What is LOGICAL VARIABLES in SAS.And how it can be used..Can
anyone support..???
Answers were Sorted based on User's Feedback
Answer / sangeeta
Fitst. and Last. varibles used in data step are called
Logical Variables.
| Is This Answer Correct ? | 26 Yes | 3 No |
Answer / nagaraju
Fitst. and Last. varibles are logical variables and returns
1 & 0 values.
These are mailnly used to give the first and last
occurances from the table.
ex: employee table having (1-100 employees) -- uses
if we give first.empid=1 then it gives only first employee
details
if we give first.empid=0 then it gives remaining employee
details except first one
in the same way
if we give last.empid=1 then it gives last employee details
if we give last.empid=0 then it gives remaining employee
details except last one
hope this is clear
| Is This Answer Correct ? | 22 Yes | 3 No |
Answer / xxx
Yes I agree with the above answers,
first.obs and last.obs are also specifies the occurrence of the data. If we mention like
first.obs=1 and last.obs=1;
it will eliminate the duplicates also.
| Is This Answer Correct ? | 7 Yes | 0 No |
How to create list output for cross-tabulations in proc freq?
Did you used proc lifetest? when?
2 Answers Accenture, Parexel, Quintiles,
How would you determine how far down on a page you have printed in order to print out footnotes?
what is the primary variable in your study?
There is a river notoriously known for it?s large crocodile population. With ease, how do you safely cross it?
What is the role of administrative users? : sas-grid-administration
How to get second top scorer student from a class- table having different sections A, B, C & D? each section has same number of student.
Do we follow ADAM in analysis dataset development?How? Usually which version? Why is it necessary?
explain what is factor analysis? : Sas-administrator
I have a dataset with variables empid and doj how to calculate retirement age?
I Here clinical SAS training by Ramesh Azmeera is good. Is it confirm ?
Describe a time when you were really stuck on a problem and how you solved it?