[R] TreeBUGS - subscript out of bounds

Eric Berger ericjberger at gmail.com
Wed Feb 21 15:45:03 CET 2018

Hi Max,
Here's an example that will generate that error. Maybe it will point you to
your problem.

# create a 2x2 matrix
>  m <- matrix(1:4,nrow=2)

# refer to column 3 - which does not exist
> m[,3]
# Error in m[, 3] : subscript out of bounds


On Wed, Feb 21, 2018 at 4:35 PM, Max Hennig <MaxHennig13 at gmx.de> wrote:

> Dear all,
> I've only (very) recently started to use R (so please be easy on me if I
> may omit to mention relevant information or have overlooked fairly basic
> steps to solving the problem, since I do not have a lot of experience)
> because I'm interested in multinomial processing tree modeling with the
> TreeBUGS package (Heck, Arnold & Arnold 2017 - TreeBUGS: An R package for
> hierarchical multinomial-processing-tree modeling).
> I have attempted to conduct a permutation test with my dataset, as
> described on pages 5-6 of the paper. I've brought the data in the necessary
> long format (participant case in column 1, stimulus index in column 2,
> observed response in column 3) and specified the tree structure as
> described in the paper, in my case four trees with two possible responses
> each.
> When specifying the test, I am given the message:
> Error in M[, tree] : subscript out of bounds
> Though I've found some information on this general error online, all of it
> applies to different tests and didn't help me to solve the problem.
> Has anyone of you encountered this error before, or has a suggestion for
> me?
> Best,
> Max
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