diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/check_hkl.c | 103 |
1 files changed, 96 insertions, 7 deletions
diff --git a/src/check_hkl.c b/src/check_hkl.c index c2ab0788..db41fac5 100644 --- a/src/check_hkl.c +++ b/src/check_hkl.c @@ -3,11 +3,11 @@ * * Characterise reflection lists * - * Copyright © 2012-2013 Deutsches Elektronen-Synchrotron DESY, + * Copyright © 2012-2014 Deutsches Elektronen-Synchrotron DESY, * a research centre of the Helmholtz Association. * * Authors: - * 2010-2013 Thomas White <taw@physics.org> + * 2010-2014 Thomas White <taw@physics.org> * * This file is part of CrystFEL. * @@ -55,15 +55,89 @@ static void show_help(const char *s) " -h, --help Display this help message.\n" " -y, --symmetry=<sym> The symmetry of the input file.\n" " -p, --pdb=<filename> PDB file to use.\n" -" --rmin=<res> Fix lower resolution limit for resolution shells. (m^-1).\n" -" --rmax=<res> Fix upper resolution limit for resolution shells. (m^-1).\n" +" --rmin=<res> Lower resolution limit (1/d in m^-1).\n" +" --rmax=<res> Upper resolution limit (1/d in m^-1).\n" " --sigma-cutoff=<n> Discard reflections with I/sigma(I) < n.\n" -" --nshells=<n> Use <n> resolution shells.\n" -" --shell-file=<file> Write resolution shells to <file>.\n" +" --nshells=<n> Use <n> resolution shells or bins.\n" +" --wilson Calculate a Wilson plot\n" +" --shell-file=<file> Write results table to <file>.\n" "\n"); } +static void wilson_plot(RefList *list, UnitCell *cell, const SymOpList *sym, + double rmin_fix, double rmax_fix, int nbins, + const char *filename) +{ + double rmin, rmax; + double s2min, s2max, s2step; + Reflection *refl; + RefListIterator *iter; + FILE *fh; + double *plot_i; + int *plot_n; + int i; + + resolution_limits(list, cell, &rmin, &rmax); + STATUS("1/d goes from %f to %f nm^-1\n", rmin/1e9, rmax/1e9); + + /* Widen the range just a little bit */ + rmin -= 0.001e9; + rmax += 0.001e9; + + /* Fixed resolution shells if needed */ + if ( rmin_fix > 0.0 ) rmin = rmin_fix; + if ( rmax_fix > 0.0 ) rmax = rmax_fix; + + s2min = pow(rmin/2.0, 2.0); + s2max = pow(rmax/2.0, 2.0); + s2step = (s2max - s2min)/nbins; + + plot_i = malloc(nbins*sizeof(double)); + if ( plot_i == NULL ) return; + for ( i=0; i<nbins; i++ ) plot_i[i] = 0.0; + + plot_n = calloc(nbins, sizeof(int)); + if ( plot_n == NULL ) return; + + for ( refl = first_refl(list, &iter); + refl != NULL; + refl = next_refl(refl, iter) ) + { + signed int h, k, l; + double d, intensity; + int bin; + + get_indices(refl, &h, &k, &l); + + d = resolution(cell, h, k, l); /* This gives "s" */ + intensity = get_intensity(refl); + + bin = (pow(d, 2.0) - s2min)/s2step; + + /* FIXME: Divide by epsilon and Sigma */ + plot_i[bin] += intensity; + plot_n[bin]++; + + } + + for ( i=0; i<nbins; i++ ) plot_i[i] = log(plot_i[i] / plot_n[i]); + + fh = fopen(filename, "w"); + if ( fh == NULL ) return; + fprintf(fh, " n s^2/A^-2 d/A <I>\n"); + for ( i=0; i<nbins; i++ ) { + double s2 = s2min + (i+0.5)*s2step; + fprintf(fh, "%3i %8.6f %8.4f %10f\n", i, + s2/1e20, 0.5e10/sqrt(s2), plot_i[i]); + } + fclose(fh); + + free(plot_i); + free(plot_n); +} + + static void plot_shells(RefList *list, UnitCell *cell, const SymOpList *sym, double rmin_fix, double rmax_fix, int nshells, const char *shell_file) @@ -373,18 +447,25 @@ int main(int argc, char *argv[]) float rmax_fix = -1.0; float sigma_cutoff = -INFINITY; int nshells = 10; + int have_nshells = 0; char *shell_file = NULL; + int wilson = 0; /* Long options */ const struct option longopts[] = { + {"help", 0, NULL, 'h'}, {"symmetry", 1, NULL, 'y'}, {"pdb", 1, NULL, 'p'}, + {"rmin", 1, NULL, 2}, {"rmax", 1, NULL, 3}, {"sigma-cutoff", 1, NULL, 4}, {"nshells", 1, NULL, 5}, {"shell-file", 1, NULL, 6}, + + {"wilson", 0, &wilson, 1}, + {0, 0, NULL, 0} }; @@ -434,6 +515,7 @@ int main(int argc, char *argv[]) ERROR("Invalid value for --nshells\n"); return 1; } + have_nshells = 1; break; case 6 : @@ -518,7 +600,14 @@ int main(int argc, char *argv[]) rej, num_reflections(raw_list), sigma_cutoff); reflist_free(raw_list); - plot_shells(list, cell, sym, rmin_fix, rmax_fix, nshells, shell_file); + if ( wilson ) { + if ( !have_nshells ) nshells = 50; + wilson_plot(list, cell, sym, rmin_fix, rmax_fix, nshells, + shell_file); + } else { + plot_shells(list, cell, sym, rmin_fix, rmax_fix, nshells, + shell_file); + } free_symoplist(sym); reflist_free(list); |