Web1 sep. 2024 · library (dplyr) #rename column in position 2 to 'total_points' df <- df %>% rename_at(2, ~' total_points ') #view updated data frame df team total_points assists rebounds 1 A 99 33 30 2 B 90 28 28 3 C 86 31 24 4 D 88 39 24 5 E 95 34 28. Notice that both methods produce the same result. Additional Resources. The following tutorials … WebR Matrix. In this article, you will learn to work with matrix in R. You will learn to create and modify matrix, and access matrix elements. Matrix is a two dimensional data structure in R programming. Matrix is similar to vector but additionally contains the dimension attribute. All attributes of an object can be checked with the attributes ...
How to Use rbind in R (With Examples) - Statology
Web21 apr. 2024 · A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. WebLearn to create a matrix in R, subset, modify, access add usage name rows and column, combine vectors into matrix, matrix operations and change dimension. ... You cannot create a matrix after which matrix() function and specifying the data and the number of rows also columns to make the matrix. # Create a numeric matrix m <- matrix(1:6, … pictures of living rooms with green walls
How can I have a latex type expression as a column name in R?
Web19 apr. 2014 · I am trying to reshape Data from wide to long in R. my data in wide format looks like this: I have the following Data-Matrix: in the rows i have the different companies, and in the columns in have different variables from different years. (earnings_2012, earnings_2011, earnings_2010,...,tot_assets_2012,tot_assets_2011, and so on. Webmatrix (data = NA, nrow = 1, ncol = 1, byrow = FALSE, dimnames = NULL) as.matrix (x, …) # S3 method for data.frame as.matrix (x, rownames.force = NA, …) is.matrix (x) Arguments data an optional data vector (including a list or expression vector). Non-atomic classed R objects are coerced by as.vector and all attributes discarded. nrow Web23 mei 2024 · Any single element or cell value can also be fetched from the matrix, by simply specifying the row name and column name as the indexes for retrieval. Example: R mat <- matrix(letters[1:12], ncol = 3) # naming columns colnames(mat) <- c("C1","C2","C3") rownames(mat) <- c("R1","R2","R3","R4") print ("Original Matrix") print … pictures of living room additions