Re: sort by multiple variable Posted 09-18-2018 02:43 PM (1773 views) | In reply to jojozheng Try it this way: data want; set have; by id; retain dummy; if first.id then dummy=flag; else dummy + flag; if dummy=1 then do; flag1=1; dummy=2; end; drop dummy; run; View...
4. How can you sort by multiple variables in SAS? A. List variables separated by commas B. Use multiple SORT statements C. List variables separated by spaces D. Only sort by one variable Show Answer 5. What does the OUT= option do in the SORT procedure? A. Specifies the input...
ALLCOMB Function Generates all combinations of the values of n variables taken k at a time in a minimal change order. ALLPERM Function Generates all permutations of the values of several variables in a minimal change order. CALL ALLCOMB Routine Generates all combinations of the values of n varia...
SAS tip: Use the hyphen and colon operators to specify multiple data sets on the SET statement Here's a SAS tip for you. Most SAS programmers know that SAS provides syntax that makes it easy to specify a list of variables. For example, you can use the hyphen and colon operators to ...
Sixth Edition. The book contains a mixture of multiple-choice questions, open-ended discussion topics, and programming exercises with selected answers and hints. It also includes comprehensive programming projects that are designed to encourage self-study and to test the skills developed by The Little...
第一种:set data1 data2;然后再执行proc sort。 第二种:set data1 data2;by variable;这种效率比第一种高,虽然不知道why...但是书上这么说的。我觉得可能是数据读取次数的问题吧,第二种只需要读一次,第一种要读两次 set语句从一个或多个sas数据集中读取观测值并实现纵向合并,每一个set语句执行时,sas就会...
SAS tip: Use the hyphen and colon operators to specify multiple data sets on the SET statement Here's a SAS tip for you. Most SAS programmers know that SAS provides syntax that makes it easy to specify a list of variables. For example, you can use the hyphen and colon operators to ...
But you’ll still likely need some sort of data analyst who can help you refine your models and come up with the best performer. And then you might need someone in IT who can help deploy your models. That means putting the models to work on your chosen data – and that’s where you...
predicted based on known value of other variables. The response variable is categorical, meaning it can assume only a limited number of values. With binary logistic regression, a response variable has only two values such as 0 or 1. In multiple logistic regression, a response variable can have...
By default, the information from the value labels is retained even if the variables aren’t converted to factors. This information can be returned using rxGetVarInfo. If you don’t wish to retain the information from the value labels, you can specify labelsAsInfo=FALSE. Importing wide data ...