lsst.meas.astrom.multiindex Namespace Reference

Classes
class	MultiIndexCache
class	AstrometryNetCatalog

Functions
def	getIndexPath
	Get the path to the specified astrometry.net index file. More...
def	getConfigFromEnvironment
def	generateCache

Variables
list	__all__ = ["getIndexPath", "getConfigFromEnvironment", "AstrometryNetCatalog", "generateCache"]

Function Documentation

def lsst.meas.astrom.multiindex.generateCache

(

andConfig = None

)

Generate a cache file

Definition at line 255 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()

def lsst.meas.astrom.multiindex.getConfigFromEnvironment

(

)

Find the config file from the environment

The andConfig.py file is in the astrometry_net_data directory.

Definition at line 31 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:
        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