simpler formula for yhat

2021-04-08 10:11:09 -07:00 · 2021-04-08 10:11:09 -07:00 · 67f4d79c4a
commit 67f4d79c4a
parent 50adb6cd9c
1 changed files with 1 additions and 3 deletions
--- a/src/recipes.jl
+++ b/src/recipes.jl
@ -191,10 +191,8 @@ end
    @series begin
        ()
    end
-    X = hcat(ones(length(x)), x)
-    yhat = X * (X'X \ X'y)
    @series begin
-        y := yhat
+        y := mean(y) .+ cov(x, y) / var(x) .* (x .- mean(x))
        seriestype := :path
        label := ""
        primary := false