Forum: help

RE: ordered factors [ Reply ] By: Evick Mestre on 2022-03-10 22:32	[forum:49367] Script_Rforgetxt.txt (6) downloads
Hi Maya, I tried with the new version. This solved the problem for GLM, GBM, GAM, ANN and MARS models, but I still get the same error message with the RF model. Here is my code and the output of Biomod2 functions as an attachment. Thank you

RE: ordered factors [ Reply ]
By: Maya Guéguen on 2022-03-08 14:50

[forum:49362]

Hello Evick,

I released a new version of biomod2 (4.0), available on github.
You can install it with the following commands :
library(devtools)
install_github("biomodhub/biomod2")

and check the new documentation here :
https://biomodhub.github.io/biomod2/index.html

Help messages should also be reported onto the github in order to gather everything in the same place :)
https://github.com/biomodhub/biomod2/issues

Could you try with this new biomod2 version ?
You might have to adapt a bit your code (function and parameter names...) but I will be more able to help you then.

Maya

ordered factors [ Reply ]
By: Evick Mestre on 2022-03-03 05:03

[forum:49359]

Hi,

is it possible to use ordered factors for exploratory variables in BioMod2 ?

When i use "as.factor()" to convert a variable into a factorial one followed by factor(x, levels=c(...)) , there is no problem.
But when I try order the levels using "factor(x, ordered = TRUE, levels=c(....))" or "as.ordered(X)", I get the following error message when I run "BIOMOD_Modeling()"

-=-=-=--=-=-=- P.A.ERS_AllData_RUN1

Model=GLM ( quadratic with no interaction )
Stepwise procedure using AIC criteria
selected formula : P.A.ERS ~ DEP_SUR_SYNTH + VERSANT + TEXTB_SYNTH + EXPOSITION + DRAI_SYNTH
<environment: 0x000000003671a5f0>
Error in validObject(.Object) :
invalid class “GLM_biomod2_model” object: invalid object for slot "expl_var_type" in class "GLM_biomod2_model": got class "list", should be or extend class "character"

Is there a way to order factors compatible with "BIOMOD_Modeling()" ?

Thank you,
Evick