[R] error in solve_technical question

[Uwe Ligges]

Jonathan Charrier wrote:
> Hi everybody,
> 
> it's a technical question .
> 
> i have a matrix with 30 columns and 40000 rows,
> i start my program and  i found this error:
> 
> "error in solve.default(sBB + Z[,,i] %*% Gamma %*% t(Z[,,i])):
> system is computationally singular: reciprocal condition number = 
> 7.6377e-018 "
> 
> is it R limit?

Well, if the system is computationally (=almost) singular, so it is very 
dangeraous to do any computations: your solution can be ways off. You 
are protected against interpreting unsensible results.

Uwe Ligges


> 
> thanks a lot.
> 
> Jonathan Charrier
> 
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