[kepler-users] Matlab expression actor

[Daniel Crawl]

Hi Michael,

If you save the plot to a file, you could write the file name
to the output port (type string). You could then display it
with either the ImageJ or Image Display actors.

  --dan



Michael Hernandez wrote:
> Hi Dan,
>
> You were right on the money. That little syntax error has been a pain 
> for some time now. Thanks for the help. One last question I have is 
> what type of class would I need to use for the output port to display 
> a plot that was made in matlab?
>
> Thanks for all the help,
> Mike
>
> On Wed, Mar 4, 2009 at 5:18 PM, Daniel Crawl <crawl at sdsc.edu 
> <mailto:crawl at sdsc.edu>> wrote:
>
>
>     Hi Michael,
>
>     The parameter name that specifies locations of matlab scripts
>     should be "packageDirectories". (The workflow you sent me
>     earlier [matlab_v4.xml], was using "Package Directories").
>
>      --dan
>
>
>     Michael Hernandez wrote:
>
>         Hi All,
>
>         I'm still having trouble with the matlab expression actor. I
>         wrote a code in Matlab, that I'd like to run in Kepler, that
>         calls on other files within the Current Directory. I'd like to
>         get two outputs from my code, so I configured two output ports
>         from the Matlab actor of type double. The output it gives me
>         is the same as the initialized variables I set in the code.
>         The conclusion I came up with is either a) the Current
>         Directory is not set correctly in Kepler, b) it's not running
>         through the While loop I have in my code, or c) the matlab
>         actor in Kepler can't pass variables correctly between
>         functions. Here is the code that I put into the matlab
>         expression actor in Kepler:
>
>         ---------------------------------------------------------------------------------------------------------
>         clear all;
>         warning off;
>         global count ;
>
>         X_ALL(1:14) = 5 ;
>         X_SUB1(1:5) = 5 ;
>         X_SUB2(1:5) = 5 ;
>         X_OLD = X_ALL + 1 ;
>
>         save X_SUB1.mat X_SUB1 ;
>         save X_SUB2.mat X_SUB2 ;
>         count=1;
>
>         while ( (norm(X_OLD - X_ALL) > 0.001) )
>              X_OLD = X_ALL ;
>
>            for i = 1:3
>                switch i
>                  case 1
>                     [result X_ALL] = sys_s(X_ALL);
>                  case 2
>                     [result X_ALL] = subsys1_s(X_ALL);
>                  case 3
>                     [result X_ALL] = subsys2_s(X_ALL);
>                  otherwise
>                     result = 0;
>                     X_ALL = X_ALL;
>                end
>            end
>            count = count + 1 ;
>         end
>
>         X_SUB1 = [ X_ALL(3) X_ALL(8)   X_ALL(9)   X_ALL(10)  X_ALL(11) ]
>         X_SUB2 = [ X_ALL(6) X_ALL(11) X_ALL(12)  X_ALL(13) X_ALL(14) ]
>
>         save X_SUB1.mat X_SUB1 ;
>         save X_SUB2.mat X_SUB2 ;
>
>         ------------------------------------------------------------------------------------------------------------------------
>
>         And what I'd like to output from the code is the modified
>         X_SUB1 & X_SUB2 at the end. But in Kepler, the display shows
>         X_SUB1(1:5) = 5  &  X_SUB2(1:5) = 5 ; which is what was
>         initialized at the top.
>
>         Another question I have is: Is there a newer version of
>         Kepler, or is the nightly build just the newer version??
>
>         Thanks for the help,
>
>         -- 
>         Michael Hernandez
>         University of Illinois - Electrical Engineering
>         SHPE | UIUC Alumni Relations Chair
>         Cell#: 847-736-3889
>         ------------------------------------------------------------------------
>
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>          
>
>
>
>
>
> -- 
> Michael Hernandez
> University of Illinois - Electrical Engineering
> SHPE | UIUC Alumni Relations Chair
> Cell#: 847-736-3889