由买买提看人间百态

boards

本页内容为未名空间相应帖子的节选和存档,一周内的贴子最多显示50字,超过一周显示500字 访问原贴
Statistics版 - how do i keep the multiple records? plz help
相关主题
[合集] Need help on data manipulation, thanks a lot!更新一下Taste of R,再问两个R的问题。
SAS问题来了SAS question: count non-missing value for different variables
请教一个sas编程问题how to output cumulative percent to a dataset from Proc Freq?
sas proc report的问题[合集] how to calculate column sum not row sum in SAS? thanks a lo
SAS问题SAS question using PROC SQL 高手请进, 包子答谢
请问R Code和 Matlab Code 思路是否近似?请教sas高人(数据读入)
[急求助] survival analysis (SAS)SAS 请教
请教一个SAS小问题:如何得到 one cumulative varialbe of character variable?[合集] How to specify a variable as missing
相关话题的讨论汇总
话题: records话题: keep话题: do话题: var1话题: plz
进入Statistics版参与讨论
1 (共1页)
z**********i
发帖数: 88
1
var1 var2
a 1
a 1
a 2
a 5
b 3
c 2
.
.
.
how do i only keep only records of a? if i use first.a ^= last.a, then the
middle records of a will be deleted.
THanks.
g*******y
发帖数: 380
2
data new;
set old;
where var1='a';
run;
z**k
发帖数: 378
3
first.a
... that's pure nonsense ...
1 (共1页)
进入Statistics版参与讨论
相关主题
[合集] How to specify a variable as missingSAS问题
关于stepwise programming请问R Code和 Matlab Code 思路是否近似?
请问sas中一个变量的内容被两个左斜杠(/)分成了三部分[急求助] survival analysis (SAS)
怎样用R定位变量的位置请教一个SAS小问题:如何得到 one cumulative varialbe of character variable?
[合集] Need help on data manipulation, thanks a lot!更新一下Taste of R,再问两个R的问题。
SAS问题来了SAS question: count non-missing value for different variables
请教一个sas编程问题how to output cumulative percent to a dataset from Proc Freq?
sas proc report的问题[合集] how to calculate column sum not row sum in SAS? thanks a lo
相关话题的讨论汇总
话题: records话题: keep话题: do话题: var1话题: plz