Replace deprecated numpy trapezoid/trapz usage with scipy trapezoid

pyspectral/radiance_tb_conversion.py

@@ -28,17 +28,12 @@
 from numbers import Number
 
 import numpy as np
+from scipy.integrate import trapezoid
 
-from pyspectral._compat import np_trapezoid
 from pyspectral.blackbody import C_SPEED, H_PLANCK, K_BOLTZMANN, blackbody, blackbody_wn
 from pyspectral.rsr_reader import RelativeSpectralResponse
 from pyspectral.utils import BANDNAMES, WAVE_LENGTH, WAVE_NUMBER, convert2wavenumber, get_bandname_from_wavelength
 
-try:
-    from scipy.integrate import trapezoid
-except ImportError:
-    from scipy.integrate import trapz as trapezoid
-
 LOG = logging.getLogger(__name__)
 
 BLACKBODY_FUNC = {WAVE_LENGTH: blackbody,
@@ -160,7 +155,7 @@ def _get_rsr(self):
                                          self._wave_si_scale)
         self.response = self.rsr[self.bandname][self.detector]['response']
         # Get the integral of the spectral response curve:
-        self.rsr_integral = np_trapezoid(self.response, self.wavelength_or_wavenumber)
+        self.rsr_integral = trapezoid(self.response, self.wavelength_or_wavenumber)
 
     def _getsatname(self):
         """Get the satellite name used in the rsr-reader, from the platform and number."""

pyspectral/rsr_reader.py

@@ -24,7 +24,8 @@
 from glob import glob
 from os.path import expanduser
 
-from pyspectral._compat import np_trapezoid
+from scipy.integrate import trapezoid
+
 from pyspectral.bandnames import BANDNAMES
 from pyspectral.config import get_config
 from pyspectral.utils import (
@@ -213,7 +214,7 @@ def integral(self, bandname):
         for det in self.rsr[bandname].keys():
             wvl = self.rsr[bandname][det]['wavelength']
             resp = self.rsr[bandname][det]['response']
-            intg[det] = np_trapezoid(resp, wvl)
+            intg[det] = trapezoid(resp, wvl)
         return intg
 
     def convert(self):

pyspectral/solar.py

@@ -29,8 +29,7 @@
 from pathlib import Path
 
 import numpy as np
-
-from pyspectral._compat import np_trapezoid
+from scipy.integrate import trapezoid
 
 LOG = logging.getLogger(__name__)
 
@@ -123,9 +122,9 @@
     def solar_constant(self):
         """Calculate the solar constant."""
         if self.wavenumber is not None:
-            return np_trapezoid(self.irradiance, self.wavenumber)
+            return trapezoid(self.irradiance, self.wavenumber)
         if self.wavelength is not None:
-            return np_trapezoid(self.irradiance, self.wavelength)
+            return trapezoid(self.irradiance, self.wavelength)
 
         raise TypeError('Neither wavelengths nor wavenumbers available!')
 
@@ -206,10 +205,10 @@
 
         # Calculate the solar-flux: (w/m2)
         if flux:
-            return np_trapezoid(irr * resp_ipol, wvl)
+            return trapezoid(irr * resp_ipol, wvl)
 
         # Divide by the equivalent band width:
-        return np_trapezoid(irr * resp_ipol, wvl) / np_trapezoid(resp_ipol, wvl)
+        return trapezoid(irr * resp_ipol, wvl) / trapezoid(resp_ipol, wvl)
 
     def interpolate(self, **options):
         """Interpolate Irradiance to a specified evenly spaced resolution/grid.

pyspectral/utils.py

@@ -29,8 +29,8 @@
 
 import numpy as np
 import requests
+from scipy.integrate import trapezoid
 
-from pyspectral._compat import np_trapezoid
 from pyspectral.bandnames import BANDNAMES
 from pyspectral.config import get_config
 
@@ -226,7 +226,7 @@ def get_central_wave(wav, resp, weight=1.0):
     # if info['unit'].find('-1') > 0:
     # Wavenumber:
     #     res *=
-    return np_trapezoid(resp * wav * weight, wav) / np_trapezoid(resp * weight, wav)
+    return trapezoid(resp * wav * weight, wav) / trapezoid(resp * weight, wav)
 
 
 def get_bandname_from_wavelength(sensor, wavelength, rsr, epsilon=0.1, multiple_bands=False):

rsr_convert_scripts/seviri_rsr.py

@@ -25,6 +25,7 @@
 
 import numpy as np
 import pkg_resources
+from scipy.integrate import trapezoid
 from xlrd import open_workbook
 
 from pyspectral.config import get_config
@@ -210,7 +211,7 @@ def get_centrals(self):
 
 def get_central_wave(wavl, resp):
     """Calculate the central wavelength (or the central wavenumber if inputs are wave numbers)."""
-    return np.trapz(resp * wavl, wavl) / np.trapz(resp, wavl)
+    return trapezoid(resp * wavl, wavl) / trapezoid(resp, wavl)
 
 
 def generate_seviri_file(seviri, platform_name):

setup.py

@@ -29,7 +29,7 @@
 with open('./README.md', 'r') as fd:
     long_description = fd.read()
 
-requires = ['numpy', 'scipy', 'python-geotiepoints>=1.1.1',
+requires = ['numpy', 'scipy>=1.6.0', 'python-geotiepoints>=1.1.1',
             'h5py>=2.5', 'requests', 'pyyaml', 'platformdirs']
 
 dask_extra = ['dask[array]']