変数の頻度

Question

以下のprgは、変数のインスタンスを数えようとします。

%macro freq(dsn=,variable=,freq=,label); 

proc freq data = &dsn; 
tables &variable; 
run; 

%mend; 
%freq(dsn=fff,variable=ggg); 

Answer 1

フォーマットと印刷手順を追加することでこれを行うことができます。私はこれをテストし、あなたが達成しようとしていることが達成されたと信じています。

%macro freq(indsn=,variable=,freq=,label); 

/* Create a new format or label when a value falls between 
    0 and the user defined frequency. */ 
proc format; 
    value fmt 0-&freq. = "&label."; 
run; 

/* Run the frequency procedure and suppress the output 
    to a temporary data set. */ 
proc freq data = &indsn; 
tables &variable/noprint out=temp; 
run; 

/* Print the temporary data set and format the Count 
    variable (which was created in the freq procedure) 
    to the format, fmt, that we created. Finally, print only 
    records with a frequency less than the user defined 
    frequency. */ 
proc print data=temp noobs; 
    format count fmt.; 
    where count le &freq.; 
run; 

%mend; 

最近の編集では、これをデータステップとif文で実行できます。

%macro freq(indsn=,variable=,freq=,label); 

/* Run the frequency procedure and suppress the output 
    to a temporary data set. */ 
proc freq data = &indsn; 
tables &variable/noprint out=temp; 
run; 

/* Assign variable a new name if its frequency equals the 
    user defined frequency and only keep records with a count 
    less than or equal to the frequency. */ 
data temp; 
    set temp; 
if count le &freq.; 
if count = &freq. then &variable. = &label.; 
run; 

/* Print only the &variable variable. */ 
proc print data=temp noobs; 
var &variable.; 
run; 

%mend;