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Stata Technical Bulletin

Example

The following example shows the use of a few of the commands on a short artificial data set.

. list

m

У

1.

2

1992

2.

2

1994

3.

4

1994

4.

7

1994

ε.

12

1994

. Iastbday m y, generate (Ibday)
. list

m

У

Ibday

1.

2

1992

28

2.

2

1994

28

3.

4

1994

29

4.

7

1994

29

ε.

12

1994

30

mdytodow m Ibday у.

, gen(dow)

list

m

У

Ibday

do w

1.

2

1992

28

Fri.

2.

2

1994

28

Mon.

3.

4

1994

29

Fri.

4.

7

1994

29

Fri.

ε.

12

1994

30

Fri.

list,

nolabel

m

У

Ibday

do w

1.

2

1992

28

ε

2.

2

1994

28

1

3.

4

1994

29

ε

4.

7

1994

29

ε

ε.

12

1994

30

ε

. describe

Contains data

Obs :

ε

(max=

8088)

Vars :

4

(max=

99)

Width:

12

(max=

200)

1. m

float '∕09.Og

2. y

float

7.9.0g

3. Ibday

int

7.8.0g

4. do w

int

7.8.0g

Dayslab

Sorted by:

Note that the new variable dow is an integer, but has been given the label Dayslab.

Each of these date commands may also be used in immediate form. To use the command in immediate form, simply type
the name of the command along with the numbers or strings for the day, month, or year you want converted. The command
will display its results to the screen as well as saving them in the global macros S_l-S_4.

Example

. lastday 2 1992
29

Saturday, February 29, 1992

. disp_s

S_l:       29

S_2:       Saturday

S_3:        Sat

S_4:       Sat.

. today

July 1, 1994



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