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jibadajaba
03-25-2012, 06:16 PM
Hello, I'm new to mel and am just starting the DVD from gnomon for introduction to mel.

However, I'm perplexed by a simple conditional...example that he gave. Seemed to work for him but not for me. I can get conditionals to work in other ways but not this particular string. Any insight would be greatly appreciated.

First off he created a polySphere

then ran the string

//scaleZ is a variable

float $scaleZ = `getAttr pSphere1.scaleZ`;

//change the color to red when $scaleZ bigger than 2

if ($scaleZ > 2);
setAttr "lambert1.color" 1 0 0;
else
setAttr "lambert1.color" 0 0 1;

The error I get is "// Error: else //

// Error: Syntax error //"


I can run each section individually, but when running the conditional things seem to run into a snag with "else." Any thoughts? Also, I also tried it with the {} before the setAttr lines. Didn't work this way either. I'm sure I'm missing something pretty simple.



Thanks in advance. When learning mel, you got to just love syntax.
JayHoo
03-25-2012, 06:55 PM
hi, quite simply:

float $scaleZ = `getAttr pSphere1.scaleZ`;
if ($scaleZ > 2)
{
setAttr "lambert1.color" 1 0 0;
}
else
{
setAttr "lambert1.color" 0 0 1;
}
jibadajaba
03-25-2012, 07:23 PM
Dude you rock. There wasn't a ; at the end of - if ($scaleZ > 2)

I went back to the video and he didn't have it either. I just inserted as I'm in the habit of ending every line now with ;

But it does make sense. The logic of the thought is continuing not ending.

Thanks bro for cluing me in.
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