Clean up examples folders (#3545)

* Clean up examples folders

* Use `snake_case` names

* Rename `nci_corrector` as `nci_fdtd_stability`

1 files changed, 0 insertions, 114 deletions

diff --git a/Examples/Modules/space_charge_initialization/analysis.py b/Examples/Modules/space_charge_initialization/analysis.py
deleted file mode 100755
index 0df21e6d9..000000000
--- a/Examples/Modules/space_charge_initialization/analysis.py
+++ /dev/null
@@ -1,114 +0,0 @@
-#!/usr/bin/env python3
-
-# Copyright 2019-2020 Axel Huebl, Remi Lehe
-#
-# This file is part of WarpX.
-#
-# License: BSD-3-Clause-LBNL
-
-"""
-This script checks the space-charge initialization routine, by
-verifying that the space-charge field of a Gaussian beam corresponds to
-the expected theoretical field.
-"""
-import os
-import sys
-
-import matplotlib
-
-matplotlib.use('Agg')
-import matplotlib.pyplot as plt
-import numpy as np
-import scipy.constants as scc
-from scipy.special import gammainc
-import yt
-
-yt.funcs.mylog.setLevel(0)
-sys.path.insert(1, '../../../../warpx/Regression/Checksum/')
-import checksumAPI
-
-# Parameters from the Simulation
-Qtot = -1.e-20
-r0 = 2.e-6
-
-# Open data file
-filename = sys.argv[1]
-ds = yt.load( filename )
-# yt 4.0+ has rounding issues with our domain data:
-# RuntimeError: yt attempted to read outside the boundaries
-#               of a non-periodic domain along dimension 0.
-if 'force_periodicity' in dir(ds): ds.force_periodicity()
-
-# Extract data
-ad0 = ds.covering_grid(level=0, left_edge=ds.domain_left_edge, dims=ds.domain_dimensions)
-Ex_array = ad0[("mesh", "Ex")].to_ndarray().squeeze()
-if ds.dimensionality == 2:
-    # Rename the z dimension as y, so as to make this script work for 2d and 3d
-    Ey_array = ad0[("mesh", "Ez")].to_ndarray().squeeze()
-elif ds.dimensionality == 3:
-    Ey_array = ad0[("mesh", "Ey")].to_ndarray()
-    Ez_array = ad0[("mesh", "Ez")].to_ndarray()
-
-# Extract grid coordinates
-Nx, Ny, Nz =  ds.domain_dimensions
-xmin, ymin, zmin = ds.domain_left_edge.v
-Lx, Ly, Lz = ds.domain_width.v
-x = xmin + Lx/Nx*(0.5+np.arange(Nx))
-y = ymin + Ly/Ny*(0.5+np.arange(Ny))
-z = zmin + Lz/Nz*(0.5+np.arange(Nz))
-
-# Compute theoretical field
-if ds.dimensionality == 2:
-    x_2d, y_2d = np.meshgrid(x, y, indexing='ij')
-    r2 = x_2d**2 + y_2d**2
-    factor = (Qtot/r0)/(2*np.pi*scc.epsilon_0*r2) * (1-np.exp(-r2/(2*r0**2)))
-    Ex_th = x_2d * factor
-    Ey_th = y_2d * factor
-elif ds.dimensionality == 3:
-    x_2d, y_2d, z_2d = np.meshgrid(x, y, z, indexing='ij')
-    r2 = x_2d**2 + y_2d**2 + z_2d**2
-    factor = Qtot/(4*np.pi*scc.epsilon_0*r2**1.5) * gammainc(3./2, r2/(2.*r0**2))
-    Ex_th = factor*x_2d
-    Ey_th = factor*y_2d
-    Ez_th = factor*z_2d
-
-# Plot theory and data
-def make_2d(arr):
-    if arr.ndim == 3:
-        return arr[:,:,Nz//2]
-    else:
-        return arr
-plt.figure(figsize=(10,10))
-plt.subplot(221)
-plt.title('Ex: Theory')
-plt.imshow(make_2d(Ex_th))
-plt.colorbar()
-plt.subplot(222)
-plt.title('Ex: Simulation')
-plt.imshow(make_2d(Ex_array))
-plt.colorbar()
-plt.subplot(223)
-plt.title('Ey: Theory')
-plt.imshow(make_2d(Ey_th))
-plt.colorbar()
-plt.subplot(224)
-plt.title('Ey: Simulation')
-plt.imshow(make_2d(Ey_array))
-plt.colorbar()
-plt.savefig('Comparison.png')
-
-# Automatically check the results
-def check(E, E_th, label):
-    print( 'Relative error in %s: %.3f'%(
-            label, abs(E-E_th).max()/E_th.max()))
-    tolerance_rel = 0.165
-    print("tolerance_rel: " + str(tolerance_rel))
-    assert np.allclose( E, E_th, atol=tolerance_rel*E_th.max() )
-
-check( Ex_array, Ex_th, 'Ex' )
-check( Ey_array, Ey_th, 'Ey' )
-if ds.dimensionality == 3:
-    check( Ez_array, Ez_th, 'Ez' )
-
-test_name = os.path.split(os.getcwd())[1]
-checksumAPI.evaluate_checksum(test_name, filename, do_particles=0)