Average of last 12 months

[ksingh19]

How can we get average of last 12 months for each row in the data?

Thanks for your help!

[williaml]

Hi, a reproducible example would help. What have you tried?

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.2…

Otherwise, have a look at these:

Calculate the average daily and monthly - tidyverse - Posit Community (rstudio.com)

Summarize Time Series Data by Month or Year Using Tidyverse Pipes in R | Earth Data Science - Earth Lab

[technocrat]

m <- matrix(sample(1:12,144,replace = TRUE), ncol = 12, nrow = 12)
colnames(m) <- month.abb
m <- cbind(m[,7:12],m)
l <- (dim(m)[2] - 11):dim(m)[2]
m[,l] |> rowMeans(x = _, na.rm = TRUE)
#>  [1] 5.500000 7.583333 7.500000 5.416667 7.750000 7.000000 6.166667 6.250000
#>  [9] 7.250000 8.083333 5.416667 7.166667

^{Created on 2023-08-10 with reprex v2.0.2}