Changeset 9217ef8 in sasmodels for example

Timestamp:

Mar 21, 2016 10:35:54 AM (9 years ago)

Author:

Paul Kienzle <pkienzle@…>

Branches:

master, core_shell_microgels, costrafo411, magnetic_model, release_v0.94, release_v0.95, ticket-1257-vesicle-product, ticket_1156, ticket_1265_superball, ticket_822_more_unit_tests

Children:

3a45c2c

Parents:

95441ff

Message:

add data saving to sesansfit; nicer errors when parameters don't exist

Location:

example

Files:

• sesans_parameters_sphere.py (modified) (1 diff)
• sesansfit.py (modified) (2 diffs)

example/sesans_parameters_sphere.py

@@ -27 +27 @@
     "sld" : 7.0,
     "radius" : 1000,
-    "solvent_sld" : 1.0,
+    "sld_solvent" : 1.0,
 }
 

example/sesansfit.py

@@ -54 +54 @@
 
     # Load custom parameters, initial values and parameter ranges
+    pars = model.parameters().copy()
+    pars.update(custom_params)
     for k, v in custom_params.items():
+        if k not in pars:
+            par_error("Can't set parameter %r in model"%k, pars)
         setattr(model, k, v)
         model._parameter_names.append(k)
     for k, v in initial_vals.items():
-        param = model.parameters().get(k)
+        if k not in pars:
+            par_error("Can't get parameter %r from model"%k, pars)
+        param = pars[k]
         param.value = v
     for k, v in param_range.items():
-        param = model.parameters().get(k)
-        if param is not None:
-            param.range(*v)
+        if k not in pars:
+            par_error("Can't set range on parameter %r in model"%k, pars)
+        param = pars[k]
+        param.range(*v)
 
     if False: # for future implementation
@@ -73 +80 @@
         problem = FitProblem(M_sesans)
     return problem
+
+
+def par_error(msg, pars):
+    raise ValueError(msg+"\nAvailable parameters: %s"%", ".join(sorted(pars.keys())))