rowSum2
语法
rowSum2(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
逐行进行元素求平方和操作,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]);
$ rowSum2(m);
[46.51,33.8,37.06]
$ t1=table(1..5 as x, 6..10 as y);
$ t2=table(5..1 as a, 10..6 as b);
$ rowSum2(t1);
[37,53,73,97,125]
$ rowSum2(t1[`x], t2, 1 1 2 2 2);
[127,102,86,73,66]
$ 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,rowSum2(price1,price2) as price2Sum from t;
sym |
priceSum |
---|---|
AAPL |
224.83 |
MS |
80.22 |
IBM |
79.84 |
IBM |
81.31 |
C |
201.2 |
相关函数:sum2