Hey Sarah,
Let's say you have two tables, as follows:
T1=table((1:10).',(10:-1:1).');
T2=table((11:20).',(20:-1:11).',(1:10).');
To add a dummy column you could write the following;
T1.dummy=NaN(size(T1,1),1);
To concatenate them, ensure firstly that the VariableNames are the same, which ought to be the case anyway except for T1.dummy:
T1.Properties.VariableNames=T2.Properties.VariableNames;
You can then concatenate the tables as follows:
T=[T1;T2];
Finally, with this approach I assume that the values in the last column of T2 are still important (otherwise you could just write a table without the last column of T1)
T=[T1;T2(:,1:end-1)];
EDIT: following comments below.
