Top "Rowsum" questions

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

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

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

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

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

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

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

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

I am trying to create a Total sum column that adds up the values of the previous columns. However I …