What package do I load to use the emmeans function?

[Kate88]

I need to do a pairwise comparison using emmeans but Posit is unable to find the emmeans function. I believe I need to load a package, but I do not know which one. Here is the error I receive:

Error in emmeans(Leaf_area_lm, ~Propagation) :
could not find function "emmeans"

Can anyone advise which package to load to use the emmeans function? Last year I used the performance package, but this year I receive an error saying there is no package called performance. What has replaced the performance package?

[FJCC]

There is an emmeans() function in the emmeans package. The description of the function says:

Compute estimated marginal means (EMMs) for specified factors or factor combinations in a linear
model; and optionally, comparisons or contrasts among them. EMMs are also known as least-
squares means.

Here is a link to the CRAN page of the package.

emmeans: Estimated Marginal Means, aka Least-Squares Means

[Kate88]

Thank you for your help! I have tried to load the emmeans package but I receive the following error:

Error in library(emmeans) : there is no package called ‘emmeans’

Do you know if the emmeans package been replaced by another package, and if so, what it is now called?

[FJCC]

I just successfully installed that package with

install.packages("emmeans")

[Kate88]

Thank you again for your help! I have now been able to instal the emmeans package. Very grateful for your quick reply!