rowMax

语法

rowMax(args...)

row 系列函数通用参数说明和计算规则请参考: 行计算系列(row 系列)

详情

逐行进行取最大值的操作,返回一个长度与输入参数行数相同的向量。

例子

$ m=matrix([4.5 2.6 1.5, 1.5 4.8 5.9, 4.9 2.0 NULL])
$ rowMax(m);
[4.9,4.8,5.9]

$ t1=table(1..5 as x, 6..10 as y)
$ t2=table(5..1 as a, 10..6 as b);

$ rowMax(t1);
 [6,7,8,9,10]

$ rowMax(t1[`y], t2, take(8, 5));
[10,9,8,9,10]

$ t=table(`AAPL`MS`IBM`IBM`C as sym, 49.6 29.46 29.52 30.02 174.97 as price1, 175.23 50.76 50.32 51.29 26.23 as price2);
$ select sym,rowMax(price1,price2) as max from t;

sym

max

AAPL

175.23

MS

50.76

IBM

50.32

IBM

51.29

C

174.97

相关函数:max