Helper function - plots specific performance surface or landscape. Data
must be in tabular format. Grid is color-coded according to trait value
or Z score.
     
    
    Usage
    plot_ggsurf(x, n1 = NULL)
 
     
    
    Arguments
- x
 
PO_List object, result of calc_lscp_Pareto. Alternatively, a dataframe or tibble containing trait values
 
- n1
 
Name of the trait variable or group landscape being plotted