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03-04-2015 01:52 PM

Hi,

I am trying to create a macro variable **M** that takes 1 if macro variable **X** takes values among a set of values defined by another macro variable **Y**.

For example, %LET X=a; %LET Y=a b c d e f g;

Since a is one of values of Y, so macro variable M takes 1; otherwise, it takes 0.

Can you please show me some quick way to write it? In STATA, it is something like

Local M: list X in Y

Thanks in advance.

Sunny

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Solution

03-04-2015
02:26 PM

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Posted in reply to Sunny_Sun

03-04-2015 02:26 PM

This should be easy enough:

%if %index(%str( &y ), %str( &x )) %then %let m=1;

%else %let m=0;

It's important to keep the blanks inside the parentheses, before and after &x and &y.

Good luck.

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Solution

03-04-2015
02:26 PM

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Posted in reply to Sunny_Sun

03-04-2015 02:26 PM

This should be easy enough:

%if %index(%str( &y ), %str( &x )) %then %let m=1;

%else %let m=0;

It's important to keep the blanks inside the parentheses, before and after &x and &y.

Good luck.

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Posted in reply to Astounding

03-04-2015 02:51 PM

many thanks it works.

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Posted in reply to Sunny_Sun

03-04-2015 02:36 PM

You give the following a try:

%LET X=d;

%LET Y=a b c d e f g;

%let M = %sysfunc(sign(%index(&y,&x)));

%put the value of M is >>> &M;

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Posted in reply to billfish

03-04-2015 02:52 PM

many thanks for your help