What does Bysort mean in Stata?
What does Bysort mean in Stata?
by and bysort are really the same command; bysort is just by with the sort option. The varlist1 (varlist2) syntax is of special use to programmers. It verifies that the data are sorted. by varlist1 varlist2 and then performs a by as if only varlist1 were specified.
Can you sort data in Stata?
The sorting technique used by Stata is fast, but the order of variables not included in varlist is not maintained. If you wish to maintain the order of additional variables, include them at the end of varlist. There is no limit to the number of variables by which you may sort.
What is Gsort Stata?
Description. gsort arranges observations to be in ascending or descending order of the specified variables and so differs from sort in that sort produces ascending-order arrangements only; see [D] sort. Each varname can be numeric or a string.
Can you Bysort two variables in Stata?
Sort order You can use the sort command in Stata to acheive this. Of course you can order your observation based on ordering one variable, but you can go further and sort your data on multiple variables.
How do you do Bysort in R?
To sort a data frame in R, use the order( ) function. By default, sorting is ASCENDING. Prepend the sorting variable by a minus sign to indicate DESCENDING order.
How do I sort in Scilab?
Description
- B=gsort(A,’g’) , B=gsort(A,’g’,’d’) and B=gsort(A) sort the elements of the array A , seen as A(:) in a decreasing order.
- B=gsort(A,’lr’) sorts the rows of A in lexical decreasing order.
- B=gsort(A,’lc’) sorts the columns of A in lexical decreasing order.
Can you sort by two variables in Stata?
You may insert more than one variable name; data will then be sorted first according to the first variable, and wherever there are several cases with the same value in this variable, these will be sorted according to the second variable, and so on in the case of even more variables.
What is preserve in Stata?
When preserve is issued, the user’s data are preserved. The data in memory remain unchanged. When the program or do-file concludes, the user’s data are automatically restored. After a preserve, the programmer can also instruct Stata to restore the data now with the restore command.
