Reads the format of the number-of-week value within the year and
returns a SAS date value using the W algorithm.
-
w
-
specifies the width of the input field.
The WEEKWw.
informat reads a format of the number-of-week value. If the input does not
contain a year expression, the WEEKWw. informat
uses the current year as the year expression, which is the default. If the
input does not contain a day expression, the WEEKWw.
informat uses the first day of the week as the day expression, which is the
default. Algorithm W calculates the SAS date value using the number of the
week within the year (Monday is considered the first day of the week). The
number-of-week value is represented as a decimal number in the range 0-53,
with a leading zero and maximum value of 53. For example, the fifth week of
the year would be represented as 05.
The inputs to the WEEKWw. informat are
the same date for the following example. The current year is 2003.
|
Widths |
Formats |
Examples |
|
3-4 |
Www |
w01 |
|
5-6 |
yyWww |
03W01 |
|
7-8 |
yyWwwdd |
03W0101 |
|
9-10 |
yyyyWwwdd |
2003W0101 |
|
11-200 |
yyyy-Www-dd |
2003-W01-01 |
The WEEKUw.
informat reads the number-of-week value within the year. Sunday is the first
day of the week, as a decimal number in the range 0-53, with a leading
zero. The WEEKVw. informat reads the number-of-week
value as a decimal number in the range 01-53. Weeks begin on a Monday
and week 1 of the year is the week that includes both January 4th and the
first Thursday of the year. If the first Monday of January is the 2nd, 3rd,
or 4th, the preceding days are part of the last week of the preceding year.
The WEEKWw. informat reads the week-number-of-year
value as a decimal number in the range 00-53, with Monday as the first
day of week 1.
The current year is 2003 in the following examples.
|
Statements |
Results |
|
----+----1----+
|
v=input('W01',weekw3.);
w=input('03W01',weekw5.);
x=input('03W0101',weekw7.);
y=input('2003W0101',weekw9.);
z=input('2003-W01-01',weekw11.);
put v;
put w;
put x;
put y;
put z;
|
15711
15711
15711
15711
15711
|
|
Formats:
|
|
Function:
|
|
Informats:
|
Copyright © 2011 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
