If you want to remove duplicated elements, use !duplicated(), where ! is a logical negation: x[!duplicated(x)] ## [1] 1 4 5 6 Following this way, you can remove duplicate rows from a data frame based on a column
42. How to remove duplicate values by a column Suppose you have a data consisting of 25 records. You are asked to remove duplicates based on a column. In the example, we are eliminating duplicates by variable y. data = data.frame(y=sample(1:25, replace = TRUE), x=rnorm(25)) R B...
This drop function can be used for removing unwanted columns in R, especially if you need to run “drop columns” on three to five at a time. Better yet, since the underlying operation (remove column in r by name) is very transparent, it will be easy for others to understand your code...
bind_cols [dplyr] – Bind columns and vectors. bind_rows [dplyr] – Bind rows of data sets. boxplot – Create a boxplot. break – Break for-loop in R. call – Create objects of the class call. case_when [dplyr] – Distinguish between cases based on logical conditions. casefold – ...
Delete/remove a Visual C# class Deleting a Table from Database (MS Access) Deleting columns from multidimensional array Deleting rows conditionally from a DataTable Demonstrating Array of Interface Types (using runtime polymorphism) in C# dependecy walker for .Net assemblies Dependency injection for ...
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NetwEdges: data.frame representing edges of the network, with these columns: From, To, Weight (the Depth level where the link connection has been discovered) and Type (number 1 for internal links, number 2 for external links). Rcrawler(Website = "http://glofile.com/", no_cores = 4,...
Add onClick event to Label control add onClientClick from code behind to image button add pagebreak in pdf file Add programmatically built table to Panel control Add scroll bar inside the modal pop up Add Some Text to DIV Add space in Columns of asp:CheckBoxList add text to input type = ...
Column chromatographic purifications were performed on the Merck KGaA silica gel (pore size 60 Å, 230–400 mesh particle size). Alternatively, flash chromatography was performed with Isco CombiFlash Companion systems using prepacked silica gel columns (40–60 μm particle size RediSep). 1H, ...
We have gross and budget information. So let’s add two colums: profit and percentage return on investment for further analysis. IMDB <- IMDB %>% mutate(profit = gross - budget, return_on_investment_perc = (profit/budget)*100) 3.3 Remove Columns ...