How to extract a data from a table using a string stored in a variable

I have a table T with a column called 'Rules_updated'. The extraction is as simple as write

T.Rules_updated

However, in other cases the column could be called 'RulesUpdated'.

I want to save the name as a variable and use the new variable to extract the data from the column. For example:

RulesUpdatedColumn='Rules_updated';

RulesUpdated=T.RulesUpdatedColumn;

Answer 1

[Cris LaPierre]

See the Access Data in Tables page.

a = (1:5)';
A = table(a)

A = 5×1 table
    a
    _

    1
    2
    3
    4
    5

varname = "a";

A.(varname)

ans = 5×1

1 2 3 4 5