I'm trying the gbm.step function from dismo package to fit a gbm model using cross-validation.
According to the dismo document(https://cran.r-project.org/web/packages/dismo/dismo.pdf, page 32), the return value of gbm.step is a gbm object. The gbm object has a "cv.fitted" value which refers to the cross-validation predicted values (https://cran.r-project.org/web/packages/gbm/gbm.pdf, page 15).
I want to obtain the "cross-validation predicted values", but I found the return value from gbm.step function only contains "fitted" not "cv.fitted".
This document (https://cran.r-project.org/web/packages/dismo/vignettes/brt.pdf, page 5) says "fitted" is the fitted values from the final tree, on the response scale.
I'm not sure can I use this "fitted" to say it is the "cross-validation predicted values"? Otherwise, how can I get the cv predicted value from gbm.step?