def _validate_minimum_fraction(min_frac):
"""
Sanity check min fraction
"""
if min_frac is None:
raise cf.ConfigException('Minimum fraction is None')
if min_frac < 0.0 or min_frac > 1.0:
raise ValueError("Minimum fraction setting must be >= 0.0 and <= 1.0 ")
def _validate_search_win(refnx, refny, chipsize, head):
"""
Sanity check X|Y steps
"""
if refnx is None:
raise cf.ConfigException('refnx is None')
max_width = (head.ncols - (chipsize - 1))
if refnx < 1 or refnx > max_width:
msg = "Invalid refnx setting, must be > 0 and <= %s"
raise ValueError(msg % max_width)
if refny is None:
raise cf.ConfigException('refny is None')
max_rows = (head.nrows - (chipsize - 1))
if refny < 1 or refny > max_rows:
msg = "Invalid refny setting, must be > 0 and <= %s"
raise ValueError(msg % max_rows)
def _validate_chipsize(chipsize, head):
"""
Sanity check min chipsize
"""
if chipsize is None:
raise cf.ConfigException('Chipsize is None')
if chipsize < 3 or chipsize > head.ncols or (chipsize % 2 == 0):
msg = "Chipsize setting must be >=3 and at least <= grid width"
raise ValueError(msg)
log.debug('Chipsize validation successful')