[R] How to merge two tables

[Xiyan Lon]

Dear all,
I am currently studying categorical data analysis, if I have two tables:

R> cross
      sex cross death count
1  FEMALE   WEF   YES    26
2    MALE   WEF   YES    14
3  FEMALE   OGG   YES    32
4    MALE   OGG   YES    43
5  FEMALE   TGA   YES     8
6    MALE   TGA   YES    10
7  FEMALE   WEF    NO     6
8    MALE   WEF    NO     7
9  FEMALE   OGG    NO    26
10   MALE   OGG    NO    12
11 FEMALE   TGA    NO    16
12   MALE   TGA    NO    26

R> age
     sex age death count
1 FEMALE 17Y   YES    16
2   MALE 17Y   YES     4
3 FEMALE 18Y   YES    40
4   MALE 18Y   YES    51
5 FEMALE 17Y    NO    32
6   MALE 17Y    NO    42
7 FEMALE 18Y    NO    26
8   MALE 18Y    NO    15

- How to merge two tables.
- How to expand both tables such as:

sex age cross death
FEMALE 17Y WEF YES
...
FEMALE 18Y TGA NO


Warm regards,
Xiyan Lon

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