Example 1: Sort Data Frame by Multiple Columns with Base R (order Function) Example 2: Sort Data Frame by Multiple Columns with dplyr Package (arrange Function) Example 3: Sort Data Frame by Multiple Columns with data.table Package (setorder Function) ...
在Day列中有NA可以提供潜在的优势。显然,它总是取决于任务。请参阅?lag以获得澄清。使用{dplyr}中的...
然后,您可以使用奇妙的tidyverts工具:Tidy tools for time series 它们使用ggplot2和dplyr。这些工具的...
下面是 data.table 最新性能评测,在GroupBy算子处理 50G 数据的性能对比,data.table 以 123s 的成绩完爆同类工具。 在评测中我们看到原始 dplyr 的性能相对 data.table 比慢了 20倍(得益于 data.table 处理数据过程内存拷贝最小化)。 目前data.table 开发了 data.table(R) 和 datatable(Python) 两个版本, ...
I've started a fresh Positron project using R 4.1.1. After successfully installing {renv}, I'm able to callrenv::install()on most R packages without any issues. renv::install("dplyr")## Downloading packages ---#- Downloading cli from CRAN ... OK [554.8 Kb in 0.28s]#- Downloading ...
OK [file is up to date] # Successfully downloaded 1 package in 0.55 seconds. # # The following package(s) will be installed: # - DBI [1.2.3] # - duckdb [1.0.0-2] # These packages will be installed into "~/Projects/dockerized-duckplyr-demo/renv/library/linux-ubuntu-jammy/R-4.4/...
首先,按GAME_DATE_EST排列,然后,创建一个变量,其中包含lag艾德获胜的GAME_ID,并填充NA。然后,fill...
Date('1999/01/01'), as.Date('2020/01/01'), by="day"), 100000, replace = TRUE) my_data = data.frame(id, results, date_exam_taken) my_data <- my_data[order(my_data$id, my_data$date_exam_taken),] my_data$general_id = 1:nrow(my_data) my_data$exam_number = ave(my_...
library(dplyr) mydata <- mydata %>% mutate(event_dt = as.Date(event_date, format = "%d/%m/%Y"), issue_dt = as.Date(issue_date, format = "%d/%m/%Y")) %>% group_by(patid) %>% mutate(new = as.numeric(any(event_dt < issue_dt) & any(event_dt > issue_dt))) %>% se...
第二个数据与第一个数据不同: