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This should work as well
ChPct = ROC(C,1);
ChCol = IIf(ChPct>=Ref(ChPct,-1), colorGreen, colorRed);
Title = EncodeColor(LastValue(ChPct)) + WriteVal(ChPct,1.2);
Bruce
Perth, Australia
-----Original Message-----
Subject: [amibroker] IIf function
Would someone please explain to me why the following code fragment
does not work. It is part of an IB formula for a price display.
ChPct = ROC(C,1);
ChCol = IIf(ChPct>=Ref(ChPct,-1), colorGreen, colorRed);
Title = EncodeColor(ChCol) + WriteVal(ChPct,1.2);
When I try to apply it I get the response "Bad args. 0-th argument
of function call has invalid (or unsupported) type", and also "Error
1. Operation not allowed".
The problem is the condition in the IIf function. I can replace
line 2 with "ChCol = colorGreen" and it works. I can substitute a 1
or a 0 for the condition and get the color switches. The condition
I have set up must evaluate to True (1) or False (0). What am I not
seeing? Thanks for any enlightenment.
HHP
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