Error : Operands to the || and && operators must be convertible to logical scalar values.

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Moshe
Moshe 2016-12-1
回答： Preethi 2016-12-1
Hi ,
I wrote this function:
function [flag_SO_Sell,flag_SO_Buy,flag_SO_Hold]= SO_Sub_Rule(Sthochestic_Osilator,High_SO,Low_SO)
% function [flag_SO_Sell,flag_SO_Buy]= SO_Sub_Rule(Sthochestic_Osilator,High_SO,Low_SO)
%%SO Rule
% Need to add for loop with index
% Sthochestic_Osilator([1:end],2)=Sthochestic_Osilator([]);
for i=1:length(Sthochestic_Osilator)
if Sthochestic_Osilator > High_SO
% 'Sell'
flag_SO_Sell=-1;
else if Sthochestic_Osilator < Low_SO
% 'Buy'
flag_SO_Buy=1;
else if (Sthochestic_Osilator > Low_SO) && (Sthochestic_Osilator < High_SO)
flag_SO_Hold=0 ;
% % disp ('Hold')
end
end
end
end
with any idea why i got this error from matlab in the command line: Operands to the and && operators must be convertible to logical scalar values.
Error in SO_Sub_Rule (line 13) else if (Sthochestic_Osilator > Low_SO) && (Sthochestic_Osilator < High_SO)
can someone tell what does this error mean?

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回答（1 个）

Preethi
Preethi 2016-12-1
hi,
the output of < and > gives a vector since Sthochestic_Osilator is a vector. When using short circuit operators like '&&' the operators should be scalar. Using binary '&' in place of '&&' may help

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