I'm a newbie coding titanic but got stuck with an error

Titanic_test = readtable('test.csv');

survived=ones(418,1);
class=Titanic_test(:,2);
sex = Titanic_test(:,4);
age_test = cell2mat(Titanic_test(:,5));
embarked=Titanic_test(:,11); 

It keeps showing this :

Error using cell2mat (line 42)

Subscripting into a table using one subscript (as in t(i)) is not supported. Specify a row subscript and a variable subscript, as in

t(rows,vars). To select variables, use t(:,i) or for one variable t.(i). To select rows, use t(i,:).

Error in sample (line 43)

age_test = cell2mat(Titanic_test(:,5));

Answer 1

[Walter Roberson]

Titanic_test = readtable('test.csv');

That returns a table object.

age_test = cell2mat(Titanic_test(:,5));

Using () indexing on a table object returns a table object. You cannot use cell2mat() with a table object.

If you are wanting to get at the numeric values you should use

age_test = Titantic_test{:,5};

or use an appropriate named variable such as

age_test = Titanic_test.Age;

Note that your lines such as

class=Titanic_test(:,2);

are also creating tables .

Also note that it is not a good idea to use test as a variable name, as that interfers with using the function class

[Ryan Limsui]

i tried using {} but it tells that it is an unidentified variable

ex. if i follow your code

result:

Undefined variable Titantic_test.

Error in sample (line 40)

age_test = Titantic_test{:,5};

[Walter Roberson]

Could you confirm that

Titanic_test = readtable('test.csv');
age_test = Titantic_test{:,5};

is telling you that Titanic_test is not defined in the second line (even though it was assigned on the line before) ?

[Ryan Limsui]

oh it worked already sorry! got the wrong spelling :> Thank you veryy2 muchhh