topic Re: problem with the program in SAS Programming

problem with the program

makset7 — Wed, 14 Feb 2018 12:37:01 GMT

Hello

I have the following sample data set:

data exe;
input n $ x $ y;
datalines;
1   7   .
2   4   .
3   5   .
4   6   .
5   3   .
6   2   .
7   1    .
1   4   .
2   1   .
3   3   .
4   5   .
5   7   .
6   2   .
7   6    .
1   3   .
2   7   .
/****/
;
run;

I would like to determine the order of the maximum (or minimum) values that are to be achieved

the maximum value in the data set is 7 and is in the first place (n = 1), the next maximum value in the set is 6 (n = 4) (skipping the first max values), the next maximum value in the set is 5 (n = 3) (omitting the previous maximum values) and so on.

I would like to get the result as in the annex

thank you in advance for your answer

Best regard

Re: problem with the program

RW9 — Wed, 14 Feb 2018 13:52:00 GMT

Please use the post area to show required output, not attachments. from your data, you can simply sort, apply your logic, then sort back again:

proc sort data=exe;
  by x n;
run;
data exe;
  set exe;
  by n;
  if first.n then y=123;
run;
proc sort data=exe;
  by n x;
run;

Re: problem with the program

makset7 — Wed, 14 Feb 2018 15:37:52 GMT

data exe;
  set exe;
  by n;
  if first.n then y=123;
run;

ERROR: variables BY are not sorted correctly in the WORK.EXE file

Re: problem with the program

makset7 — Wed, 14 Feb 2018 16:14:40 GMT

my solution

data exe;
input n $ x;
datalines;
1    7
2    4
3    5
4    6
5    3
6    2
7    1
1    4
2    1
3    3
4    5
5    7
6    2
7    6
1    3
2    7
;
run;

data exe;
 set exe;
if mod(_n_ , 7) = 0 then n1 = int(_n_ / 7);
if mod(_n_ , 7) ne 0 then n1 = int(_n_ / 7) + 1;
run;

proc sort data = exe;
key n1 / ascending;
key x / descending;
run;


data exe;
 set exe;
z = (lag6(n) * 1000000) + (lag5(n) * 100000) + (lag4(n) * 10000) + (lag3(n) * 1000) + (lag2(n) * 100) + (lag1(n) * 10) + n;
if mod(_n_ , 7) ne 0 then  z = .;
run;

maybe you have easier solutions ??? if so, write

RW9 thank you for your help.

Re: problem with the program

Reeza — Wed, 14 Feb 2018 16:24:02 GMT

@makset7 wrote:
data exe;
  set exe;
  by n;
  if first.n then y=123;
run;
ERROR: variables BY are not sorted correctly in the WORK.EXE file

Did you sort your data set first using PROC SORT? In general you shouldn't use the same data set name in DATA and SET, it's a good way to destroy your data, which you may have done already so make sure to recreate it from the import step first or whatever step creates the exe data.

Re: problem with the program

RW9 — Wed, 14 Feb 2018 16:34:27 GMT

Please re-read the code I provided you with, you will come across a "proc sort" which is used to sort the data.

Re: problem with the program

RW9 — Thu, 15 Feb 2018 14:19:02 GMT

Why make it more complicated, my code should do it far simpler.