Hello, I am trying to generate the heatmap using hclust2 but ran into an error
ValueError: The number of observations cannot be determined on an empty distance matrix.
When I looked back at my file of merged_abundance_table_species.txt, indeed, it only has Body Site header and the bacterial strains. There were no numbers/digits next to the strains.
How do I solve this issue with the merged abundance table species?
Thanks in advance.