[Bug]: function auc() report error when used alone

[PetiteTong]

[Bug]: function auc() report error when used alone

[PetiteTong]

Dear Vignali,

Hello, and thank you very much for creating the initial SDMtune package and continuously updating its features; it's truly invaluable. However, there's an unexpected issue that I would like your assistance with. When I was computing the maxent model in 2022, I utilized the chessboard grid data splitting method from the ENMenval package to increase data availability and reduce spatial autocorrelation. I saved the model at that time. Now, I intend to use this model to generate variable importance plots and calculate AUC TSS data. However, some functionalities are currently incompatible.

Could you please help resolve this issue?

Thank you for your attention to this matter.

Best regards,
Xiaotong