I want to implement the following code, but I am getting some error:
> lsmeans = lsmeans::lsmeans ### Uses the lsmeans function
> leastsquare = lsmeans(model,
NOTE: Results may be misleading due to involvement in interactions
Error in cld(leastsquare, alpha = 0.05, Letters = letters) :
could not find function "cld"
How to fix this error?