update sdm methods: add gbm2 for Boosted Regression Trees and refine svm2 for better classification

Author: elgabbas

R/mod_ssdm_fit.R

@@ -205,7 +205,7 @@ fit_sdm_models <- function(
 
   # Ensure that all methods are registered
   methods_to_copy <- c(
-    "fda2", "mda2", "glmnet2", "mars2", "ranger2", "rf2", "svm2")
+    "fda2", "mda2", "glmnet2", "mars2", "ranger2", "rf2", "svm2", "gbm2")
 
   if (sdm_method %in% methods_to_copy) {
     sdm_path <- system.file("methods/sdm", package = "sdm")

inst/svm2.R

@@ -20,7 +20,7 @@
 #   * Grid is intentionally small to remain fast and robust models
 
 methodInfo <- list(
-  name = c("svm3", "SVM3", "svm_e1071_3"),
+  name = c("svm2", "SVM2", "svm_e1071"),
   packages = "e1071",
   modelTypes = c("pa", "pb", "ab", "n"),
   fitParams = list(