BUG: fix divide by zero in quartic_restricted when y is constant GH#234#235
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Omesh37 wants to merge 2 commits into
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BUG: fix divide by zero in quartic_restricted when y is constant GH#234#235Omesh37 wants to merge 2 commits into
Omesh37 wants to merge 2 commits into
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Description
pvanalytics/util/_fit.pyraisedRuntimeWarning: divide by zero encountered in scalar dividewhenycontains constant values.In
quartic_restricted, the R² denominatornp.sum((y - np.mean(y))**2)evaluates to zero when all values inyare identical. This caused aRuntimeWarningin:test_orientation.py::test_ghi_not_trackingtest_orientation.py::test_power_tracking_perturbedFix: Check if
ss_tot == 0before dividing. If so, return0.0since R² is undefined for constant data (no variation to explain)._fit.quartic_restrictedwhen y is constant #234