§ IR-e¥ãóZ—ddlmZddlmZddlmZddlmZmZdgZGd„d¦«ZdS)é)Úlog)ÚBaseHighLevelWCS)ÚBaseLowLevelWCS)ÚHighLevelWCSWrapperÚSlicedLowLevelWCSÚNDSlicingMixincó6—eZdZdZd„Zd„Zd„Zd„Zd„Zd„Z dS) raÒMixin to provide slicing on objects using the `NDData` interface. The ``data``, ``mask``, ``uncertainty`` and ``wcs`` will be sliced, if set and sliceable. The ``unit`` and ``meta`` will be untouched. The return will be a reference and not a copy, if possible. Examples -------- Using this Mixin with `~astropy.nddata.NDData`: >>> from astropy.nddata import NDData, NDSlicingMixin >>> class NDDataSliceable(NDSlicingMixin, NDData): ... pass Slicing an instance containing data:: >>> nd = NDDataSliceable([1,2,3,4,5]) >>> nd[1:3] NDDataSliceable([2, 3]) Also the other attributes are sliced for example the ``mask``:: >>> import numpy as np >>> mask = np.array([True, False, True, True, False]) >>> nd2 = NDDataSliceable(nd, mask=mask) >>> nd2slc = nd2[1:3] >>> nd2slc[nd2slc.mask] NDDataSliceable([3]) Be aware that changing values of the sliced instance will change the values of the original:: >>> nd3 = nd2[1:3] >>> nd3.data[0] = 100 >>> nd2 NDDataSliceable([ 1, 100, 3, 4, 5]) See Also -------- NDDataRef NDDataArray có„—|jjdkrtd¦«‚| |¦«}|jdi|¤ŽS)N©zscalars cannot be sliced.)ÚdataÚshapeÚ TypeErrorÚ_sliceÚ __class__©ÚselfÚitemÚkwargss ú?lib/python3.11/site-packages/astropy/nddata/mixins/ndslicing.pyÚ __getitem__zNDSlicingMixin.__getitem__:sK€à Œ9Œ?˜bÒ Ð ÝÐ7Ñ8Ô8Ð 8ð—’˜TÑ"Ô"ˆØˆtŒ~Ð'Ð' Ð'Ð'Ð'ócóâ—i}|j||d<| |¦«|d<| |¦«|d<| |¦«|d<|j|d<|j|d<|S)aÍCollects the sliced attributes and passes them back as `dict`. It passes uncertainty, mask and wcs to their appropriate ``_slice_*`` method, while ``meta`` and ``unit`` are simply taken from the original. The data is assumed to be sliceable and is sliced directly. When possible the return should *not* be a copy of the data but a reference. Parameters ---------- item : slice The slice passed to ``__getitem__``. Returns ------- dict : Containing all the attributes after slicing - ready to use them to create ``self.__class__.__init__(**kwargs)`` in ``__getitem__``. r Ú uncertaintyÚmaskÚwcsÚunitÚmeta)r Ú_slice_uncertaintyÚ _slice_maskÚ _slice_wcsrrrs rrzNDSlicingMixin._sliceCsw€ð,ˆØœ 4œˆˆv‰à $× 7Ò 7¸Ñ =Ô =ˆˆ}ÑØ×)Ò)¨$Ñ/Ô/ˆˆv‰ØŸš¨Ñ-Ô-ˆˆu‰ àœˆˆv‰Øœˆˆv‰Øˆ rcó”—|j€dS |j|S#ttf$rtjd¦«YnwxYw|jS)Nzuncertainty cannot be sliced.)rrÚKeyErrorrÚinfo©rrs rrz!NDSlicingMixin._slice_uncertaintydsg€Ø Ô Ð #Ø4ð 6ØÔ# DÔ)Ð )øÝ8Ð$ð 6ð 6ð 6õ ŒHÐ4Ñ 5Ô 5Ð 5Ð 5Ð 5ð  6øøøð ÔÐó‹ ˜%A¿Acó”—|j€dS |j|S#ttf$rtjd¦«YnwxYw|jS)Nzmask cannot be sliced.)rrr"rr#r$s rrzNDSlicingMixin._slice_maskps_€Ø Œ9Ð Ø4ð /Ø”9˜T”?Ð "øÝ8Ð$ð /ð /ð /Ý ŒHÐ-Ñ .Ô .Ð .Ð .Ð .ð /øøøàŒyÐr%cóÄ—|j€dS t|jj|¦«}t|¦«S#t$r!}| ||¦«Yd}~dSd}~wwxYw)N)rrÚ low_level_wcsrÚ ExceptionÚ_handle_wcs_slicing_error)rrÚllwcsÚerrs rr zNDSlicingMixin._slice_wcsys}€Ø Œ8Ð Ø4ð 6Ý% d¤hÔ&<¸dÑCÔCˆEÝ& uÑ-Ô-Ð -øÝð 6ð 6ð 6Ø × *Ò *¨3°Ñ 5Ô 5Ð 5Ð 5Ð 5Ð 5Ð 5Ð 5Ð 5øøøøð 6øøøs‹(4´ A¾AÁAcó*—td|›d¦«|‚)Nz'Slicing the WCS object with the slice 'z' failed, if you want to slice the NDData object without the WCS, you can remove by setting `NDData.wcs = None` and then retry.)Ú ValueError)rr,rs rr*z(NDSlicingMixin._handle_wcs_slicing_error„s3€Ýð H°dð Hð Hð Hñ ô ðð  rN) Ú__name__Ú __module__Ú __qualname__Ú__doc__rrrrr r*r rrrr sz€€€€€ð*ð*ðX(ð(ð(ððððB  ð  ð  ðððð6ð6ð6ðððððrN) ÚastropyrÚastropy.wcs.wcsapirrrrÚ__all__rr rrúr6s™ðð ÐÐÐÐÐØ/Ð/Ð/Ð/Ð/Ð/Ø.Ð.Ð.Ð.Ð.Ð.ØEÐEÐEÐEÐEÐEÐEÐEà Ð €ð|ð|ð|ð|ð|ñ|ô|ð|ð|ð|r