Example: Delete Column Names of Data Frame Using names() Function In this example, I’ll show how to remove the column names from our data frame in R. For this, we can use thenames functionand theNULL valueas s
参考——http://stackoverflow.com/questions/6286313/remove-an-entire-column-from-a-data-frame-in-r 转载自:http://blog.sina.com.cn/s/blog_80572f5d0101anxw.html
The following R code checks whether the column names of our data frame (i.e. names(data)) are in a vector of variable names we want to remove (i.e. c(“x1”, “x3”)). The bang in front of the names function tells R to drop variables that are fitting this logical condition....
Simple R functions to keep or remove data frame columns This function removes columns from a data frame by name: removeCols <- function(data, cols){ return(data[,!names(data) %in% cols]) } This function keeps columns of a data frame by name: keepCols <- function(data, cols){ return(...
myData <- read.csv("c:/myInputData.csv", header=FALSE) # import csv file 可以用colClass来人为设定数据框中每列的数据类型,这样处理效率更高,否则是自动识别数据类型的。 write.csv(rDataFrame, "c:/output.csv") # export 1. 2. 如何浏览 删除控制台的对象 ...
add_significance(): add a column containing the p-value significance level 其他 doo(): alternative to dplyr::do for doing anything. Technically it uses nest() + mutate() + map() to apply arbitrary computation to a grouped data frame. sample_n_by(): sample n rows by group from a tabl...
df = Testdata[,!grepl(“*Type”, names(Testdata))] Note: This will remove column that end with “Type” that is “Vendor Type” Scenario 2 – (Keeping required columns in a data frame) Method 1: Keep column by name We are going to keepVendor TypeandCountry ...
WGCNA(Weighted GeneCo-Expression Network Analysis,加权共表达网络分析)分析方法旨在寻找协同表达的基因模块(module),并探索基因网络与关注的表型之间的关联关系,以及网络中的核心基因。我们今天介绍下在R语言如何实现WGCNA,此包还有一个限制那就是样本总数必须大于15。
yield_data_wide%>%head()%>%gt(groupname_col="crop",rowname_col="Country")%>%tab_footnote(footnote="Yield in Tonnes/Hectare",locations=cells_column_labels(columns=1:3# note)) image-20201011222212191 添加来源注释: 代码语言:javascript
removeColumnAt(index:uint)— 方法, 类 fl.controls.DataGrid 删除位于 columns 数组中指定索引处的列。 removeColumnFromSort— 属性, 类 mx.events.AdvancedDataGridEvent 如果为 true,则从多列排序中删除列。 removeController(controller:flashx.textLayout.container:ContainerController)— 方法, 接口 flashx.textLa...