针对你遇到的错误信息 "error in unique.default(x, nmax = nmax) : unique() applies only to vectors",我们可以按照以下步骤进行排查和解决:确认unique.default()函数的错误来源:unique.default()函数是R语言中用于查找向量中唯一元素的函数。当你看到这个错误时,通常意味着你尝试对一个非向量类型的数据结构(如...
ave(data$x, data$group, mean) # Code leads to error # Error in unique.default(x, nmax = nmax) : # unique() applies only to vectorsUnfortunately, the error message “Error in unique.default(x, nmax = nmax) : unique() applies only to vectors” was returned....
How To Fix R Errors: error in unique.default(x, nmax = nmax) : unique() applies only to vectors While error messages are a part of the programming process, they can be even more annoying when they come across as complete gibberish. This problem is even worse when ...
Hi, I am finding error "Error in unique.default(x, nmax = nmax) : unique() applies only to vectors" when trying to train the model. Below is the complete code and its giving me issue when running the code "xgmodel <- train(learner = lrn_tune, task = traintask)" ...
do.call("rbind.data.frame", lapply(base::split(x=iris,~Species),head))#> Error in unique.default(x, nmax = nmax): unique() applies only to vectorssessionInfo()#> R version 4.2.0 (2022-04-22)#> Platform: x86_64-apple-darwin17.0 (64-bit)#> Running under: macOS Big Sur/Monterey...
#> ─ Session info ──────────────────────────────────...
In some languages, such asJandDyalog APL 17.0and later, Unique applies to themajor cellsof an array, including those with rank greater than 1: ⎕←x ← (⍳10)∘.∨2 3 6 1 1 1 2 1 2 1 3 3 2 1 2 1 1 1 2 3 6 1 1 1 2 1 2 1 3 3 2 1 2 ∪x 1 1 1 2 1 ...
such that the following lower bound holds for all tangent vectors \({\mathfrak {x}} \in t \mathcal {i}\) such that \({\mathfrak {g}} ({\mathfrak {x}}, {\mathfrak {x}}) = 0\) : $$\begin{aligned} - \bar{{\mathfrak {g}}} ( {\mathfrak {x}}, {\mathfrak {x}}...
For example, you can specify a function to compute wind or current direction when the underlying data is stored as U or V vectors. View example below. <String> rotationType Optional Defines the origin and direction of rotation depending on how the angle of rotation was measured. Can be ...
Locations in memory are specified by extensible bit vectors (EBV),which allow memory banks to be of arbitrary size; the banks are not limited to the 8 words depicted in Figure 8.31. In the EBV scheme, the first byte of an address is divided into an extension bit and seven data bits. ...