is an undeclared variable

# 1 02-03-2014 , 04:54 AM

Registered User
Join Date: Mar 2014

Posts: 3

Hello guys,

im new using MEL Script and i cant find the way to solve this problem.
Some body knows why this 2 codes are "undeclared variables"?

What I suppose to do to get them work properly?

Code:

string $objSel[] = `listHistory $obj`;    
string $wireList[] = `ls -typ "wire" $hist`;

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# 2 02-03-2014 , 05:30 AM

Technical Director
Join Date: Feb 2004

Posts: 2,988

1. The variable $hist in your second line doesn't exist.
2. $objSel does not hold the selected objects, so change the variable name.
3. -type is misspelled in the second line.

Imagination is more important than knowledge.

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# 3 02-03-2014 , 06:50 AM

Registered User
Join Date: Mar 2014

Posts: 3

Hi NextDesign,

Even if I run just the first line

Code:

string $objSel[] = `listHistory $obj`;

Code:

string $his[] = `listHistory $obj`;

MaYa gives me an error.
// Error: Line 1.35: "$obj" is an undeclared variable. //

I changed the array $objSel[] to $his as I had in the second line

Code:

string $wireList[] = `ls -typ "wire" $hist`;

and didnt work.

I also tried to change the variable $obj for $geometry (i.e) and didnt work also.

There is something in MaYa 2014 that doesnt allow me to get access to the obj History using

Code:

string $his[] = `listHistory $obj`;

And because the first line doesnt work MaYa cant go thrue to the second code line

Code:

string $wires[] = `ls -typ "wire" $hist`;

Quote

# 4 02-03-2014 , 02:03 PM

EduSciVis-er
Join Date: Dec 2005

Location: Toronto

Posts: 3,374

Anything with a dollar sign in front is a variable that needs declaration. And now you've spelled his and hist differently. Variables have to be named consistently. Perhaps it would be good to do some Mel tutorials or scripting tutorials.

-stwert

Website - Blog - YouTube - Vimeo - Facebook - Twitter

-->How to Effectively Ask Questions on Forums<--

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# 5 02-03-2014 , 06:08 PM

Registered User
Join Date: Mar 2014

Posts: 3

Hi stwert,

Thank you.
Yes I know that everything that has dollar in front is a variable.
Im having Problems to load some selections, that I forgot I change something in the code.

With an small advice from NextDesign I saw the problems and I correct them.
I also thank you for the observation.

Thank you guys.
I found the solution to my script problem.

Cheers!

Last edited by combojerman; 02-03-2014 at 09:05 PM.

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is an undeclared variable

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