Subsetting is no exception, with both the brackets [] and subset() function accomplishing the same thing. You can choose between the two, depending on whether you prefer low-level control or high-level simplicity. Consider advancing your skills with our Machine Learning Scientist in R career ...
范例1: # R program to create#subsetof a data frame# Creating a Data Framedf<-data.frame(row1 =0:2, row2 =3:5, row3 =6:8)print("Original Data Frame")print(df)# Creating a Subsetdf1<-subset(df,select= row2)print("Modified Data Frame")print(df1) 输出: [1] "Original Data Fr...
shrinkage <- function(fit, k=10, seed = 1){ require(bootstrap) theta.fit <- function(x, y){lsfit(x, y)} theta.predict <- function(fit, x){cbind(1, x) %*% fit$coef} x <- fit$model[, 2:ncol(fit$model)] y <- fit$model[,1] set.seed(seed) results <- crossval(x, y...
# seurat-object-4.0.4/R/seurat.R:2497:subset.Seurat <- function( # seurat-object-4.0.4/R/assay.R:858:subset.Assay <- function(x, cells = NULL, features = NULL, ...) { # 这是一个S3类,有针对 Assay 和 Seurat 类的函数实现。 (1) subset.Seurat() #' @describeIn Seurat-methods ...
W. Penm, and R. D. Terrell (2002) `Selecting the forgetting factor in subset autoregressive modelling.' Journal of Time Series Analysis 23, 629-649Brailsford, T. J., Jack H. W. Penm, and R. D. Terrell (2002) `Selecting the forgetting factor in subset autoregressive modelling.' ...
在R中,我们可以使用简单的c()函数来创建一个向量,c 的本意即为concatenate(连接)。下面的代码中小编创建了一个包含五个元素的向量,并将其赋值给变量x,而x的本质是一个指针,通过这个指针可以对向量元素进行增删或者更改的操作来进行重赋值。 x <- c(18,34,49,52,81) ...
3 InSet是一个表示正整数集合的类,成员函数InSubSet是判断集合B是否为集合A的子集,IsMemberOf来判断一个正整数是否在此集合中,请编写成员函数InSubSet,输出: 集合A:1 2 3 5 8 10 集合B:2 8 集合B是集合A的子集 相关知识点: 试题来源: 解析 if (end < set.GetEnd()) return false; for (int i...
解析 答案见上3【解析】$$ x \in R | x ^ { 2 } + 1 = 0 = \varnothing , x \in R $$ $$ x ^ { 2 } - 1 = 0 = - 1 , 1 $$,故集合A是集合 {-1,1}的非空子集,所以集合A的个数为 $$ 2 ^ { 2 } - 1 = 3 . $$ . ...
Bechhofer, R. E.Cornell Univ.Dunnett, C. W.Subset selection for normal means in multi-factor experiments - Bechhofer, Dunnett - 1987
Most examples are relatively hypocellular and more densely collagenous than nodular fasciitis; however, a cellular variant has been described, which has considerable morphologic overlap with nodular fasciitis and has been shown to harbortranslocations in a subset of cases. The incidence of these ...