Create a blank observation

[Ram999]

How to insert a blank observation alternatively or every two observations or specified?

[Shmuel]

The tool to enter a blank observation depends on your source and target -

is it a dataset or a report ? do you have ID (key) variables?

and - why do you want to insert the blank observation? what is the goal ?

[Ram999]

insert a blank observations alternatively or every 2 observations for existed dataset

[Shmuel · Accepted solution]

Try next code;

data want;
  set have;
      output;
       if mod(_N_,2) = 0 then do;
           call missing(_ALL_);
           output;
       end;
run;

change the MOD() 2nd argument  to insert blank observation as desired.

[Ram999]

Thank U very mucH...

[RW9]

Please mark @Shmuel's answer as correct.

[Reeza]

Depends. 

Using a do loop op with an explicit output statement and CALL MISSING() is easier option for a dataset. If it's a report there are other options. I suggest you expand upon what you're looking to accomplish. 

[ballardw]

Any takers that we will next see a request from OP on how to insert values from another data source into those blank rows?