lsst.pipe.tasks.selectImages Namespace Reference

Classes
class	DatabaseSelectImagesConfig
class	BaseExposureInfo
class	BaseSelectImagesTask
class	SelectStruct
class	WcsSelectImagesTask

Functions
def	_extractKeyValue

Variables
list	__all__ = ["BaseSelectImagesTask", "BaseExposureInfo", "WcsSelectImagesTask", "DatabaseSelectImagesConfig"]

Function Documentation

def lsst.pipe.tasks.selectImages._extractKeyValue (   dataList,   keys = None  )

private

Extract the keys and values from a list of dataIds

The input dataList is a list of objects that have 'dataId' members.
This allows it to be used for both a list of data references and a
list of ExposureInfo

Definition at line 138 of file selectImages.py.

def _extractKeyValue(dataList, keys=None):
    """Extract the keys and values from a list of dataIds

    The input dataList is a list of objects that have 'dataId' members.
    This allows it to be used for both a list of data references and a
    list of ExposureInfo
    """
    assert len(dataList) > 0
    if keys is None:
        keys = sorted(dataList[0].dataId.keys())
    keySet = set(keys)
    values = list()
    for data in dataList:
        thisKeys = set(data.dataId.keys())
        if thisKeys != keySet:
            raise RuntimeError("DataId keys inconsistent: %s vs %s" % (keySet, thisKeys))
        values.append(tuple(data.dataId[k] for k in keys))
    return keys, values