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dorit
2012 Apr 26
2
How does .Fortran "dqrls" work?
Hi, all.
I want to write some functions like glm() so i studied it.
In glm.fit(), it calls a fortran subroutine named "dqrfit" to compute least
squares solutions
to the system
x * b = y
To learn how "dqrfit" works, I just follow how glm() calls "dqrfit" by my
own example, my codes are given below:
> qr <-
> matrix(c(4.17,5.58,5.18,6.11,4.50,4.61,5.17,4.53,5.33,5.14,2.3,1...