This function generates a sequence of `mtry`

values for random forests.

`var_seq(p, classification = FALSE, len = 3)`

p

The number of predictors

classification

Is the outcome a factor (`classification = TRUE`

or numeric?)

len

The number of `mtry`

values to generate.

a numeric vector

If the number of predictors is less than 500, a simple sequence of values of
length `len`

is generated between 2 and `p`

. For larger numbers of
predictors, the sequence is created using `log2`

steps.

If `len = 1`

, the defaults from the `randomForest`

package are
used.

# NOT RUN { var_seq(p = 100, len = 10) var_seq(p = 600, len = 10) # }