标题: SAS矩阵里面的负数符号，怎么不识别呢 [打印本页] 作者: shiyiming 时间: 2012-5-10 08:48 标题: SAS矩阵里面的负数符号，怎么不识别呢 proc iml；
use dif_dif;read all var {col24} into matrix_temp where (col23>15);
use dif_dif;read all var {col24} into matrix_temp2 where (col23< -15);
quit;
col23>15 没有问题，但是col<-15 就无法识别负号
报一下错误：
48 ! read all var {col24} into matrix_temp2 where (col23< -15);
-
22
76
ERROR 22-322: 语法错误，期望下列之一: (, {.作者: shiyiming 时间: 2012-5-14 15:41 标题: Re: SAS矩阵里面的负数符号，怎么不识别呢 [code:pdhqx36y]proc iml;
use dif_dif;read all var {col24} into matrix_temp where (col23>15);
use dif_dif;read all var {col24} into matrix_temp2 where (col23<(-15));*请加括弧;
quit;
[/code:pdhqx36y]