membership_map.Rdfunction that maps channel membership to genotype ID
membership_map(experimental_design, graph_output)design matrix rownames should be microfluidics channels, colnames should be genotypes
the output of construct_genotype_cluster_graph given as x$genotype_cluster_graph
a matrix of channel memberships for each cluster
# \donttest{
membership_map()
#> Error in membership_map(): argument "graph_output" is missing, with no default
# }