Dot indexing not supportedd

I am trying to write a function which converts all answers to a Likart survey to 1 and 0. The code itself works, but when I trz to run the function itself i get an error stating "Dot indexing is not supported for variables of this type.

Error in funclikart2 (line 5)

header = T.Properties.VariableNames; % keep table variable names"

This is my code:

function T = funclikart2(tabName, sheetnumber)
% check input data type if necessary
T = xlsread(tabName, sheetnumber);
header = T.Properties.VariableNames; % keep table variable names
yesIdx = ismember(lower(T), {'agree', 'strongly agree'}); % index of YES answers
T(yesIdx) = 1; T(~yesIdx) = 0; % assign 1/0 values
T = array2table(T, 'VariableNames', header); % convert back to table 
end % END

Can anyone help me out?

Answer 1

[Jon]

T = xlsread( ) returns an array of double values, not a table so T.xxx is not meaningful

I suggest using readtable instead.