WebR语言中的rev ()函数用于返回数据对象的反向版本。. 数据对象可以定义为向量、按列和按行的 DataFrame 等。. 用法: rev (x) 参数:. x: 数据对象. 返回: 传递的数据对象的反转. 范例1:. # R program to reverse a vector # Create a vector vec <- … WebComputes the sample crosscorrelation (covariance) function of x and y up to lag lag . If pl is TRUE , then the crosscorrelation (covariance) function is plotted. For the crosscorrelation function also the 95% confidence bounds for strict white noise are plotted. Uses fft for efficiency reasons. Missing values are not handled.
在 R 中使用 diff 函数_迹忆客
WebIf x is a vector of length n and differences = 1 , then the computed result is equal to the successive differences x [ (1+lag):n] - x [1: (n-lag)]. If difference is larger than one this … WebR语言 cumsum ()用法及代码示例. cumsum () R语言中的函数用于计算作为参数传递的向量的累积和。. 用法: cumsum (x) 参数:. x: 数字对象. 范例1:. # R program to illustrate # the use of cumsum() Function # Calling cumsum() Function cumsum(1:4) cumsum(-1:-6) daphne moffatt maryville tn attorney
R语言中极值点的求法 - R语言论坛 - 经管之家(原人大经济论坛)
WebFor a one-sample test, the predictors must consist of a single offset (sp) term, where sp is a vector giving the survival probability of each subject. For a k-sample test, each unique … WebMar 19, 2024 · R语言计算时间序列数据的差分值:使用diff函数计算时间序列数据的差分值、自定义设置lag参数指定差分间距的大小(例如计算某指标年同比变化量、设置lag参数 … WebMay 27, 2024 · R语言 -- 交并补:intersect、union、setdiff、Reduce多重操作. R语言 -- 交并补:intersect、union、setdiff、Reduce多重操作 birthing hospital bag essentials