SAS中的proc集群

Question

我有以下代码对数据进行分类：

proc cluster data = Sasuser.Live;
method=ave outtree= Sasuser.LiveClassify;
var GDP Income Consumption Employment Education Health Life
id Region;
run;

具有数据Sasuse.Live，如下所示：

然后我得到以下错误：

1    proc cluster data = Sasuser.Live;
2    method=ave outtree= Sasuser.LiveClassify;
     ------
     180
ERROR 180-322: Statement is not valid or it is used out of proper order.
3    var GDP Income Consumption Employment Education Health Life
4    id Region;
ERROR: Variable ID not found.
ERROR: Variable Region in list does not match type prescribed for this list.
5    run;

NOTE: The SAS System stopped processing this step because of errors.
WARNING: The data set WORK.DATA1 may be incomplete.  When this step was stopped there were 0
         observations and 0 variables.
NOTE: PROCEDURE CLUSTER used (Total process time):
      real time           0.04 seconds
      cpu time            0.01 seconds