# add a row of summary statistics in a table

2 views (last 30 days)
alpedhuez on 18 Jun 2022
Commented: the cyclist on 18 Jun 2022
Suppose I have a table in Matlab:
Then I want to add a summary statistics (sum for the first col and average for the second col)
Then how shall I proceed?

Voss on 18 Jun 2022
t = table({'new york';'chicago'},[10;5],[17;18],'VariableNames',{' ','visitor','temperature'})
t = 2×3 table
visitor temperature ____________ _______ ___________ {'new york'} 10 17 {'chicago' } 5 18
t(end+1,:) = {'' sum(t{:,'visitor'}) mean(t{:,'temperature'})}
t = 3×3 table
visitor temperature ____________ _______ ___________ {'new york'} 10 17 {'chicago' } 5 18 {0×0 char } 15 17.5

the cyclist on 18 Jun 2022
Here is one way:
% The table
T = table([10;5],[17;18],'VariableNames',{'visitor','temperature'},'RowNames',{'New York','Chicago'});
% Numeric variables for the mean
vars = {'visitor','temperature'};
% Calculate the mean
varsMean = mean(T{:,vars});
% Append mean to table, and change the RowNames property of that row
T{end+1,vars} = varsMean;
T.Properties.RowNames{end} = 'mean';
% Display
T
T = 3×2 table
visitor temperature _______ ___________ New York 10 17 Chicago 5 18 mean 7.5 17.5
##### 2 CommentsShowHide 1 older comment
the cyclist on 18 Jun 2022
Oh, sorry. I misread. Looks like you got an effectively equivalent answer.

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