topic Proc for changing case in SAS Procedures

Proc for changing case

Fol_ — Mon, 20 Feb 2012 12:23:52 GMT

Hi,

I have a column - city within a dataset that displays the city a client lives. But some cities are recorded in upper case , some in lower case and some in mixed case so when i try to run the frequency on cities, the same city is counted twice if recorded in different cases for example, london may be recorded as :

LONDON

london

Londnon

lonDON

so what statement can i use to change all the example to just one city in Uppercase i.e LONDON within the data set?

Thanks

Proc for changing case

Haikuo — Mon, 20 Feb 2012 12:36:33 GMT

Exactly, just use upcase() to convert your variable to upper case. Such as:

data have;

input city $;

cards;

LONDON

london

Londnon

lonDON

;

data want;

set have;

city=upcase(city);

run;

proc print;run;

Regards,

Haikuo

Proc for changing case

Fol_ — Mon, 20 Feb 2012 12:46:24 GMT

Thanks Haikuo,

But london is not the only city that was just an example . I have hundreds of cities in the data set, it actually contains about 100 000 records, so i may not be able to use the CARDS statement.

Proc for changing case

LinusH — Mon, 20 Feb 2012 13:17:01 GMT

The cards statement just represents some sample data just to describe this example.

Just replace have in the second step to whatever table you already got data in, and skip step 1.

Proc for changing case

Tom — Mon, 20 Feb 2012 14:00:02 GMT

If you just want to use PROC FREQ on the variable then use the $UPCASE function.

proc freq data=have;

tables city;

format city $upcase.;

run;

If you want to fix the data then use the upcase() function in a data step as Haikuo as pointed out.

Proc for changing case

Fol_ — Mon, 20 Feb 2012 15:19:10 GMT

Thanks!

Proc for changing case

Fol_ — Mon, 20 Feb 2012 15:19:29 GMT

Thanks!

Proc for changing case

Ksharp — Tue, 21 Feb 2012 08:39:02 GMT

Here is a simple way which can change all alpha character into UPPERCASE.

filename tran 'c:\temp.dat';
proc cport data=sashelp.class file=tran outtype=upcase;
run;
proc cimport infile=tran data=want;
run;

Ksharp