11.4.2. astroML.datasets.fetch_sdss_spectrum¶
-
astroML.datasets.fetch_sdss_spectrum(plate, mjd, fiber, data_home=None, download_if_missing=True, cache_to_disk=True)[source]¶ Fetch an SDSS spectrum from the Data Archive Server
- Parameters
- plate: integer
plate number of desired spectrum
- mjd: integer
mean julian date of desired spectrum
- fiber: integer
fiber number of desired spectrum
- Returns
- spec: :class:`astroML.tools.SDSSfits` object
An object wrapper for the fits data
- Other Parameters
- data_home: string (optional)
directory in which to cache downloaded fits files. If not specified, it will be set to ~/astroML_data.
- download_if_missing: boolean (default = True)
download the fits file if it is not cached locally.
- cache_to_disk: boolean (default = True)
cache downloaded file to data_home.