rebin¶
-
ccdproc.
rebin
(ccd, newshape)[source]¶ Rebin an array to have a new shape.
Parameters: Data to rebin
newshape : tuple
Tuple containing the new shape for the array
Returns: An array with the new shape. It will have the same type as the input object.
Raises: TypeError
A type error is raised if data is not an
numpy.ndarray
orCCDData
ValueError
A value error is raised if the dimenisions of new shape is not equal to data
Notes
This is based on the scipy cookbook for rebinning: http://wiki.scipy.org/Cookbook/Rebinning
If rebinning a CCDData object to a smaller shape, the masking and uncertainty are not handled correctly.
Examples
Given an array that is 100x100,
>>> import numpy as np >>> from astropy import units as u >>> arr1 = CCDData(np.ones([10, 10]), unit=u.adu)
the syntax for rebinning an array to a shape of (20,20) is
>>> rebinned = rebin(arr1, (20,20))