Source code for lsst.sims.maf.stackers.sdssStackers

from builtins import zip
import numpy as np
from .baseStacker import BaseStacker
from .ditherStackers import wrapRA

__all__ = ['SdssRADecStacker']

[docs]class SdssRADecStacker(BaseStacker): """convert the p1,p2,p3... columns to radians and wrap them """ colsAdded = ['RA1', 'Dec1', 'RA2', 'Dec2', 'RA3', 'Dec3', 'RA4', 'Dec4'] def __init__(self, pcols = ['p1','p2','p3','p4','p5','p6','p7','p8']): """ The p1,p2 columns represent the corners of chips. Could generalize this a bit.""" self.units = ['rad']*8 self.colsReq = pcols def _run(self, simData, cols_present=False): if cols_present: # Assume this is unusual enough to run that you really mean it. pass for pcol, newcol in zip(self.colsReq, self.colsAdded): if newcol[0:2] == 'RA': simData[newcol] = wrapRA(np.radians(simData[pcol])) else: simData[newcol] = np.radians(simData[pcol]) return simData