SAS Coding

[hqquenafees]

Hi, 

please help me understand the following 

the symbol -< , <- and <-< are confusing 

%let big=0.7;
proc format;
    picture correlations &big -< 1 = '009.99' (prefix="*")
                         -1 <- -&big = '009.99' (prefix="*")
                         -&big <-< &big = '009.99';
run;

[ed_sas_member · Accepted solution]

Hi @hqquenafees 

By default, a simple hyphen (-) means that boundaries are included.

To exclude them, you can use the inferior sign: <

• &big -< 1 = '009.99' (prefix="*") is equivalent to [&big;1[
• -1 <- -&big = '009.99' (prefix="*") is equivalent to ]-1;-&big]
• -&big <-< &big = '009.99' is equivalent to ]-&big;&big[