How do I instert a string in all rows of a table columnI

I am trying to do something that I would think is pretty simple: insert the same string in a new Variable of an existing table with, say 100 rows:

T.NewColumn = 'SomeText';

I keep getting this error: To assign to or create a variable in a table, the number of rows must match the height of the table.

Whatam I dowing wrong?

Answer 1

[Peter Perkins]

You are trying to assign a variable with one row to a table with 100 rows. Scalar expansion doesn't apply here, because you have no row subscript in that assignment. You want either

T.NewColumn(:) = 'SomeText';

or

T{:,'NewColumn'} = 'SomeText';

But hang on - actually that won't work: you are also trying to create a char matrix. Probably not a great idea, for a variety of reasons. In recent MATLAB, change those single quotes to double quotes and use strings. Prior to R2016b, you likely want to assign {'SomeText'}.