# Metadata
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### MetadataReader
``` python
def MetadataReader(
obsid
):
```
*A class to read and manage metadata for a given observation ID
(obsid).* Parameters ———- obsid : str The observation ID for which
metadata is to be read and managed. Attributes ———- obsid : str The
observation ID. prodid : ProductPathfinder An instance of
ProductPathfinder initialized with the observation ID and “\_COLOR”
suffix. labelpath : pathlib.Path The local path to the label file. label
: labels.HiRISE_Label An instance of HiRISE_Label initialized with the
label path. campt_out_path : pathlib.Path The path to the campt output
CSV file. campt_out_df : pandas.DataFrame A DataFrame containing the
contents of the campt output CSV file. Methods ——- read_edr_index()
Reads the EDR index for the HiRISE instrument. download_label()
Downloads the label file if it does not exist locally.
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### get_north_azimuths_from_SPICE
``` python
def get_north_azimuths_from_SPICE(
obsids
):
```
*Calculate the North Azimuth for a list of observation IDs using SPICE
metadata.* Parameters ———- obsids : list of str List of observation IDs
for which to calculate the North Azimuth direction. Returns ——-
pandas.DataFrame DataFrame containing the observation IDs and their
corresponding North Azimuth values. The DataFrame has two columns:
‘OBSERVATION_ID’ and ‘north_azimuth’.