Hello,

I am trying to group by class and subgroup by family. I have assigned taxonomy with silva 138. I type the code below (where class_a and class_b are the taxonomic names).

color_object <- create_color_dfs(mdf_prep, group_level = "Class", selected_groups = c( 'class_a', 'class_b'), subgroup_level = "Family", cvd = TRUE)

When I do that I get the error:

Error in seq_along(x)[j] : only 0's may be mixed with negative subscripts

I'm unsure how to fix this. Any help is greatly appreciated!

Thank you so much!