Calculate the Sum of Matrix or Array columns in R Programming - colSums() Function Last Updated : 03 Jun, 2020 Comments Improve Suggest changes Like Article Like Report colSums() function in R Language is used to compute the sums of matrix or array columns. Syntax: colSums (x, na.rm = FALSE, dims = 1) Parameters: x: matrix or array dims: this is integer value whose dimensions are regarded as ‘columns’ to sum over. It is over dimensions 1:dims. Example 1: Python3 # R program to illustrate # colSums function # Initializing a matrix with 3 # rows and 3 columns x <- matrix(rep(1:9), 3, 3) # Getting the matrix representation x # Calling the colSums() function colSums(x) Output: [, 1] [, 2] [, 3] [1, ] 1 4 7 [2, ] 2 5 8 [3, ] 3 6 9 [1] 6 15 24 Example 2: Python3 # R program to illustrate # colSums function # Initializing a 3D array x <- array(1:12, c(2, 3, 3)) # Getting the array representation x # Calling the colSums() function colSums(x, dims = 1) colSums(x, dims = 2) Output: ,, 1 [, 1] [, 2] [, 3] [1, ] 1 3 5 [2, ] 2 4 6,, 2 [, 1] [, 2] [, 3] [1, ] 7 9 11 [2, ] 8 10 12,, 3 [, 1] [, 2] [, 3] [1, ] 1 3 5 [2, ] 2 4 6 [, 1] [, 2] [, 3] [1, ] 3 15 3 [2, ] 7 19 7 [3, ] 11 23 11 [1] 21 57 21 Comment More infoAdvertise with us Next Article Calculate the Sum of Matrix or Array columns in R Programming - colSums() Function K Kanchan_Ray Follow Improve Article Tags : R Language R Matrix-Function Similar Reads R Tutorial | Learn R Programming Language R is an interpreted programming language widely used for statistical computing, data analysis and visualization. R language is open-source with large community support. R provides structured approach to data manipulation, along with decent libraries and packages like Dplyr, Ggplot2, shiny, Janitor a 4 min read R Programming Language - Introduction R is a programming language and software environment that has become the first choice for statistical computing and data analysis. Developed in the early 1990s by Ross Ihaka and Robert Gentleman, R was built to simplify complex data manipulation and create clear, customizable visualizations. Over ti 4 min read R-Data Frames R Programming Language is an open-source programming language that is widely used as a statistical software and data analysis tool. Data Frames in R Language are generic data objects of R that are used to store tabular data. Data frames can also be interpreted as matrices where each column of a matr 6 min read Read contents of a CSV File in R Programming - read.csv() Function read.csv() function in R Language is used to read "comma separated value" files. It imports data in the form of a data frame. The read.csv() function also accepts a number of optional arguments that we can use to modify the import procedure. we can choose to treat the first row as column names, sele 3 min read R-Data Types Data types in R define the kind of values that variables can hold. Choosing the right data type helps optimize memory usage and computation. Unlike some languages, R does not require explicit data type declarations while variables can change their type dynamically during execution.R Programming lang 5 min read Data Visualization in R Data visualization is the technique used to deliver insights in data using visual cues such as graphs, charts, maps, and many others. This is useful as it helps in intuitive and easy understanding of the large quantities of data and thereby make better decisions regarding it.Data Visualization in R 6 min read apply(), lapply(), sapply(), and tapply() in R In this article, we will learn about the apply(), lapply(), sapply(), and tapply() functions in the R Programming Language. The apply() collection is a part of R essential package. This family of functions helps us to apply a certain function to a certain data frame, list, or vector and return the r 4 min read R-Matrices R-matrix is a two-dimensional arrangement of data in rows and columns. In a matrix, rows are the ones that run horizontally and columns are the ones that run vertically. In R programming, matrices are two-dimensional, homogeneous data structures. These are some examples of matrices:R - MatricesCreat 10 min read Functions in R Programming A function accepts input arguments and produces the output by executing valid R commands that are inside the function. Functions are useful when you want to perform a certain task multiple times. In R Programming Language when you are creating a function the function name and the file in which you a 8 min read R - Bar Charts Bar charts provide an easy method of representing categorical data in the form of bars. The length or height of each bar represents the value of the category it represents. In R, bar charts are created using the function barplot(), and it can be applied both for vertical and horizontal charts.Syntax 4 min read Like