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https://github.com/triqs/dft_tools
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49 lines
1.2 KiB
ReStructuredText
49 lines
1.2 KiB
ReStructuredText
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.. module:: pytriqs.fit.fit
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Fitting data
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====================
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A simple example
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^^^^^^^^^^^^^^^^^^^^^
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Let us for example fit the Green function :
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.. plot:: reference/python/data_analysis/fit/fit_test.py
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:include-source:
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:scale: 70
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Note that `x_window` appears in the `x_data_view` method to clip the data on a given window
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and in the plot function, to clip the plot itself.
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A more complex example
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^^^^^^^^^^^^^^^^^^^^^^^^^^^
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To illustrate the use of python in a more complex situation,
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let us demonstrate a simple data analysis.
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This does not show any more TRIQS object, it is just a little exercise in python...
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Imagine that we have 10 Green function coming from a calculation in a hdf5 file.
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For the need of the demonstration, we will create them "manually" here, but it is just to make life easier.
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Reference
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^^^^^^^^^^^^^^^
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The Fit class is very simple and is provided for convenience, but the reader
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is encouraged to read it and adapt it (it is simply a call to scipy.leastsq).
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.. autoclass:: pytriqs.fit.Fit
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:members:
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Example of fitfunc::
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linear = lambda X, a,b : a * X + b, r"$%f x + %f$" , (1,1)
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quadratic = lambda X, a,b,c : (a * X + b)*Omega + c, r"$%f x^2 + %f x + %f$" , (0,1,1)
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