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@dcherian Thanks a lot.

You should also check out xr-scipy which wraps a lot of scipy stuff. And also xrft for Fourier transforms

Any idea if Xarray will incorporate more Numpy/Scipy functions in the future.

Generally you'll need to use Dask functions on .data if you want it to be lazy. On Sun, Jan 20, 2019 at 9:56 PM Ahmed Shaaban notifications@github.com wrote:

Thanks ... I am wondering if I used Numpy/Scipy functions on Xarray.data, will such computation is performed under the umbrella of Dask (Lazy evaluation)?

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Thanks ... I am wondering if I used Numpy/Scipy functions on Xarray.data, will such computation is performed under the umbrella of Dask (Lazy evaluation)?

array_wrap is an old interface that a variety of NumPy functions use (in an apparently hard to predict ways). On Fri, Jan 18, 2019 at 10:07 PM Joe Hamman notifications@github.com wrote:

@ahmedshaaban1 https://github.com/ahmedshaaban1 - You may also want to checkout http://xarray.pydata.org/en/stable/computation.html#wrapping-custom-computation

@shoyer https://github.com/shoyer - can you expand on what you meant about removing the xarray.Variable.array_wrap method? xarray.DataArray also calls this method a few times so we'd have to think about how far to take this.

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@ahmedshaaban1 - You may also want to checkout http://xarray.pydata.org/en/stable/computation.html#wrapping-custom-computation

@shoyer - can you expand on what you meant about removing the xarray.Variable.__array_wrap__ method? xarray.DataArray also calls this method a few times so we'd have to think about how far to take this.

In general you need to apply NumPy/scipy functions on the .data attribute of an xarray object, and recreate the labels. On Thu, Jan 17, 2019 at 10:54 PM Ahmed Shaaban notifications@github.com wrote:

Thanks a lot for your answer. I am a novice to Xarray, and I am a heavy user of NumPy. Numpy FFT function works fine with Xarray variables, yet it returns NumPy array. NumPy reshape function, as mentioned above, does not work with Xarray variable. I am not yet able to understand how to use the power of Xarray and at the same time be able to use the math/statistics function of Numpy/SciPy.

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Thanks a lot for your answer. I am a novice to Xarray, and I am a heavy user of NumPy. Numpy FFT function works fine with Xarray variables, yet it returns NumPy array. NumPy reshape function, as mentioned above, does not work with Xarray variable. I am not yet able to get the big picture of how to use the power of Xarray and at the same time be able to use the math/statistics function of Numpy/SciPy.

We should probably remove the xarray.Variable.__array_wrap__ method

@ahmedshaaban1 - what is the expected output you'd like to get from a reshape call. You may already know that xarray doesn't have a reshape method. Usually, stack/unstack are used to "reshape" DataArrays.