When the metadata.tsv file has all ct fields set to NA, the plot_qc_sequencing.R script errors out. Added a method to check the metadata file and determine whether the ct field has all NAs. If it is NA, do not add the plot to the snakemake dependency and skip creating the plot.
When the metadata.tsv file has all ct fields set to NA, the plot_qc_sequencing.R script errors out. Added a method to check the metadata file and determine whether the ct field has all NAs. If it is NA, do not add the plot to the snakemake dependency and skip creating the plot.