Changeset 8f04da4 in sasmodels for sasmodels/models/stacked_disks.py

Timestamp:

Aug 2, 2017 2:53:56 AM (7 years ago)

Author:

Paul Kienzle <pkienzle@…>

Branches:

master, core_shell_microgels, costrafo411, magnetic_model, ticket-1257-vesicle-product, ticket_1156, ticket_1265_superball, ticket_822_more_unit_tests

Children:

bd21b12

Parents:

1511c37c

Message:

tuned random model generation for more models

File:

• sasmodels/models/stacked_disks.py (modified) (1 diff)

sasmodels/models/stacked_disks.py

@@ -137 +137 @@
 
 source = ["lib/polevl.c", "lib/sas_J1.c", "lib/gauss76.c", "stacked_disks.c"]
+
+def random():
+    import numpy as np
+    radius = 10**np.random.uniform(1, 4.7)
+    total_stack = 10**np.random.uniform(1, 4.7)
+    n_stacking = int(10**np.random.uniform(0, np.log10(total_stack)-1) + 0.5)
+    d = total_stack/n_stacking
+    thick_core = np.random.uniform(0, d-2)  # at least 1 A for each layer
+    thick_layer = (d - thick_core)/2
+    # Let polydispersity peak around 15%; 95% < 0.4; max=100%
+    sigma_d = d * np.random.beta(1.5, 7)
+    pars = dict(
+        thick_core=thick_core,
+        thick_layer=thick_layer,
+        radius=radius,
+        n_stacking=n_stacking,
+        sigma_d=sigma_d,
+    )
+    return pars
 
 demo = dict(background=0.001,