Official Wishlist Request #4
Fix the formula functions IsDefined() and IsUndefined.

Evaluates an expression on the left side of a chart, if the exression is true will return an expression, if false will return another expression: beats this function.....

if( isDefined( Mov(c,200,S) ) , mov(c,200,s) , C )


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wabbit :D

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Mr Wabbit,

I understand the problem you are facing is not due to the IsDefined() or IsUndefined() functions. It might be due to the behaviour of IF() function. It seems IF() functions expects valid return values for both the returned options to return one of them, otherwise you will get NA plot.

Regards

SMG