lsst.meas.extensions.astrometryNet.multiindex Namespace Reference

Classes
class	AstrometryNetCatalog
class	MultiIndexCache

Functions
def	getIndexPath (fn)
	Get the path to the specified astrometry.net index file. More...
def	getConfigFromEnvironment ()
def	generateCache (andConfig=None)

Function Documentation

generateCache()

def lsst.meas.extensions.astrometryNet.multiindex.generateCache

(

andConfig = None

)

Generate a cache file

Definition at line 268 of file multiindex.py.

def generateCache(andConfig=None):
    """Generate a cache file"""
    if andConfig is None:
        andConfig = getConfigFromEnvironment()
    catalog = AstrometryNetCatalog(andConfig)
    try:
        for index in catalog:
            index.reload()
        catalog.writeCache()
    finally:
        for index in catalog:
            index.unload()

getConfigFromEnvironment()

def lsst.meas.extensions.astrometryNet.multiindex.getConfigFromEnvironment

(

)

Find the config file from the environment

The andConfig.py file is in the astrometry_net_data directory.

Definition at line 40 of file multiindex.py.

def getConfigFromEnvironment():
    """Find the config file from the environment

    The andConfig.py file is in the astrometry_net_data directory.
    """
    try:
        anDir = lsst.utils.getPackageDir('astrometry_net_data')
    except Exception:
        anDir = os.getcwd()
        andConfigPath = "andConfig.py"
        if not os.path.exists(andConfigPath):
            raise RuntimeError("Unable to find andConfig.py in the current directory.  "
                               "Did you forget to setup astrometry_net_data?")
    else:
        andConfigPath = os.path.join(anDir, "andConfig.py")
        if not os.path.exists(andConfigPath):
            raise RuntimeError("Unable to find andConfig.py in astrometry_net_data directory %s" % (anDir,))

    andConfig = AstrometryNetDataConfig()
    andConfig.load(andConfigPath)
    return andConfig

getIndexPath()

def lsst.meas.extensions.astrometryNet.multiindex.getIndexPath

(

fn

)

Get the path to the specified astrometry.net index file.

No effort is made to confirm that the file exists, so it may be used to locate the path to a non-existent file (e.g., to write).

Parameters

[in]

fn

path to index file; if relative, then relative to astrometry_net_data if that product is setup, else relative to the current working directory

Returns

the absolute path to the index file

Definition at line 19 of file multiindex.py.

def getIndexPath(fn):
    """!Get the path to the specified astrometry.net index file

    No effort is made to confirm that the file exists, so it may be used to
    locate the path to a non-existent file (e.g., to write).

    @param[in] fn  path to index file; if relative, then relative to
        astrometry_net_data if that product is setup, else relative to the
        current working directory
    @return the absolute path to the index file
    """
    if os.path.isabs(fn):
        return fn
    try:
        andir = lsst.utils.getPackageDir('astrometry_net_data')
    except Exception:
        # Relative to cwd
        return os.path.abspath(fn)
    return os.path.join(andir, fn)

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