I remembered the issue (I mentioned earlier).
The R code will not work for mammals, ( /Users/cwyatt/Desktop/excon/bin/R_biomart.R ensembl mmulatta_gene_ensembl).
The main Ensembl database should contain the mart for mammals. For standard Ensembl, you should use the useEnsembl() function (not useEnsemblGenomes(), which is for non-vertebrate species like plants, bacteria, etc.).
ensembl <- useEnsembl(biomart = "ensembl", dataset = "hsapiens_gene_ensembl")
I remembered the issue (I mentioned earlier).
The R code will not work for mammals, ( /Users/cwyatt/Desktop/excon/bin/R_biomart.R ensembl mmulatta_gene_ensembl).
The main Ensembl database should contain the mart for mammals. For standard Ensembl, you should use the useEnsembl() function (not useEnsemblGenomes(), which is for non-vertebrate species like plants, bacteria, etc.).
ensembl <- useEnsembl(biomart = "ensembl", dataset = "hsapiens_gene_ensembl")