I have a list of data frames whose dimensions are smaller than data frames in a second list. I would like to left merge them and then interpolate, to fill in the missing values. I have tried using smooth.spline() but this doesn't work with the NA's. Any suggestions?
x <- tibble::tibble( x = 1:9, y = 1 ) y <- tibble::tibble( x = c(1,3,5,6,9), alpha = c(2,7,4,2,8) ) z = dplyr::left_join(x = x, y = y) z %>% dplyr::mutate( beta = stats::smooth.spline(x = alpha, spar = 0.5)$y )