summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--ml_exp/c_matrix.py146
1 files changed, 0 insertions, 146 deletions
diff --git a/ml_exp/c_matrix.py b/ml_exp/c_matrix.py
deleted file mode 100644
index ac942d473..000000000
--- a/ml_exp/c_matrix.py
+++ /dev/null
@@ -1,146 +0,0 @@
-"""MIT License
-
-Copyright (c) 2019 David Luevano Alvarado
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-"""
-import math
-import numpy as np
-from numpy.linalg import eig
-
-
-def c_matrix(mol_data,
- nc_data,
- max_len=25,
- as_eig=True,
- bohr_radius_units=False):
- """
- Creates the Coulomb Matrix from the molecule data given.
- mol_data: molecule data, matrix of atom coordinates.
- nc_data: nuclear charge data, array of atom data.
- max_len: maximum amount of atoms in molecule.
- as_eig: if data should be returned as matrix or array of eigenvalues.
- bohr_radius_units: if units should be in bohr's radius units.
- """
- if bohr_radius_units:
- conversion_rate = 0.52917721067
- else:
- conversion_rate = 1
-
- mol_n = len(mol_data)
- mol_nr = range(mol_n)
-
- if not mol_n == len(nc_data):
- print(''.join(['Error. Molecule matrix dimension is different ',
- 'than the nuclear charge array dimension.']))
- else:
- if max_len < mol_n:
- print(''.join(['Error. Molecule matrix dimension (mol_n) is ',
- 'greater than max_len. Using mol_n.']))
- max_len = None
-
- if max_len:
- cm = np.zeros((max_len, max_len))
- ml_r = range(max_len)
-
- # Actual calculation of the coulomb matrix.
- for i in ml_r:
- if i < mol_n:
- x_i = mol_data[i, 0]
- y_i = mol_data[i, 1]
- z_i = mol_data[i, 2]
- Z_i = nc_data[i]
- else:
- break
-
- for j in ml_r:
- if j < mol_n:
- x_j = mol_data[j, 0]
- y_j = mol_data[j, 1]
- z_j = mol_data[j, 2]
- Z_j = nc_data[j]
-
- x = (x_i-x_j)**2
- y = (y_i-y_j)**2
- z = (z_i-z_j)**2
-
- if i == j:
- cm[i, j] = (0.5*Z_i**2.4)
- else:
- cm[i, j] = (conversion_rate*Z_i*Z_j/math.sqrt(x
- + y
- + z))
- else:
- break
-
- # Now the value will be returned.
- if as_eig:
- cm_sorted = np.sort(eig(cm)[0])[::-1]
- # Thanks to SO for the following lines of code.
- # https://stackoverflow.com/a/43011036
-
- # Keep zeros at the end.
- mask = cm_sorted != 0.
- f_mask = mask.sum(0, keepdims=1) >\
- np.arange(cm_sorted.shape[0]-1, -1, -1)
-
- f_mask = f_mask[::-1]
- cm_sorted[f_mask] = cm_sorted[mask]
- cm_sorted[~f_mask] = 0.
-
- return cm_sorted
-
- else:
- return cm
-
- else:
- cm_temp = []
- # Actual calculation of the coulomb matrix.
- for i in mol_nr:
- x_i = mol_data[i, 0]
- y_i = mol_data[i, 1]
- z_i = mol_data[i, 2]
- Z_i = nc_data[i]
-
- cm_row = []
- for j in mol_nr:
- x_j = mol_data[j, 0]
- y_j = mol_data[j, 1]
- z_j = mol_data[j, 2]
- Z_j = nc_data[j]
-
- x = (x_i-x_j)**2
- y = (y_i-y_j)**2
- z = (z_i-z_j)**2
-
- if i == j:
- cm_row.append(0.5*Z_i**2.4)
- else:
- cm_row.append(conversion_rate*Z_i*Z_j/math.sqrt(x
- + y
- + z))
-
- cm_temp.append(np.array(cm_row))
-
- cm = np.array(cm_temp)
- # Now the value will be returned.
- if as_eig:
- return np.sort(eig(cm)[0])[::-1]
- else:
- return cm