[R] How to adjust the stack size of R

[Christofer Bogaso]

Hi Uwe, you said 'You need at least 76252 obs and that means the
design matrix needs > 46
Gbyte! '

Can you please explain me how you come up with these 2 numbers? Is the
number '76252  = 76251 + 1 (1 for the intercept in the model)' somehow
related with the Saturated model?

Thanks,

On Sun, Apr 1, 2012 at 10:46 PM, Uwe Ligges
<ligges at statistik.tu-dortmund.de> wrote:
>
>
> On 01.04.2012 08:46, Xiaobo Gu wrote:
>>
>> 2012/3/31 Uwe Ligges<ligges at statistik.tu-dortmund.de>
>>
>>>
>>>
>>> On 30.03.2012 03:16, Xiaobo Gu wrote:
>>>
>>>> Hi,
>>>>
>>>> I got a stack overflow error when training a glm model with a very long
>>>> formula.
>>>>
>>>
>>> I just tried with a formula of length 1000. How long was yours?
>>> Which version of R? Where is the repdroducible example?
>>>
>>>
>> We have a glm formula with 76251 terms, the text of the formula is about
>> 150K, we are using R 2.14.2
>>
>> Xiaobo Gu
>>
>
>
> You would need do compile your own copy of R and increase the stack size, on
> the slow machines around here, it takes even hours just to parse the
> formula.
>
> Aynway, I canmnot believe you have a sufficient number of observations in
> the end:
>
> You need at least 76252 obs and that means the design matrix needs > 46
> Gbyte! Hence a sensible calculation is not really possible unless you have
> really big machines around.
>
> Best,
> Uwe Ligges
>
>
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