topic Re: Can we use changing dates in proc format? in SAS Programming

Can we use changing dates in proc format?

wg — Fri, 30 Jan 2015 21:36:55 GMT

I just want to create a format like below, but always failed . Please let me know if it is feasible

Proc Format;

value week today()-weekday(today())-7) -< today()-weekday(today())=week1

today()-weekday(today())-14 -< (today()-weekday(today())-7=week2;

run;

Re: Can we use changing dates in proc format?

Orsini — Fri, 30 Jan 2015 22:01:12 GMT

Here is something I did a while back that seems similiar to what you are trying to do (see attached).

Re: Can we use changing dates in proc format?

wg — Sat, 31 Jan 2015 00:33:38 GMT

thank you very much

Re: Can we use changing dates in proc format?

PGStats — Sat, 31 Jan 2015 02:49:52 GMT

If you don't want to have to (re)define the format on the same day that it is used, then you could use a function based format:

proc fcmp outlib=sasuser.fcmp.test;

function weekNo(d) $8;

t = today();

if t >= d

then return(cats("Week",1+intck("WEEK",d,t,"CONTINUOUS")));

else return("******");

endsub;

run;

options cmplib=sasuser.fcmp;

proc format;

value weekNo (min=5 max=8 default=5) other = [weekNo()];

run;

data _null_;

format d yymmdd10.;

do d = '15JAN2015'd to '05FEB2015'd;

str = put(d, weekNo5.);

put (d str) (=);

end;

run;

d=2015-01-15 str=Week3

d=2015-01-16 str=Week3

d=2015-01-17 str=Week2

d=2015-01-18 str=Week2

d=2015-01-19 str=Week2

d=2015-01-20 str=Week2

d=2015-01-21 str=Week2

d=2015-01-22 str=Week2

d=2015-01-23 str=Week2

d=2015-01-24 str=Week1

d=2015-01-25 str=Week1

d=2015-01-26 str=Week1

d=2015-01-27 str=Week1

d=2015-01-28 str=Week1

d=2015-01-29 str=Week1

d=2015-01-30 str=Week1

d=2015-01-31 str=******

d=2015-02-01 str=******

d=2015-02-02 str=******

d=2015-02-03 str=******

d=2015-02-04 str=******

d=2015-02-05 str=******

d=2015-02-06 str=******

d=2015-02-07 str=******

d=2015-02-08 str=******

d=2015-02-09 str=******

d=2015-02-10 str=******

Re: Can we use changing dates in proc format?

wg — Mon, 02 Feb 2015 20:51:46 GMT

thank you

Re: Can we use changing dates in proc format?

Howles — Wed, 04 Feb 2015 22:20:06 GMT

The original difficulty arises because the VALUE statement requires literals (not expressions).

But the specs change only from one launch of the program to the next (not on the fly within the program). So %sysfunc and %eval offer a workaround. Try something like this:

Proc Format;

%let td = %sysfunc( today() ) ;

%let wd = %sysfunc( weekday(&td.)) ;

value week %eval(&td.-&wd.- 7) -< %eval(&td.-&wd. ) = week1

%eval(&td.-&wd.-14) -< %eval(&td.-&wd.- 7) = week2 ;

%symdel td wd ;

run;

Re: Can we use changing dates in proc format?

wg — Thu, 05 Feb 2015 15:18:41 GMT

Thanks a million!