How can I use a 3D grid for a spherical coordinate system? The manual only mentions how to implement in a Cartesian coordinate system.
This example demonstrates how to calculate the Christoffel symbols of the second kind for the spherical coordinate system using SymPy's diffgeom module. The result is a 3-dimensional array containing ...
Abstract: This paper presents the theoretical and practical foundation of a spherical lower dimensional representation for daily medium voltage load profiles, based on principal component analysis.
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