%% Number of Variables in Table
% Create a table, T.

LastName = {'Smith';'Johnson';'Williams';'Jones';'Brown'};
Age = [38;43;38;40;49];
Height = [71;69;64;67;64];
Weight = [176;163;131;133;119];
BloodPressure = [124 93; 109 77; 125 83; 117 75; 122 80];

T = table(Age,Height,Weight,BloodPressure,'RowNames',LastName)

%
% Find the number of variables in table T.

W = width(T)

% T contains 4 variables; width does not count the row names.
% The variable BloodPressure counts as one variable even though it contains two columns.
% Copyright 2012 The MathWorks, Inc.