Data

class jetset.data_loader.Data(data_table=None, n_rows=None, meta_data=None, import_dictionary=None, cosmo=None)

Bases: object

Structured observational data table with metadata validation.

Notes

Normalizes expected columns, validates required metadata fields, and converts incoming units/scales into the internal linear observer-frame representation used by JetSeT.

Attributes Summary

metadata	Return table metadata dictionary.
table	Return the internal Astropy table.

Methods Summary

from_asdc(asdc_sed_file, obj_name, z, ...)	Create Data from an ASDC-style text SED file.
from_file(data_table[, format, ...])	Create Data from a file.
save_file(name[, format])	Write the internal table to disk.
set_field(field, value[, unit])	Assign a column and optionally set/override its unit.
set_meta_data(m, v)	Set and validate a metadata field.

Attributes Documentation

metadata

Return table metadata dictionary.

table

Return the internal Astropy table.

Methods Documentation

classmethod from_asdc(asdc_sed_file, obj_name, z, restframe, data_scale)

Create Data from an ASDC-style text SED file.

Parameters:

• asdc_sed_file (str) – Input ASDC SED file path.

• obj_name (str) – Source name stored in metadata.

• z (float) – Source redshift.

• restframe ({"obs", "src"}) – Frame declaration of the imported data.

• data_scale ({"lin-lin", "log-log"}) – Scale declaration of the imported data.

Returns:

New data container built from the ASDC content.

Return type:

Data

classmethod from_file(data_table, format='ascii.ecsv', import_dictionary=None, guess=None)

Create Data from a file.

Parameters:

• data_table (str) – File path to read.

• format (str, optional) – Astropy table format passed to Table.read.

• import_dictionary (dict, optional) – Optional column renaming map.

• guess (bool, optional) – Forwarded to Table.read.

Returns:

New normalized data container.

Return type:

Data

save_file(name, format='ascii.ecsv')

Write the internal table to disk.

Parameters:

• name (str) – Output file path.

• format (str, optional) – Astropy output format.

set_field(field, value, unit=None)

Assign a column and optionally set/override its unit.

Parameters:

• field (str) – Column name.

• value (array-like) – Values to assign to the column.

• unit (astropy.units.Unit or str, optional) – Unit to set after assignment. If omitted, preserves the existing unit when available.

set_meta_data(m, v)

Set and validate a metadata field.

Parameters:

• m (str) – Metadata key.

• v (object) – Metadata value.