I am writing a code and I get the error 'Operands to the || and && operators must be convertible to logical scalar values'... it is an If statement in multiple loops, when the IF has 4 conditions it works fine but at 5th it gives error..

Question

Sohaib Bin Altaf 2017-7-13

0
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https://ww2.mathworks.cn/matlabcentral/answers/348502-i-am-writing-a-code-and-i-get-the-error-operands-to-the-and-operators-must-be-convertible-to

评论： Sohaib Bin Altaf 2017-7-13

works fine with other 4 conditions but when I add another that is data{i,4}==Device(dev) it does not work...

x=[23:1:36]
y=[-30:-1:-32]
APs=[1 2 3 4 12 13]
Dir=[1 2 3 4]
Device=[353111088717176 353111088716343 869090028476779]
p=1;
s=1;
 for   xx=1:1:length(x)
 for   yy=1:1:length(y)
 for   kk=1:1:length(APs) 
 for   dd=1:1:length(Dir)
 for   dev=1:1:3 
       for i=1:1:length(data)
if data{i,2}== x(xx) && data{i,3}== y(yy)  && data{i,4}==Device(dev)  && data{i,5}== APs(kk) && data{i,6}==Dir(dd) ;
          point(p,s,kk,dd)=data{i,8};
          p=p+1;  
           end
       end
  p=1;
   end
   end
   end
   s=s+1;
   end
   end

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Answer 1

Walter Roberson 2017-7-13

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Your data is a cell array, and data{i,4} is a vector or array, possibly a character vector. If you are trying to compare strings you should be using strcmp()