Metadata Parser¶

Reads metadata the from the input data directory.

plantcv.parallel.metadata_parser(data_dir, meta_fields, valid_meta, meta_filters, date_format, start_date, end_date, error_log, delimiter="_", file_type="png", coprocess=None)

returns jobcount (number of processing jobs), and meta (dictionary of image metadata, one entry per image to be processed)

• Parameters:
  • data_dir - Input data directory
  • meta_fields - Dictionary of image filename metadata fields and index positions
  • valid_meta - Dictionary of valid metadata keys
  • meta_filters - Dictionary of metadata filters (key-value pairs)
  • date_format - Date format code for timestamp metadata to use with strptime
  • start_date - Analysis start date in Unix time
  • end_date - Analysis end date in Unix time
  • error_log - Error log filehandle object
  • delimiter - Filename metadata delimiter string or regular expression pattern (default: "_")
  • file_type - Image filetype extension (default: "png")
  • coprocess - Coprocess the specified imgtype with the imgtype specified in meta_filters (default: None)
• Context:
  • This is one of the first steps built into the PlantCV Workflow Parallelization feature. It reads metadata the from the input data directory and uses the outputs in the job builder step.

Source Code: Here