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So " xx yy 11 22 33 " will become "xxyy112233". How can I achieve this? 9 Answers 9
Can anyone tell me how to find the common elements from multiple vectors? a <- c(1,3,5,7,9) b <- c(3,6,8,9,10) c <- c(2,3,4,5,7,9) I ...
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June 2, 2022
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This is meant to be a FAQ question, so please be as complete as possible. The answer is a community answer, so feel ...
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May 31, 2022
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I have a big performance problem in R. I wrote a function that iterates over a data.frame object. It simply adds a new ...
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May 30, 2022
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Working with a data frame similar to this: set.seed(100) df <- data.frame(cat = c(rep("aaa", 5), rep("bbb", 5), rep("ccc", 5)), val = runif(15)) df ...
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May 27, 2022
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I have some trouble to convert my data.frame from a wide table to a long table. At the moment it looks like this: ...
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May 27, 2022
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I saw in a tutorial about regression modeling the following command: myFormula <- Species ~ Sepal.Length + Sepal.Width + Petal.Length + Petal.Width What ...
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May 27, 2022
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With this data frame (“df”): year pollution 1 1999 346.82000 2 2002 134.30882 3 2005 130.43038 4 2008 88.27546 I try to create ...
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May 24, 2022
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I want to use dplyr::mutate() to create multiple new columns in a data frame. The column names and their contents should be dynamically ...
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May 24, 2022
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