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Control Error Expression
I’m using an expression with “sourceRectAtTime ()” in the Scale of a text. Works correctly, but when I turn out the text completely, the expression results in an error. Because try to find a value in “sourceRectAtTime ()” which is 0, but my expression is a calculation that divides a value by “sourceRectAtTime ()”. And can not divide a value by 0, this is the error.
Is possible use a try/catch block which will test a block of code for errors while executing; if an error in the try block occurs, then the catch block is executed.
But I do not understand how it applies.
- I want to know how to use it for use when no letters in the text layer, not cause mistake, just turn off the expression.
I want to know, also:
- How to represent “None” in an expression?
I need use this Expression, adding a control of Errors.
s = 70/sourceRectAtTime().height * 100;
[s,s]Thanks.
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5 Replies
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there’s a few ways to handle it. try this:
h = sourceRectAtTime().height;
if (h=0) s=0 else s = 70/h*100;
[s,s]Kevin Camp
Art Director
KCPQ, KZJO & KRCW -
sorry Tiago, I made a mistake in the syntax.
try this:
h = sourceRectAtTime().height;
if (h==0) s=0 else s = 70/h*100;
[s,s]Kevin Camp
Art Director
KCPQ, KZJO & KRCW -
Awesome! Work perfectly.
How to represent “None” in an expression?
Thank you so much!
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you can usually represent none with empty quotes: “” or ”
Kevin Camp
Art Director
KCPQ, KZJO & KRCW -
Thank you!
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