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 example, we will sort our Data Frame in descending order. r_dataframe_sort_desc.R...
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","...
sort(vec1) # ascending sort 升序 sort(vec1, decreasing = TRUE) # Descending sort 降序 1. 2. 或者 vec1[order(vec1)] # ascending sort vec1[rev(order(vec1))] # descending sort 1. 2. 自定义向量排列 seq(1, 10, by = 2) # diff between adj elements is 2 相邻元素差为2 seq(1, ...
# sort dataframe by column in r # select top N results birds[order(-birds$weight),][1:5,] We use two techniques to zero in on the results we’re interested in. First, we use a negative sign in from the variable to sort the results in descending order (the default is increasing or...
R中sort数据的时候, 如果数据中存在字符串, R会将数据转化为character之后, 再对数据进行排序. 这种情况, 在使用reshape2的dcast之后, 对dcast的结果排序的时候, 会出现这种问题. 解决方法是将character列分离, 仅选择数字列进行排序. 如果存在字符和数字列混排的需求, 只能自己在顺序上做点功夫了....
# Sort DataFrame on one columndf2<-df[order(df$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 ...
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...
...= 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...
R Dataframe 删除重复项/选择要删除的重复项也许你想要这样的东西：首先，我们用NA替换所有空白，然后我们...