[R] comparing two vectors

[Berend Hasselman]

On 29-11-2012, at 14:28, soham chakraborty wrote:

> Hello,
> I am performing Newton Raphson iteration where the parameter vector which I
> want to optimize is an *nx1* vector.

Are you trying to solve a system of nonlinear equations?
Have a look at package nleqslv.

Are you max-/min-imizing a function?
Look at R provided functions such as optim, nlminb and the CRAN Optimizing Task View. 

> I am running a while loop which will continue unless a stopping condition is
> satisfied
> Now, the stopping condition will have to be such that the parameter vector
> after two successive iterations are very close to each other,*component
> wise*.
> I have tried the* all* function, in which case the number of iterations are
> enormous.
> Is there any better way to do this?

How have you been using all()?

Berend