watex.utils.shape#

watex.utils.shape(cz, s=Ellipsis, p=Ellipsis)[source]#

Compute the shape of anomaly.

The shape parameter is mostly used in the basement medium to depict the better conductive zone for the drilling location. According to Sombo et al. (2011; 2012), various shapes of anomalies can be described such as:

“V”, “U”, “W”, “M”, “K”, “C”, and “H”

The shape consists to feed the algorithm with the Electrical Resistivity Profiling resistivity values by specifying the station \((S_{VES})\). Indeed, mostly, \(S_{VES}\) is the station with a very low resistivity value expected to be the drilling location.

Parameters

  • cz – array-like - Conductive zone resistivity values

  • s – int, str - Station position index or name.

  • p – Array-like - Should be the position of the conductive zone.

Note

If s is given, p should be provided. If p is missing an error will raises.

Returns

str - the shape of anomaly.

Example
>>> import numpy as np
>>> rang = np.random.RandomState(42)
>>> from watex.utils.exmath import shape
>>> test_array1 = np.arange(10)
>>> shape (test_array1)
...  'C'
>>> test_array2 = rang.randn (7)
>>> shape(test_array2)
... 'H'
>>> test_array3 = np.power(10, test_array2 , dtype =np.float32)
>>> shape (test_array3)
... 'H'   # does not change whatever the resistivity values.

References

Sombo, P. A., Williams, F., Loukou, K. N., & Kouassi, E. G. (2011).

Contribution de la Prospection Électrique à L’identification et à la Caractérisation des Aquifères de Socle du Département de Sikensi (Sud de la Côte d’Ivoire). European Journal of Scientific Research, 64(2), 206–219.

Sombo, P. A. (2012). Application des methodes de resistivites electriques

dans la determination et la caracterisation des aquiferes de socle en Cote d’Ivoire. Cas des departements de Sikensi et de Tiassale (Sud de la Cote d’Ivoire). Universite Felix Houphouet Boigny.