How can I concatenate tables vertically?

How can I concatenate two or more tables vertically if they have the same headers?

Answer 1

[MathWorks Support Team]

To concatenate two or more tables vertically, you can use "vertcat" either as a function or as an operator - just as you would do to vertically concatenate two or more arrays. The headers do not even need be in the same order. Here is an example:

myTable1 = array2table(eye(3));
myTable1.Properties.VariableNames = ["One","Two","Three"];

myTable2 = array2table(2*eye(3));
myTable2.Properties.VariableNames = ["Two","Three","One"];

myTable3 = array2table(3*eye(3));
myTable3.Properties.VariableNames = ["Three","One","Two"];

myTable = [ myTable1; myTable2; myTable3 ]

The documentation page for "vertcat" explains that this function accepts table inputs:

https://uk.mathworks.com/help/matlab/ref/double.vertcat.html#mw_f3bbc20c-c8ab-4a50-b686-3c75b5d71eb4

[Stephen23]

"...if I could create the 10 tables within a loop."

N = 10;
C = cell(1,N);
for k = 1:N
    C{k} = table(...)
end
vertcat(C{:})

Although most likely you would be better off using one table, as they are specifically designed to group data and process those groups, without requiring separate tables.