summarise vs. summarise_each function in dplyr package 我正在尝试使用 dplyr 包将数据与 group_by 拆分后总结一个变量的值,以下代码工作正常,输出如下所示,但我不能用 summriase 替换 summarise_each 甚至只有一个列需要计算,不知道为什么? 1 2 iris %>% group_by(Species) %>% select(one_of(‘Sepal.L...
dplyr最常用的5个函数： • 按值筛选观测(filter())。 • 对行进行重新排序(arrange())。 ...
summarise(across(height:mass, ~ mean(.x, na.rm =TRUE)))#> # A tibble: 1 × 2#> height mass#> <dbl> <dbl>#> 1 174. 97.3# The _if() variants apply a predicate function (a function that# returns TRUE or FALSE) to determine the relevant subset of# columns. Here we apply mean...
r dplyr tidyverse 1个回答 0投票 我没有得到你预期的结果,但我认为这给了你你想要的。 .x 取代了 .,因为 group_map 需要一个带有两个参数的函数。 df %>% group_by(g) %>% group_map( function(.x, .y) { .x %>% summarise(res = mean(a + b)) %>% add_column(g = .y$g,...
对于复合函数，创建一个lambda表达式，而不是使用参数。尽管如此，现在tidyverse推荐使用lambda，即使我们传递...
The reason for the message “`summarise()` has grouped output by ‘X’. You can override using the `.groups` argument.” is that the dplyr package drops the last group variable that was specified in the group_by function, in case we are using multiple columns to group our data before ...
cyl有4,6,8三种取值，而gear有3,4,5三种取值，应该一共有9组，但我们这里只有8组，原因是cyl=8,...
In addition, a message informs you of that choice,unless the result is ungrouped, the option "dplyr.summarise.inform" is set toFALSE, or whensummarise()is called from a function in a package. Emphasis was mine. I did actuallyungroup()immediately aftersummarise(). Are the docs...
usedthese is a pair of functions to summarise package & function usage in Quarto documents consistent with knitr’s syntax highlighting: used_here() adds a nicely-rendered summary table of usage to a single document; used_there() harvests and consolidates the tables created above ready for site...
dplyr: 0.2 Author yhf8377 commented Aug 11, 2014 An as.numeric() call seems to be able to fix the problem. But this reinforces my doubt that the summarise() function may be using the first output's data type for all other outputs (i.e., when the first output is an NA, all oth...