[R] Error in FUN(X[[i]], ...) : subscript out of bounds

[PIKAL Petr]

Hi

I am pretty sure that nobody will be able to answer your question due to
lack of information. 

Missing parentheses          here
bounds <- list(mtry = c(-2,  5)

Use ?debug if the error is from your function. 
If the code is coppied from some help page, use the data from help page and
try to find differences in your data and help data.

Provide reproducible example 

I get this
Error in train(Effort ~ ., data = tr, method = "rf", preProc = c("center",
: 
  could not find function "train"
Timing stopped at: 0 0 0.01

with your code

Cheers
Petr

> -----Original Message-----
> From: R-help <r-help-bounces using r-project.org> On Behalf Of Neha gupta
> Sent: Wednesday, December 4, 2019 12:37 PM
> To: r-help using r-project.org
> Subject: [R] Error in FUN(X[[i]], ...) : subscript out of bounds
> 
> Hi , I know nobody will respond to my query as I asked few in the past and
> no answer received for any of my questions. However, I am asking here with
> the hope it will get responded.
> 
> I am using bayesian optimization to tune the parameter of mtry for random
> forest but it gives me the error: Error in FUN(X[[i]], ...) : subscript
out of
> bounds
> 
> I am using the following code:
> 
> fit_bayes <- function(mtry) {
>   ## Use the same model code but for a single (C, sigma) pair.
>   mod <- train(Effort ~ ., data = tr,
>                method = "rf",
>                preProc = c("center", "scale", "zv"),
>                metric = "RMSE",
>                trControl = ctrl,
>                tuneGrid = data.frame(C = 10^(mtry)))
> 
>   list(Score = -getTrainPerf(mod)[, "TrainRMSE"], Pred = 0) }
> 
> 
> library(rBayesianOptimization)
> 
> bounds <- list(mtry = c(-2,  5)
> 
> 
> set.seed(8606)
> bo_search <- BayesianOptimization(fit_bayes,
>                                   bounds = bounds,
>                                   init_points = 10,
>                                   n_iter = 100,
>                                   acq = "ucb",
>                                   kappa = 1,
>                                   eps = 0.0) bo_search
> 
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> 
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