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How to find the number of zeros in each row of an R data frame?
To find the number of zeros in each row of an R data frame, we can follow the below steps −
First of all, create a data frame.
Then, use rowSums function to find the number of zeros in each row of the data frame.
Example
Create the data frame
Let’s create a data frame as shown below −
x<-rpois(25,2) y<-rpois(25,2) z<-rpois(25,2) df<-data.frame(x,y,z) df
Output
On executing, the above script generates the below output(this output will vary on your system due to randomization) −
x y z 1 3 1 1 2 3 4 3 3 2 5 3 4 1 0 3 5 2 2 2 6 1 1 2 7 3 1 5 8 1 3 2 9 1 2 4 10 1 4 4 11 2 2 1 12 3 3 2 13 1 4 1 14 2 3 1 15 3 4 4 16 2 0 1 17 0 4 1 18 4 1 2 19 2 5 2 20 0 1 1 21 1 2 2 22 4 2 3 23 2 4 2 24 5 0 0 25 1 2 3
Find the number of zeros in each row
Using rowSums function to find the number of zeros in each row of the data frame df −
x<-rpois(25,2) y<-rpois(25,2) z<-rpois(25,2) df<-data.frame(x,y,z) df$Total_0s<-rowSums(df==0) df
Output
x y z Total_0s 1 1 1 1 0 2 1 0 3 1 3 2 2 3 0 4 2 0 1 1 5 3 2 2 0 6 2 4 3 0 7 2 1 0 1 8 0 0 3 2 9 4 2 0 1 10 1 2 2 0 11 2 2 0 1 12 1 2 3 0 13 1 1 1 0 14 1 0 2 1 15 2 7 2 0 16 3 3 1 0 17 1 2 1 0 18 1 1 0 1 19 2 1 0 1 20 2 1 1 0 21 1 4 2 0 22 0 1 3 1 23 3 4 2 0 24 2 2 6 0 25 4 5 1 0
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