41C." I've attached the vi that created the error. I am using LabView 7.0 on a PC running Windows 98.
    Attachments:
    Compliererror.vi ‏11 KB

    I don't know if this will help your problem, but there is a fix for some problems with LabVIEW 7.0 and Matlab:
    http://digital.ni.com/public.nsf/websearch/4475BC3CEB062C9586256D750058F14B?OpenDocument
    Good luck,
    -Jim

  • "Object Required" error when using the script block from the code behind

    I try to use the following script block on the code behind page
    <script defer='true' id='NavID' type='text/javascript'>Nav();</script>
    and the function Nav() is on the .aspx page. It gives me the "Object Required" error message. BUT if I add an alert("hello!!!") line inside of the Nav() function, it works fine after the user closes the alert box. Has anyone experienced a similar problem? Please help. Thanks.

    There is no way to troubleshoot this by looking at a picture of the diagram. LabVIEW 6 is almost prehistory and many things have changed, especially the file IO all looks different so it is impossible to tell what you are doing.
    Error 7 is file not found, so most likely your string operations are not correct. What are the full strings? What is the final file name (maybe you are missing a "\" or maybe you are on a different OS type). Put an indicator at the path wire to see what's happening!
    Is this a datalog file?
    (Overall, the code is a bit suspect. Nobody needs a seven frame flat sequence. ) Why do a control and an indicator have the same label?)
    LabVIEW Champion . Do more with less code and in less time .

  • Matlab script error 1050

    Hi All,
    I am using MATLAB Script in LabVIEW. But there is error 1050. 
    Could you take my attached script and figure it out for me? Thanks a lot!
    elephant
    Attachments:
    MATLAB SCRIPT Error.png ‏35 KB

    I am also getting error 1050. The script works fine in Matlab with the same parameters. But in Labview, the following error occurs :
    Error 1050 occurred at LabVIEW:  Error occurred while executing script. Error message from server: ??? Error using ==> mtimes
    Inner matrix dimensions must agree.
    Error in ==> linspace at 22
    y = [d1+(0:n-2)*(d2-d1)/(floor(n)-1) d2];
    . in wgm_Individual_RootSearch.vi
    The script is:-
    format longEng
    [Lre Lim]=meshgrid(lambda0_re,lambda0_im);
    row=0;
    col=0;
    R_=zeros(N1,N2);kco=zeros(N1,N2);kc=zeros(N1,N2);M1=zeros(N1,N2);M2=zeros(N1,N2);
    mn=1e5;%minimum value
    while(mn>tol)
    L=Lre+1i*Lim;%L becomes a 2D mesh with all possible combinations of real and imag
     kco=(2*pi./L)*nco;
            kc=(2*pi./L)*nc;
            M1=nco/2*(besselj(m-1,kco*p1)-besselj(m+1,kco*p1))./besselj(m,kco*p1);
            M2=nc/2*(besselh(m-1,1,kc*p1)-besselh(m+1,1,kc*p1))./besselh(m,1,kc*p1);
            R_=abs(M1./M2 -1)';
    mn=min(R_();
    [row col]=find(R_==mn);
    Dr=lambda0_re(N1)-lambda0_re(1);
    Di=lambda0_im(N2)-lambda0_im(1);
    Lr=lambda0_re(row);
    Li=lambda0_im(col);
    lambda0_re=linspace((Lr-(Dr/20)),(Lr+(Dr/20)),N1);
    lambda0_im=linspace((Li-(Di/20)),(Li+(Di/20)),N2);
    [Lre Lim]=meshgrid(lambda0_re,lambda0_im);
    end
    r=lambda0_re(row);
    c=lambda0_im(col);
    Any hints will be really appreciated.. Where am I going wrong please let me know. Thanks  a lot.
    The parameters are in the screenshot below:

Maybe you are looking for

  • BI Content add on installation error in IMPORT PROPER - tp step failure

    Hi All, I have installed ERP 6.0 IDES version in Windows 2003 server with DB2 LUW 9.1 / FP5. I have selected "Row Compression" and "Deferred Table Creation" during installation. Now when I am importing add on BI Content 7.03, I am getting error durin

  • Which speaker system is better: Inspire 5200 or 5300?

    Hi, I'm just about to :smileyindifferent: buy new Creative speaker systems. Unfortunately, in my country and city options are scarce. Only few models are available and I am trying to get a good, decent sound, with good bass for bassy songs (i.e. danc

  • ITS Login screen behavior different on 2 clustered servers(BBP)-config same

    We have a production server(s) for Standalone ITS 6.2 (BBP) with 2 hosts and this is load-balanced and clustered. The templates for (BBP) bbpstart and bbpglobal for the affected instance are identical on both physical servers. The services on both th

  • Final Cut Pro Locks Up

    I am using Final Cut pro studio 6. When I open a second program like photo shop compressor, final cut pro will lock up. The dial will keep spinning. The computer still works that is the other programs but final cut locks. I am using mac G-5 with 2.5

  • No audio on windows xp on macbook pro.

    I recently ran boot camp and installed windows xp onto my macbook pro. I also installed the drivers from the mac osx disc but i still get no audio from my internal speakers or headphones. What do i need to do in order to get audio?