def _load_precomp(dr=None,fiber='combo',sparse=True):
"""Load a precomputed LSF"""
if dr is None: dr= appath._default_dr()
fileDir= os.path.dirname(appath.apLSFPath('a',dr=dr))
filePath= os.path.join(fileDir,'apogee-lsf-dr%s-%s.fits' % (dr,fiber))
# Download the file if necessary
if not os.path.exists(filePath):
dlink= \
filePath.replace(fileDir,'https://zenodo.org/record/16147/files')
_download_file(dlink,filePath,dr)
x= numpy.linspace(-7.,7.,43)
elsf= fitsio.read(filePath)
if sparse:
return (x,sparsify(elsf))
else:
return (x,elsf)
def _load_precomp(dr=None,fiber='combo',sparse=True):
"""Load a precomputed LSF"""
if dr is None: dr= appath._default_dr()
if dr is 'current':
warnings.warn("Preloaded LSFs for current DR not yet available, falling back on DR12 files")
dr= '12'
fileDir= os.path.dirname(appath.apLSFPath('a',dr=dr))
filePath= os.path.join(fileDir,'apogee-lsf-dr%s-%s.fits' % (dr,fiber))
# Download the file if necessary
if not os.path.exists(filePath):
dlink= \
filePath.replace(fileDir,'https://zenodo.org/record/16147/files')
_download_file(dlink,filePath,dr)
x= numpy.linspace(-7.,7.,43)
elsf= fitsio.read(filePath)
if sparse:
return (x,sparsify(elsf))
else:
return (x,elsf)
def apLSF(chip, ext=0, dr=None):
"""
NAME:
apLSF
PURPOSE:
open an apLSF file
INPUT:
chip - chip 'a', 'b', or 'c'
ext= (0) extension to read
dr= return the path corresponding to this data release
OUTPUT:
contents of HDU ext
HISTORY:
2015-03-12 - Written - Bovy (IAS)
"""
filePath = path.apLSFPath(chip, dr=dr)
if not os.path.exists(filePath):
download.apLSF(chip, dr=dr)
data = fitsio.read(filePath, ext)
return data
def apLSF(chip,ext=0,dr=None):
"""
NAME:
apLSF
PURPOSE:
open an apLSF file
INPUT:
chip - chip 'a', 'b', or 'c'
ext= (0) extension to read
dr= return the path corresponding to this data release
OUTPUT:
contents of HDU ext
HISTORY:
2015-03-12 - Written - Bovy (IAS)
"""
filePath= path.apLSFPath(chip,dr=dr)
if not os.path.exists(filePath):
download.apLSF(chip,dr=dr)
data= fitsio.read(filePath,ext)
return data
def apLSF(chip, dr=None):
"""
NAME:
apLSF
PURPOSE:
download an apLSF file
INPUT:
chip - chip 'a', 'b', or 'c'
dr= return the path corresponding to this data release
OUTPUT:
(none; just downloads)
HISTORY:
2015-03-12 - Written - Bovy (IAS)
"""
if dr is None: dr = path._default_dr()
# First make sure the file doesn't exist
filePath = path.apLSFPath(chip, dr=dr)
if os.path.exists(filePath): return None
# Create the file path
downloadPath = filePath.replace(
os.path.join(path._APOGEE_DATA, _dr_string(dr)), _base_url(dr=dr))
_download_file(downloadPath, filePath, dr, verbose=True)
return None
def apLSF(chip,dr=None):
"""
NAME:
apLSF
PURPOSE:
download an apLSF file
INPUT:
chip - chip 'a', 'b', or 'c'
dr= return the path corresponding to this data release
OUTPUT:
(none; just downloads)
HISTORY:
2015-03-12 - Written - Bovy (IAS)
"""
if dr is None: dr= path._default_dr()
# First make sure the file doesn't exist
filePath= path.apLSFPath(chip,dr=dr)
if os.path.exists(filePath): return None
# Create the file path
downloadPath= filePath.replace(os.path.join(path._APOGEE_DATA,
_dr_string(dr)),
_base_url(dr=dr))
_download_file(downloadPath,filePath,dr,verbose=True)
return None
