dataframe_name[with(dataframe_name, order(-column_name)), ] Please observe the ‘-‘ negative sign before the column_name to sort in descending order Example 2 – Sort Data Frame in Descending Order In this exa
R语言使用sort函数对日期向量数据进行排序、默认从小到大升序排序 # 对向量进行排序,默认采用升序排序方式 x <- c(3,5,2,8,6,9,7,4) print(sort(x)) print(sort(x,decreasing=T)) # 默认的降序参数设置为F,如果设置为T则采用降序排序 # 日期字符串向量 szDate <- c("2014-1-1","2014-3-1","...
存在这样的需求: 针对每列的值, 对列进行排序. 这样处理过数据后, 在excel中对数据作图时, 使数据呈现有序. R中sort数据的时候, 如果数据中存在字符串, R会将数据转化为character之后, 再对数据进行排序. 这种情况, 在使用reshape2的dcast之后, 对dcast的结果排序的时候, 会出现这种问题. 解决方法是将characte...
# sort dataframe by column in r # select top N results birds[order(-birds$weight),][1:5,] We use two techniques to zero in on the results we’re interested in. First, we use a negative sign in from the variable to sort the results in descending order (the default is increasing or...
# Sort DataFrame on one columndf2<-df[order(df$price),]df2# Sort DataFrame one in ascending and another in descendingdf2<-df[order(df$price,-df$id),]df2 Yields below output. 2. Sort by dplyr Package Alternatively, you can use thearrange() functionfrom thedplyr packagetosort the ...
...= df.sort_values(by='age') print("按'age'列升序排序的结果:") print(sorted_df) # 按'score'列降序排序 sorted_df_desc...解决方案: sorted_df_reset = df.sort_values(by='age').reset_index(drop=True) 多列排序基本概念多列排序是指根据多个列的数据值对DataFrame...在多列排序...
To keep it as a dataframe, just add drop=False as shown below: debt[1:3, 2, drop = FALSE] Powered By payment 1 100 2 200 3 150 Powered By Selecting a specific column To select a specific column, you can also type in the name of the dataframe, followed by a $, and the...
To sort a data frame in R, we use the order() function. As in most of the languages, R has also the default value of sorting is ASCENDING. We can sort a data frame in descending order by passing a prefix sign minus (-) before the variable name. The below example shows how to us...
问将dataframe拆分为最小n个观察值，并对R中的所有行执行此操作EN我有一个关于通过函数将数据集划分为...
删除dataframe列(R)中的部分字符串如果你的字符串不是太花哨/复杂，可能最简单的做法是：...