watex.methods.ZC#

class watex.methods.ZC(window_size=5, c=2, **kws)[source]#

Impedance tensor multiple EDI correction class.

Applied filters in a collections of EDI objects.

New in version v0.2.0.

Parameters:

data (Path-like object or list of :class:watex.edi.Edi` or pycsamt.core.edi.Edi objects) – Collections of EDI-objects
window_size (int) – the length of the window. Must be greater than 1 and preferably an odd integer number. Default is 5
c (int, default=2) – A window-width expansion factor that must be input to the filter adaptation process to control the roll-off characteristics of the applied Hanning window. It is recommended to select c between 1 and 4 [1].

References

[1]

Torres-Verdin and Bostick, 1992, Principles of spatial surface electric field filtering in magnetotellurics: electromagnetic array profiling(EMAP), Geophysics, v57, p603-622.https://doi.org/10.1190/1.2400625

Examples

>>> import watex
>>> from watex.methods import ZC
>>> edi_sample = watex.fetch_data ('edis', samples =17, return_data =True)
>>> zo = ZC ().fit(edi_sample)
>>> zo.ediObjs_[0].Z.resistivity[:, 0, 1][:10] # for xy components
array([ 427.43690401,  524.87391142,  732.85475419, 1554.3189371 ,
       3078.87621649, 1550.62680093,  482.64709443,  605.3153687 ,
        499.49191936,  468.88692879])
>>> zss = zo.remove_static_shift(ss_fx =0.7 , ss_fy =0.85 )
>>> zss[0].resistivity[:, 0, 1][:10] # corrected xy components
array([ 278.96395263,  319.11187959,  366.43170231,  672.24446295,
       1344.20120487,  691.49270688,  260.25625996,  360.02452498,
        305.97381587,  273.46251961])