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SHTOOLS: Version 3.4

Mark Wieczorek; MMesch; Elliott Sales de Andrade; Ilya Oshchepkov

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    <subfield code="a">Ilya Oshchepkov</subfield>
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    <subfield code="a">&lt;p&gt;This release adds missing functionality to the SHGrids, SHCoeffs, and SHWindow classes, and adds support for PyPI.&lt;/p&gt;

&lt;li&gt;Add pyshtools to PyPI repository. Can now be installed using pip install pyshtools.&lt;/li&gt;
&lt;li&gt;Add new function SHBiasKMask which is the arbitrary window counterpart to the spherical cap window SHBiasK.&lt;/li&gt;
&lt;li&gt;Add get_biasedpowerspectrum() method to SHWindows for arbitrary windows.&lt;/li&gt;
&lt;li&gt;Add copy() method to all classes, which returns a deep copy of the instance.&lt;/li&gt;
&lt;li&gt;Add __sub__, __add__, __rsub__, __radd__, __mul__, __div__, __truediv__, and __pow__ operators for two sets of coefficient or grid classes, or one coefficient or grid class and a scalar.&lt;/li&gt;
&lt;li&gt;Add nwinrot option when rotating spherical cap windows in SHWindow that will rotate only the first nwinrot windows.&lt;/li&gt;
&lt;li&gt;Add degrees option to get_lats() and get_lons() methods.&lt;/li&gt;
&lt;li&gt;Add the constructor from_file() to initialize an SHGrid with a numpy formatted data file. Add option to read coeffs and grids from a numpy formatted binary file. Addtofile() methods to output raw grid and coefficient data as either text or binary formatted files.&lt;/li&gt;
&lt;li&gt;Update Intro 1 notebook and add example to Intro notebook 2 showing how to use arbitrary localization windows.&lt;/li&gt;
&lt;li&gt;Convert notebooks to html and add links to web documentation.&lt;/li&gt;
&lt;li&gt;Add option fixed_power to SHCoeffs.from_random() method to generate random coefficients that fit exactly the expected power spectrum.&lt;/li&gt;
&lt;li&gt;Add Earth topography coefficients referenced to mean sea level to the example files, expanded to degree 300: srtmp300.msl.&lt;/li&gt;
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