pyFTS.data package¶
Submodules¶
pyFTS.data.AirPassengers module¶
pyFTS.data.Enrollments module¶
pyFTS.data.INMET module¶
INMET - Instituto Nacional Meteorologia / Brasil
Belo Horizonte station, from 2000-01-01 to 31/12/2012
Source: http://www.inmet.gov.br
pyFTS.data.NASDAQ module¶
pyFTS.data.SONDA module¶
SONDA - Sistema de Organização Nacional de Dados Ambientais, from INPE - Instituto Nacional de Pesquisas Espaciais, Brasil.
Brasilia station
Source: http://sonda.ccst.inpe.br/
pyFTS.data.SP500 module¶
pyFTS.data.TAIEX module¶
pyFTS.data.artificial module¶
Facilities to generate synthetic stochastic processes
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pyFTS.data.artificial.generate_gaussian_linear(mu_ini, sigma_ini, mu_inc, sigma_inc, it=100, num=10, vmin=None, vmax=None)[source]¶ Generate data sampled from Gaussian distribution, with constant or linear changing parameters
Parameters: - mu_ini – Initial mean
- sigma_ini – Initial variance
- mu_inc – Mean increment after ‘num’ samples
- sigma_inc – Variance increment after ‘num’ samples
- it – Number of iterations
- num – Number of samples generated on each iteration
- vmin – Lower bound value of generated data
- vmax – Upper bound value of generated data
Returns: A list of it*num float values
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pyFTS.data.artificial.generate_uniform_linear(min_ini, max_ini, min_inc, max_inc, it=100, num=10, vmin=None, vmax=None)[source]¶ Generate data sampled from Uniform distribution, with constant or linear changing bounds
Parameters: - mu_ini – Initial mean
- sigma_ini – Initial variance
- mu_inc – Mean increment after ‘num’ samples
- sigma_inc – Variance increment after ‘num’ samples
- it – Number of iterations
- num – Number of samples generated on each iteration
- vmin – Lower bound value of generated data
- vmax – Upper bound value of generated data
Returns: A list of it*num float values
pyFTS.data.common module¶
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pyFTS.data.common.get_dataframe(filename, url, sep=';', compression='infer')[source]¶ This method check if filename already exists, read the file and return its data. If the file don’t already exists, it will be downloaded and decompressed.
Parameters: - filename – dataset local filename
- url – dataset internet URL
- sep – CSV field separator
- compression – type of compression
Returns: Pandas dataset
pyFTS.data.henon module¶
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pyFTS.data.henon.get_dataframe(a=1.4, b=0.3, initial_values=[1, 1], iterations=1000)[source]¶ - Hénon. “A two-dimensional mapping with a strange attractor”. Commun. Math. Phys. 50, 69-77 (1976)
dx/dt = a + by(t-1) - x(t-1)^2 dy/dt = x
Parameters: - a – Equation coefficient
- b – Equation coefficient
- initial_values – numpy array with the initial values of x and y. Default: [1, 1]
- iterations – number of iterations. Default: 1000
Returns: Panda dataframe with the x and y values
pyFTS.data.logistic_map module¶
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pyFTS.data.logistic_map.get_data(r=4, initial_value=0.3, iterations=100)[source]¶ May, Robert M. (1976). “Simple mathematical models with very complicated dynamics”. Nature. 261 (5560): 459–467. doi:10.1038/261459a0.
x(t) = r * x(t-1) * (1 - x(t -1) )
Parameters: - r – Equation coefficient
- initial_value – Initial value of x. Default: 0.3
- iterations – number of iterations. Default: 100
Returns:
pyFTS.data.lorentz module¶
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pyFTS.data.lorentz.get_data(var, a=10.0, b=28.0, c=2.6666666666666665, dt=0.01, initial_values=[0.1, 0, 0], iterations=1000)[source]¶
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pyFTS.data.lorentz.get_dataframe(a=10.0, b=28.0, c=2.6666666666666665, dt=0.01, initial_values=[0.1, 0, 0], iterations=1000)[source]¶ Lorenz, Edward Norton (1963). “Deterministic nonperiodic flow”. Journal of the Atmospheric Sciences. 20 (2): 130–141. https://doi.org/10.1175/1520-0469(1963)020<0130:DNF>2.0.CO;2
dx/dt = a(y -x) dy/dt = x(b - z) - y dz/dt = xy - cz
Parameters: - a – Equation coefficient. Default value: 10
- b – Equation coefficient. Default value: 28
- c – Equation coefficient. Default value: 8.0/3.0
- dt – Time differential for continuous time integration. Default value: 0.01
- initial_values – numpy array with the initial values of x,y and z. Default: [0.1, 0, 0]
- iterations – number of iterations. Default: 1000
Returns: Panda dataframe with the x, y and z values
pyFTS.data.mackey_glass module¶
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pyFTS.data.mackey_glass.get_data(b=0.1, c=0.2, tau=17, initial_values=array([0.5, 0.55882353, 0.61764706, 0.67647059, 0.73529412, 0.79411765, 0.85294118, 0.91176471, 0.97058824, 1.02941176, 1.08823529, 1.14705882, 1.20588235, 1.26470588, 1.32352941, 1.38235294, 1.44117647, 1.5 ]), iterations=1000)[source]¶ Mackey, M. C. and Glass, L. (1977). Oscillation and chaos in physiological control systems. Science, 197(4300):287-289.
dy/dt = -by(t)+ cy(t - tau) / 1+y(t-tau)^10
Parameters: - b – Equation coefficient
- c – Equation coefficient
- tau – Lag parameter, default: 17
- initial_values – numpy array with the initial values of y. Default: np.linspace(0.5,1.5,18)
- iterations – number of iterations. Default: 1000
Returns:
pyFTS.data.rossler module¶
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pyFTS.data.rossler.get_data(var, a=0.2, b=0.2, c=5.7, dt=0.01, initial_values=[0.001, 0.001, 0.001], iterations=5000)[source]¶
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pyFTS.data.rossler.get_dataframe(a=0.2, b=0.2, c=5.7, dt=0.01, initial_values=[0.001, 0.001, 0.001], iterations=5000)[source]¶ - Rössler, Phys. Lett. 57A, 397 (1976).
dx/dt = -z - y dy/dt = x + ay dz/dt = b + z( x - c )
Parameters: - a – Equation coefficient. Default value: 0.2
- b – Equation coefficient. Default value: 0.2
- c – Equation coefficient. Default value: 5.7
- dt – Time differential for continuous time integration. Default value: 0.01
- initial_values – numpy array with the initial values of x,y and z. Default: [0.001, 0.001, 0.001]
- iterations – number of iterations. Default: 5000
Returns: Panda dataframe with the x, y and z values
pyFTS.data.sunspots module¶
Module contents¶
Module for pyFTS standard datasets facilities