topic Re: cannot identify the specific strings in the variable in SAS Programming

cannot identify the specific strings in the variable

Alexxxxxxx — Sat, 05 Sep 2020 22:15:00 GMT

Hi,

I am trying to create a new variable (i.e., SP_20scale) based on the old variable (i.e., rating) by following codes,

data SP_table2;                       
	Length                              
	SP_20scale 8.                                             
	;                                   
	set SP_table1;                      
	if rating='AAA'  then SP_20scale=20;
	if rating='AA+'  then SP_20scale=19;
	if rating='AA'   then SP_20scale=18;
	if rating='AA-'  then SP_20scale=17;
	if rating='A+'   then SP_20scale=16;
	if rating='A'    then SP_20scale=15;
	if rating='A-'   then SP_20scale=14;
	if rating='BBB+' then SP_20scale=13;
	if rating='BBB'  then SP_20scale=12;
	if rating='BBB-' then SP_20scale=11;
	if rating='BB+'  then SP_20scale=10;
	if rating='BB'   then SP_20scale=9 ;
	if rating='BB-'  then SP_20scale=8 ;
	if rating='B+'   then SP_20scale=7 ;
	if rating='B'    then SP_20scale=6 ;
	if rating='B-'   then SP_20scale=5 ;
	if rating='CCC+' then SP_20scale=4 ;
	if rating='CCC'  then SP_20scale=3 ;
	if rating='CCC-' then SP_20scale=2 ;
	if rating='C'    then SP_20scale=1 ;
	if rating='SD'   then SP_20scale=1 ;
	if rating='CC'   then SP_20scale=1 ;
	if rating='D'    then SP_20scale=1 ;
run;

However, the code cannot identify the value in the 'rating' variable, I put a sample of the dataset in the attachment, the 'rating' variable is created by following codes,

rating=strip(tranwrd(scan(SP_ECR_History1,i,':'),'Rating Range',''));

it should not cause by leading and trailing blanks.

Could you please give me some suggestions about this.

Thanks in advance.

Re: cannot identify the specific strings in the variable

Tom — Sat, 05 Sep 2020 22:31:12 GMT

Your strings have carriage return and linefeed characters in them.

proc freq ;
tables rating ;
format rating $hex10.;
run;

The FREQ Procedure

                                       Cumulative    Cumulative
rating        Frequency     Percent     Frequency      Percent
---------------------------------------------------------------
420D0A2020           7       14.00             7        14.00
422B0D0A20           9       18.00            16        32.00
422D0D0A20          15       30.00            31        62.00
42420D0A20           3        6.00            34        68.00
42422D0D0A           6       12.00            40        80.00
4242420D0A           1        2.00            41        82.00
4242422B0D           1        2.00            42        84.00
4343430D0A           1        2.00            43        86.00
4343432B0D           3        6.00            46        92.00
4E520D0A20           4        8.00            50       100.00

How did you make them? You can use COMPRESS() function to remove them:

rating=compress(rating,'0D0A'x);

Re: cannot identify the specific strings in the variable

RichardDeVen — Sun, 06 Sep 2020 00:02:04 GMT

Use a custom informat to map a string value to a corresponding numeric value. The INPUT function is used to apply the custom informat. Per @Tom the original rating value needs to be cleaned up by removing 'unprintable' characters. The COMPRESS function defines a printable character as one with an ASCII code >= 32.

Example:

proc format;
  invalue ratescale
    'AAA' = 20
    'AA+' = 19
    'AA'  = 18
    'AA-' = 17
    'A+'  = 16
    'A'   = 15
    'A-'  = 14
    'BBB+'= 13
    'BBB' = 12 
    'BBB-'= 11 
    'BB+' = 10 
    'BB'  =  9 
    'BB-' =  8 
    'B+'  =  7 
    'B'   =  6 
    'B-'  =  5 
    'CCC+'=  4 
    'CCC' =  3 
    'CCC-'=  2 
    'C'   =  1 
    'SD'  =  1 
    'CC'  =  1 
    'D'   =  1 
    other =  .  /* NR or unknown ratings */
  ;
run;

data want;
  set download.sp_table2;

  rating = compress(rating,,'KW'); * keep only printable characters;

  scale = input (rating,ratescale.);
  format scale 4.;
run;

Re: cannot identify the specific strings in the variable

Ksharp — Sun, 06 Sep 2020 11:20:51 GMT

Using
if rating =: 'AAA'

Not
if rating='AAA'