1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
/*
* gradient_panel_x.c
*
* Check gradients for prediction refinement
*
* Copyright © 2012-2023 Deutsches Elektronen-Synchrotron DESY,
* a research centre of the Helmholtz Association.
*
* Authors:
* 2012-2023 Thomas White <taw@physics.org>
*
* This file is part of CrystFEL.
*
* CrystFEL is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* CrystFEL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CrystFEL. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <getopt.h>
#include <image.h>
#include <geometry.h>
#include <predict-refine.h>
#include "gradient_check_utils.h"
int main(int argc, char *argv[])
{
struct image image;
struct reflpeak *rps;
int n_refls;
double **before;
double **after;
int i;
int n_wrong_r = 0;
int n_wrong_fs = 0;
int n_wrong_ss = 0;
int n_wrong_obsr = 0;
int fail = 0;
double step = 0.1; /* Pixels */
gsl_matrix **panel_matrices;
rps = make_test_image(&n_refls, &image);
panel_matrices = make_panel_minvs(image.detgeom);
before = make_dev_list(rps, n_refls, image.detgeom);
image.detgeom->panels[0].cnx += step;
update_predictions(image.crystals[0]);
after = make_dev_list(rps, n_refls, image.detgeom);
for ( i=0; i<n_refls; i++ ) {
float calc[3];
double obs[3];
calc[0] = r_gradient(GPARAM_DET_TX, rps[i].refl,
crystal_get_cell(image.crystals[0]),
image.lambda);
fs_ss_gradient(GPARAM_DET_TX, rps[i].refl,
crystal_get_cell(image.crystals[0]),
&image.detgeom->panels[rps[i].peak->pn],
panel_matrices[rps[i].peak->pn],
&calc[1], &calc[2]);
obs[0] = (after[0][i] - before[0][i]) / step;
obs[1] = (after[1][i] - before[1][i]) / step;
obs[2] = (after[2][i] - before[2][i]) / step;
/* Gradient of excitation error w.r.t. panel should be zero */
if ( fabs(obs[0]) > 1e-12 ) n_wrong_obsr++;
if ( fabs(calc[0]) > 1e-12 ) n_wrong_r++;
/* Panel gradients should be within tolerance */
if ( fabs(obs[1] - calc[1]) > 1e-3 ) n_wrong_fs++;
if ( fabs(obs[2] - calc[2]) > 1e-3 ) n_wrong_ss++;
}
if ( n_wrong_r > 0 ) {
fprintf(stderr, "%i out of %i R gradients were wrong.\n",
n_wrong_r, n_refls);
fail = 1;
}
if ( n_wrong_fs > 0 ) {
fprintf(stderr, "%i out of %i fs gradients were wrong.\n",
n_wrong_fs, n_refls);
fail = 1;
}
if ( n_wrong_ss > 0 ) {
fprintf(stderr, "%i out of %i ss gradients were wrong.\n",
n_wrong_ss, n_refls);
fail = 1;
}
if ( n_wrong_obsr > 0 ) {
fprintf(stderr, "%i out of %i observed R gradients were not zero as expected\n",
n_wrong_obsr, n_refls);
fail = 1;
}
return fail;
}
|
