diff options
| author | Thomas White <taw@physics.org> | 2011-10-07 16:31:42 +0200 |
|---|---|---|
| committer | Thomas White <taw@physics.org> | 2012-02-22 15:27:39 +0100 |
| commit | 055fc06b42b9917ddf466b90cfd61f1df3f337b1 (patch) | |
| tree | 432399506a15e5f4752703adb7051d6e4a0213b8 /src | |
| parent | 3c21788dc0f08f42ab65c740f62b8cfc74ca7fe3 (diff) | |
Add weighting scheme
Diffstat (limited to 'src')
| -rw-r--r-- | src/post-refinement.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/post-refinement.c b/src/post-refinement.c index 5a6ba4dc..81ca8c61 100644 --- a/src/post-refinement.c +++ b/src/post-refinement.c @@ -351,6 +351,7 @@ static double pr_iterate(struct image *image, const RefList *full) { signed int ha, ka, la; double I_full, delta_I; + double w; double I_partial; int k; double p; @@ -373,6 +374,11 @@ static double pr_iterate(struct image *image, const RefList *full) I_partial = get_intensity(refl); p = get_partiality(refl); + /* Calculate the weight for this reflection */ + w = pow(get_esd_intensity(refl), 2.0); + w += p * I_full * pow(get_esd_intensity(match), 2.0); + w = pow(w, -1.0); + /* Calculate all gradients for this reflection */ for ( k=0; k<NUM_PARAMS; k++ ) { double gr; @@ -393,7 +399,7 @@ static double pr_iterate(struct image *image, const RefList *full) if ( g > k ) continue; M_c = gradients[g] * gradients[k]; - M_c *= pow(image->osf * I_full, 2.0); + M_c *= w * pow(image->osf * I_full, 2.0); M_curr = gsl_matrix_get(M, k, g); gsl_matrix_set(M, k, g, M_curr + M_c); @@ -402,7 +408,7 @@ static double pr_iterate(struct image *image, const RefList *full) } delta_I = I_partial - (p * I_full); - v_c = delta_I * I_full * gradients[k]; + v_c = w * delta_I * I_full * gradients[k]; v_curr = gsl_vector_get(v, k); gsl_vector_set(v, k, v_curr + v_c); |