Find dictionary entries with value type from Java

Hi,

I am trying to execute from Java and through the feval function the following command:

engine.feval("find",dictionarySectionHandle, "-value", "-class", "Simulink.Parameter");

However I get the following error:

find.
 '-value' is not a valid option to findobj.

In the documentation [Find Function] it specifies that we should call the find function on the list of entries but I have tested the function in MATLAB's command line (as follows) and it works fine.

 find(dictionarySectionHandle, '-value','-isa', 'Simulink.Parameter')

What am I doing wrong?

Thanks

[Fangjun Jiang]

try 'value' without the '-'?

[Beatriz Sanchez]

Thanks Fangjun,

Unfortunately, excuting with

find(dictionarySectionHandle, 'value','-isa', 'Simulink.Parameter')

still complains with the following error:

Error using Simulink.data.dictionary.Section/find
Incomplete parameter-value pair.

[Fangjun Jiang]

The document has an example syntax

foundEntries = find(myEntryObjs,'-value','-class','Simulink.Parameter')

Answer 1

[Donn Shull]

It appears that MATLAB is converting the java String arguments to MATLAB strings which is causing the error for example the pure MATLA, B command:

feval("find", dictionarySectionHandle, "-value", "-class", "Simulink.Parameter")
Error using Simulink.data.dictionary.Section/find
'-value' is not a valid option to findobj.

Produces the same error that your engine command does, while:

feval("find", dictionarySectionHandle, '-value', "-class", "Simulink.Parameter")

ans = 

  3×1 Entry array with properties:

    Name
    DataSource
    LastModified
    LastModifiedBy
    Status

works. You might try the using:

valueArg = engine.feval('char', "-value");
engine.feval("find", dictionarySectionHandle, valueArg, "-class", "Simulink.Parameter")