[R-br] Erro ao rodar Wibugs/Openbugs

[Alisson Lucrécio]

Caro Victor,

Se der certo teste esse exemplo.

library(rstan)

treatment_level <- c("0", "5", "10", "15")
repetition_number <- 20
response_mean <- c(100, 94, 88, 82)

treatment <- gl(n = length(treatment_level), k = repetition_number, labels
= treatment_level)
str_error <- 2

response_temp <- sapply(response_mean, function(x){
  response <- rnorm(n = repetition_number, mean = x, sd = str_error)
})

response <- c(response_temp)

plot(response ~ treatment)

summary(lm(response ~ treatment -1))

mean(response)
sd(response)

stan_data <- list(N = length(response), I = length(treatment_level),
Treatment=as.numeric(treatment), Response = response)

# Bayesian method for estimate mean and standard error by treatment

stan_modelcode <- "
data {                                    // data setup
  int<lower=0> N;                         // sample size
  int<lower=1> I;                         // number of treatments
  real Response[N];                       // Response
  int<lower=1, upper=I> Treatment[N];     // Treatment
}

parameters {
  real mu[I];
  real<lower=0, upper=100> sigma[I];
}

model {
  //Priors
  mu ~ normal(0, 100);
  sigma ~ uniform(0, 100);
  //Likelihood
  for(i in 1:N) {
    Response[i] ~ normal(mu[Treatment[i]], sigma[Treatment[i]]);
  }
}
"

fit <- stan(model_code = stan_modelcode, data = stan_data, iter = 1000,
chains = 3,
            verbose = TRUE)

plot(fit)

2014-11-08 14:09 GMT-02:00 Alisson Lucrécio <
alisson.lucrecio em ifgoiano.edu.br>:

> Use esse código.
>
> Sys.setenv(MAKEFLAGS = "-j4")
> source('http://mc-stan.org/rstan/install.R', echo = TRUE,
> max.deparse.length = 2000)
> install_rstan()
>
> 2014-11-08 13:41 GMT-02:00 Victor Eduardo [via R-br] <
> ml-node+s2285057n4663483h9 em n4.nabble.com>:
>
>> Oi Alisson, o pacote deu erro para instalar. Tanto pelo arquivo quando
>> pelo código install.packages
>>
>>
>> Esse erro que está acontecendo comigo é no modelo? Porque aparentemente
>> está tudo ok com ele.
>>
>> Em 8 de novembro de 2014 13:01, Alisson Lucrécio <[hidden email]
>> <http://user/SendEmail.jtp?type=node&node=4663483&i=0>> escreveu:
>>
>>> Victor,
>>>
>>> Boa tarde.
>>>
>>> Use o pacote rstan.
>>>
>>> Att.
>>>
>>>
>>> 2014-11-08 12:53 GMT-02:00 Victor Eduardo [via R-br] <[hidden email]
>>> <http://user/SendEmail.jtp?type=node&node=4663483&i=1>>:
>>>
>>> Pessoal, estou rodando um modelo de regressão pelo Openbugs. Na hora de
>>>> rodar ele da o seguinte erro durante o processo
>>>>
>>>>
>>>> Error in BRugs::samplesSet(parametersToSave) :
>>>>   model must be initialized before monitors used
>>>>
>>>>
>>>>
>>>>
>>>> O que seria exatamente isso?  Já mexi em tudo quanto é configuração e
>>>> código do meu modelo e nada até agora
>>>>
>>>>
>>>>
>>>> Atenciosamente,
>>>>
>>>>
>>>> Victor Eduardo
>>>>
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>>> --
>>> Alisson Lucrecio da Costa
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> --
> Alisson Lucrecio da Costa
>



-- 
Alisson Lucrecio da Costa
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