Expand.grid r用法
WebSep 9, 2024 · Rのexpand.grid関数を使って、引数のベクトルの全組み合わせを作ることができます。. 例えば、こんな風に作れます。. この時、1 1、2 2というように値がかぶっている組み合わせ、1 2、2 1という重複している組み合わせを除きたいときがあります。. そう … http://www.idata8.com/rpackage/base/expand.grid.html
Expand.grid r用法
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Webexpand() generates all combination of variables found in a dataset. It is paired with nesting() and crossing() helpers.crossing() is a wrapper around expand_grid() that de-duplicates … WebJun 30, 2024 · base包—expand.grid函数 描述从所有因子变量的组合中创建一个数据框根据所提供的向量或因子的所有组合创建数据帧。请参阅返回值的描述以了解具体的操作方法。用法expand.grid(..., KEEP.OUT.ATTRS = TRUE, stringsAsFactors = TRUE)参数...：向量，因子或包含这些的列表。
WebJun 17, 2013 · > expand.grid(c("aa", "ab", "cc"), c("aa", "ab", "cc")) Var1 Var2 1 aa aa 2 ab aa 3 cc aa 4 aa ab 5 ab ab 6 cc ab 7 aa cc 8 ab cc 9 cc cc Do you know an efficient way … Web提示：下滑文章左侧可以查看目录！ 1 走进tkinter世界 1.1 认识tkinter. tkinter是一个GUI开发模块，是Tcl/Tk语言在Python上的接口 ...
WebJan 14, 2015 · I would like to expand a grid in R such that the expansion occurs for unique values of one variable but joint values for two variables. For example: frame <- data.frame(id = seq(1:2),id2 = seq(1:2), year = c(2005, 2008)) WebMany options available to get the desired result. But perhaps OP seems to be keen on using tidyr::expand. A solution can be as: library (dplyr) library (tidyr) df %>% group_by (Var1, Var2) %>% expand (ID = 1:2) %>% arrange (ID) # # A tibble: 8 x 3 # # Groups: Var1, Var2 [4] # Var1 Var2 ID # # 1 a a 1 # 2 a b 1 # 3 b a 1 # 4 b ...
WebFeb 9, 2012 · product from itertools is the key to your solution. It produces a cartesian product of the inputs. from itertools import product def expand_grid(dictionary): return pd.DataFrame([row for row in product(*dictionary.values())], columns=dictionary.keys()) dictionary = {'color': ['red', 'green', 'blue'], 'vehicle': ['car', 'van', 'truck'], 'cylinders': [6, 8]} …
WebMar 23, 2024 · 在本章中，为了帮助小瓦评估她的“低买高卖”策略，我们简单设计 了一个回测程序，通过小瓦总资产的变化来评价策略的业绩表现；随后 又介绍了两个经典的交易策略——双移动平均策略和海龟策略。. 当然， 这两种策略都是基于市场动量的变化而设计的 ... is an archaeopteryx a birdWebDec 9, 2024 · From the function’s documentation, it “Create a Data Frame from All Combinations of Factor Variables”. There is also a more recent adaptation of it into a … is an arbitration a trialWebexpand() generates all combination of variables found in a dataset. It is paired with nesting() and crossing() helpers.crossing() is a wrapper around expand_grid() that de-duplicates and sorts its inputs; nesting() is a helper that only finds combinations already present in the data. expand() is often useful in conjunction with joins: use it with right_join() to convert implicit … is an ar 15 automatic weaponWebexpand_grid() is heavily motivated by expand.grid() . Compared to expand.grid() , it: Produces sorted output (by varying the first column the slowest, rather than the fastest). Returns a tibble, not a data frame. Never converts strings to factors. Does not add any additional attributes. Can expand any generalised vector, including data frames. ... is an ar a pistolWebMay 17, 2024 · pytorch中的expand（）和expand_as（）函数 1.expand（）函数： （1）函数功能： expand（）函数的功能是用来扩展张量中某维数据的尺寸，它返回输入张量在某维扩展为更大尺寸后的张量。扩展张量不会分配新的内存，只是在存在的张量上创建一个新的视图（关于张量的视图可以参考博文：由浅入深地分析 ... is a narcassist unfaithful in a relationshipWebCreate a data frame from all combinations of the supplied vectors or factors. See the description of the return value for precise details of the way this is done. is an archbishop the same as a cardinalWebJun 18, 2013 · I recently came across this question R - Expand Grid Without Duplicates and as I was searching for duplicates, I found this question. The question there isn't exactly a duplicate, as it is a bit more general and has additional restrictions which @Ferdinand.kraft shined some light on. oltay edith