FloatingPointError: underflow encountered in exp

[nuhanb]

Hi, I encountered another issue where I am unable to 'calculate' under the interpolation tab. However, my data is loaded just fine and grid is showing, so I was wondering if it is a bug or issues with my initial point data.

I am using QGIS version 3.34.6-Prizren
SM Plugin version 1.4
Python version 3.12.3

Error message and code:

2024-07-12T10:29:57 WARNING Traceback (most recent call last):
File "C:\Users/Nur Hanisah/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\Smart_Map\krig\semivariogram.py", line 255, in Fit
[Nugget,Range,Sill], _ = curve_fit(func, lag, gamma,method='trf', check_finite = check, p0=self.init_vals ,bounds=(0, maxlim) )
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\PROGRA1\QGIS331.6\apps\Python312\Lib\site-packages\scipy\optimize_minpack_py.py", line 1011, in curve_fit
res = least_squares(func, p0, jac=jac, bounds=bounds, method=method,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\PROGRA1\QGIS331.6\apps\Python312\Lib\site-packages\scipy\optimize_lsq\least_squares.py", line 820, in least_squares
raise ValueError("x0 is infeasible.")
ValueError: x0 is infeasible.

         During handling of the above exception, another exception occurred:
         
         Traceback (most recent call last):
          File "C:\Users/Nur Hanisah/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\Smart_Map\krig\semivariogram.py", line 300, in Fit
          Nugget,Range,Sill = self.Gold_Rule(model)
          ^^^^^^^^^^^^^^^^^^^^^
          File "C:\Users/Nur Hanisah/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\Smart_Map\krig\semivariogram.py", line 427, in Gold_Rule
          Range=self.gold(ivar, xL, xU, model, Nugget, Range, Sill, maxIt, es)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          File "C:\Users/Nur Hanisah/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\Smart_Map\krig\semivariogram.py", line 381, in gold
          _,f2,_=self.Gamma(model,[x,x2,z])
          ^^^^^^^^^^^^^^^^^^^^^^^^^^
          File "C:\Users/Nur Hanisah/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\Smart_Map\krig\semivariogram.py", line 174, in Gamma
          gammaT=func(self.lag,parameter[0],parameter[1],parameter[2])
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          File "C:\Users/Nur Hanisah/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\Smart_Map\krig\variogram_models.py", line 61, in exponential_variogram_model
          return nugget+(psill-nugget)*(1-np.exp(-3.0*d/range_))
          ^^^^^^^^^^^^^^^^^^^^^
         FloatingPointError: underflow encountered in exp
         
         During handling of the above exception, another exception occurred:
         
         Traceback (most recent call last):
          File "C:\Users/Nur Hanisah/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\Smart_Map\Smart_Map.py", line 3659, in pushButton_VariogramaAjust_clicked
          self.calculate_variogram(initial_variogram = True, Nugget_Range_Sill = False)
          File "C:\Users/Nur Hanisah/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\Smart_Map\Smart_Map.py", line 3008, in calculate_variogram
          self.models = Semiv.Fit(use_models)
          ^^^^^^^^^^^^^^^^^^^^^
          File "C:\Users/Nur Hanisah/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\Smart_Map\krig\semivariogram.py", line 311, in Fit
          _,rss,r2=self.Gamma(model,[Nugget,Range,Sill])
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          File "C:\Users/Nur Hanisah/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\Smart_Map\krig\semivariogram.py", line 174, in Gamma
          gammaT=func(self.lag,parameter[0],parameter[1],parameter[2])
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          File "C:\Users/Nur Hanisah/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\Smart_Map\krig\variogram_models.py", line 61, in exponential_variogram_model
          return nugget+(psill-nugget)*(1-np.exp(-3.0*d/range_))
          ^^^^^^^^^^^^^^^^^^^^^
         FloatingPointError: underflow encountered in exp