[R] Lee carter model

Hi everybody, I'm running codes for for a Lee carter modeling. I compute the demogdata function in the package demography.  Age is a class of factor Base-demogdata(data=x,pop=y,ages=AGE,years=YEAR,type=mortality,label=City,name=Hommes,lambda=1)   Now, I try to run codes for lee carter model,

Re: [R] Lee carter model

The Posting Guide warns you to not post in HTML format (it messes up R code examples). It also warns you to supply reproducible examples (we should be able to paste your code into a fresh R session and see essentially what you see). The warning message means you have given the function a