Top "Rowsum" questions

Sum rows in data.frame or matrix

I have a very large dataframe with rows as observations and columns as genetic markers. I would like to create …

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Row and column sums in R

This is an example of how my data set (MergedData) looks like in R, where each of my participants (5 rows) …

r rowsum

How to get rowSums for selected columns in R

I am a newbie to R and seek help to calculate sums of selected column for each row. My simple …

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rowsum for matrix over specified number of columns in R

I'm trying to get the sum of columns in a matrix in R for a certain row. However, I don't …

r matrix diagonal rowsum

Omit inf from row sum in R

So I am trying to sum the rows of a matrix, and there are inf's within it. How do I …

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Sum all columns whose names start with a pattern, by group

I'm fairly new to R and I'm trying to sum columns by groups based on their names. I have a …

r rowsum

R Programming - Sum Elements of Rows with Common Values

Hello and thank you in advance for your assistance, (PLEASE Note Comments section for additional insight: i.e. the cost …

r aggregate rowsum

how to use the 'group' argument in function rowsum

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r dataframe rowsum

Row-wise count of values that fulfill a condition

I want to generate a new variable which the number of times some columns satisfy a criterion (like ==, <, >). …

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