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 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 … 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 …
The Essence of R’s expand.grid() Function by Dror Berel
Webexpand.grid()R语言中的函数用于创建一个 DataFrame ,其中包含所有值,这些值可以通过作为参数传递给函数的所有向量或因子的组合形成。 用法: expand.grid(…) WebNov 25, 2024 · 輕鬆學習r語言:成為r資料分析師 輕鬆學習 R 語言:成為 R 資料分析師 我希望可以寫作一本閱讀起來不那麼生澀的程式語言書籍,讓原本沒有程式基礎但是工作上有分析需求的使用者,像是產品經理(Product Managers)、商業分析師(Business… make 2 patterns of potteries of haryana
23 数据整理 R语言教程 - pku.edu.cn
WebMay 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 ... 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 ... Web本文搜集整理了关于python中dnutils ifnone方法/函数的使用示例。Namespace/Package: dnutilsMethod/Function: ifnone导入包: dnutils每个示例代码 ... make 2nd youtube channel