Darrin, what version of R are you using have the same question. I have been
using the gbm package without problem with R 2.7.1. but I recently switched
computers and downloaded 2.7.2. I used the following code, which works fine
on my old computer with 2.7.1 but I get an error with the new version.
> fin.tc5.lr01 <- gbm.step(data=fin,
+ gbm.x = 7:14,
+ gbm.y = 24,
+ family = "bernoulli",
+ tree.complexity = 5,
+ learning.rate = 0.01,
+ bag.fraction = 0.5)
Error: could not find function "gbm.step"
Darin Brooks wrote:
>
> Good afternoon
>
> Has anyone tried using Dr. Elith's BRT script? I cannot seem to run
> gbm.step from the installed gbm package. Is it something external to
> gbm?
>
> When I run the script itself
>
> <- gbm.step(data=model.data,
>
> gbm.x = colx:coly,
>
> gbm.y = colz,
>
> family = "bernoulli",
>
> tree.complexity = 5,
>
> learning.rate = 0.01,
>
> bag.fraction = 0.5)
>
>
> ... I keep encountering the same error:
>
> ERROR:
> unexpected ')' in "bag.fraction = 0.5)"
>
> I've tried all sorts of variations (such as)
>
> sep22BRT.lr01 <- gbm{data=sep22BRT,
> gbm.x = sep22BRT[,3:42],
> gbm.y = sep22BRT[,1],
> family = "bernoulli",
> tree.complexity = 5,
> learning.rate = 0.01,
> bag.fraction = 0.5}
>
> and cannot find the problem.
>
> Is there a glaring error that I am overlooking?
>
>
> Darin Brooks
> Geomatics/GIS/Remote Sensing Coordinator
> Kim Forest Management Ltd. Cranbrook Office
> Cranbrook, BC
>
>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>
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