operand (&&) error when trying to set a parameter

I have a block of code that evaluates one matrix, BOX, with anohter matrix, TruveValMat. each of these has 8 values that need to be compared, when they all come back as equal, it enables a button on a GUI:

if  strcmp(TrueValMat{1,1}, BOX(1,:)...
                            && strcmp(TrueValMat{1,2}, BOX(2,:))...
                            && strcmp(TrueValMat{1,3}, BOX(3,:))...
                            && strcmp(TrueValMat{1,4}, BOX(4,:))...
                            && strcmp(TrueValMat{1,5}, BOX(5,:))...
                            && strcmp(TrueValMat{1,6}, BOX(6,:))...
                            && strcmp(TrueValMat{1,7}, BOX(7,:))...
                            && strcmp(TrueValMat{1,8}, BOX(8,:)))
                        set(handles.certifyButton, 'enable', 'on');
                        

I am now getting this error when I run I get up to this part:

Operands to the logical and (&&) and or (||) operators must be convertible to logical scalar values.

is there any way to fix this error?

Answer 1

[Image Analyst]

Simply use isequal():

if isequal(TrueValMat, BOX)
    handles.certifyButton.Enable = 'on'; % Using new and modern OOP way instead of old set() way.
end

[avram alter]

I have an indicator that occurs when each position in BOX becomes equal to the position in TruveValMat. it looks like this:

if strcmp(TrueValMat{1,n}, BOX(n,:)) %cannot sub-index to CELL types normally, must use this method
                        set(handles.Box(n), 'BackgroundColor', 'g');
                    else
                        set(handles.Box(n), 'BackgroundColor', 'r');
end

Box is the name of panel that corresponds to each value of BOX. when all of the panels turn green, that would mean that BOX = TruevalMa at each position. however, despite each box going green, the certify button does not get enabled, whether I use the new OOP method or the old one

[Image Analyst]

Please attach TrueValMat, BOX in a .mat file so people can try things.

save('answers.mat', 'TrueValMat', 'BOX');

Attach a screenshot of your "indicator".