lsst.pipe.tasks.repositoryIterator Namespace Reference

Classes
class	SourceData
class	RepositoryInfo
class	RepositoryIterator

Functions
def	_getDTypeList

Variables
int	STR_PADDING = 5

Function Documentation

def lsst.pipe.tasks.repositoryIterator._getDTypeList (   keyTuple,   valTuple  )

private

Construct a numpy dtype for a data ID or repository ID

@param[in] keyTuple: ID key names, in order
@param[in] valTuple: a value tuple
@return numpy dtype as a list

@warning: this guesses at string length (STR_PADDING + length of string in valTuple);
longer strings will be truncated when inserted into numpy structured arrays

Definition at line 34 of file repositoryIterator.py.

def _getDTypeList(keyTuple, valTuple):
    """Construct a numpy dtype for a data ID or repository ID
    
    @param[in] keyTuple: ID key names, in order
    @param[in] valTuple: a value tuple
    @return numpy dtype as a list
    
    @warning: this guesses at string length (STR_PADDING + length of string in valTuple);
    longer strings will be truncated when inserted into numpy structured arrays
    """
    typeList = []
    for name, val in itertools.izip(keyTuple, valTuple):
        if isinstance(val, str):
            predLen = len(val) + STR_PADDING
            typeList.append((name, str, predLen))
        else:
            typeList.append((name, numpy.array([val]).dtype))
    return typeList