*createstringarray

Altair Forum User

Hello,

 

I have written a TCL script that selects certain elements in my mesh. I want to have these elements put into a string array, so I can use this array to update a certain NASTRAN card, in comments, so I can use them later on in a different routine. The problem now, however, is whenever I try to use *createstringarray it gives back a 0 in the left corner.

 

The string is in a variable that needs to be substituted into *createstring array:

 

set elements {213 5342 53 213 642};

set $str [subst {\$BSURF 1 $elements}];

(Note that the BSURF is commented via $, hence the backslash)

 

*createstringarray 3 '\$beginbsurfs' $str '\$endbsurfs'

 

This following procedure returns a zero. What am I doing wrong?

 

Thank you for your help and time!

 

Jeffrey

Altair Forum User

Hi Jeffrey,

 

please try the the following in line 2

 

set str [subst {\$BSURF 1 $elements}];

 

Only access to a variable needs a '$', not at creation time...

You can insert a check after this line:

 

tk_messageBox -message 'String : $str'
 

Here you need the '$'

 

 

Regards,

Mario

Altair Forum User

Hello Mario,

 

The '$' was a typo from my side. It appears that the $elements variable that is created in HyperMesh causes an error, while using a user created variable with set numbers seem to work perfectly:

 set elements {213 5342 53 213 642};
 set str [subst {\$BSURF 1 $elements}];
 *createstringarray 3 '\$beginbsurfs' $str '\$endbsurfs'

Works. The following does not:

$elems is a list created in HyperMesh by means of a TCL script. This is just an ordinary but lengthy list.

 set str [subst {\$BSURF 1 $elems}];
 *createstringarray 3 '\$beginbsurfs' $str '\$endbsurfs'

Maybe the error window output gives more insight of what the problem is?

 0
     while executing
 '*createstringarray 3 '\$beginbsurfs' $str '\$endbsurfs''
     ('uplevel' body line 1)
     invoked from within
 'uplevel #0 {*createstringarray 3 '\$beginbsurfs' $str '\$endbsurfs'}'
     invoked from within
 'interp eval $::tkcon::OPT(exec) $args'
     (procedure '::tkcon::EvalSlave' line 2)
     invoked from within
 'EvalAttached $cmd'

Thanks for your help and time.

 

Jeffrey

Altair Forum User

Hi,

 

sry, can't detect any error. For me it works for elements or elems.

 

Please check whats inside of $elems

 

set elems {213 5342 53 213 642};
tk_messageBox -message 'Elementlist : $elems'

set str [subst {\$BSURF 1 $elems}];
tk_messageBox -message 'String : $str'

*createstringarray 3 '\$beginbsurfs' $str '\$endbsurfs'
 

 

Normaly TCL strings are not limited, but maybe *createstringarray has a limit in string lenght. Please check it too.

 

Regards,

Mario

Altair Forum User

Hello Mario,

 

I think the string length is limited. I've created a workaround, grouping ranges of values together. The string created is far smaller than the original string and it does create the string via this method.

 

Nonetheless, I've checked the items inside $elems and the information is just numbers, element ID numbers.

 

How and where could I check the maximum length of *createstringarray?

 

Thank you,

 

Jeffrey

Altair Forum User

Hi Jeffrey,

 

i don't know a answer, so it is better to contact the Altair hotline.

 

Regards,

Mario