MATLAB: Table linear indexing error

MATLAB

Why am I getting an error when trying to linear index into my table?

>> load patients

>> T = table(Gender,Smoker,Height,Weight);

>> T(:,4)(T.Smoker==1)

Error: ()-indexing must appear last in an index expression.

The syntax being used is trying to index into a table that has already been indexed into. Instead, index only once to get the desired behavior:

>> T(T.Smoker==1, 4)

Alternatively, this can be broken up into two lines of code:

>> temp = T(:,4); 
>> temp(T.Smoker==1,:)

This can be done by indexing into the table with the "order" cell.

Note: Table columns cannot repeat names so "Age" will only appear once, and all subsequent ones will have the value "Age_1", "Age_2"...

>> patients2 = patients(:,order)

You can use the "yyaxis" and "ylim" commands to set the y-limit for both axes:

>> figure

>> yyaxis left

>> plot(1:10);

>> yyaxis right

>> plot(2:2:20);

>> f = gcf;

>> yyaxis left

>> ylim(f.Children, [0 5]);

>> yyaxis right

>> ylim(f.Children, [5 10]);