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--- parameter_dependences [2015/09/03 12:43] – created johnsoevans
+++ parameter_dependences [2022/11/03 15:08] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+====== Parameter Dependences ======
+For complex input files it can be difficult to track which prms feed into individual objects.  For example in a distortion mode or rigid body refinement what feeds into e.g. the x coordinate of a given site.  The command below helps.  N.B. it may soon change its name to "out_dependences_for".
+      out_dependents_for $user_string  $object_name
+The idea is to tag objects and to then output independent parameters associated with the tagged object. For example, in a rigid body:
+      rigid
+            point_for_site Zr_1 ua = Zr_1_x; ub = Zr_1_y; uc = Zr_1_z;
+            point_for_site O1_1 ua = O1_1_x; ub = O1_1_y; uc = O1_1_z;
+            point_for_site O1_2 ua = O1_2_x; ub = O1_2_y; uc = O1_2_z;
+            point_for_site O1_3 ua = O1_3_x; ub = O1_3_y; uc = O1_3_z;
+            Rotate_about_points( =Zr_1_angdeg;, Zr_1, Q_Zr_1)
+            out_dependents_for tag_1 rigid
+we get in the standard output (i.e. the fit window) a list of independent refined parameters associated with the rigid body; ie.
+       out_dependents_for tag_1 rigid
+       Object name followed by prm name
+              prm_10   a4
+              prm_10   a5
+              prm_10   a6
+              prm_10   bnr1
+              prm_10   bnr2
+              prm_10   bnr3
+              prm_10   r3
+              prm_10   r2
+              prm_10   r1
+Note, the object tagged in this case is the rigid body defined just before out_dependents_for.
+There are many $object_name’s that are valid.  Basically all parameters can be tagged, e.g.
+            x, y, z, occ, beq, u11, u22, u33, u12, u13m u23, a, b, c, al, be, ga, etc…
+In addition the following non-parameters can be tagged:
+            site, rigid, sites_restrain, lat_prms, gauss_conv,  lor_conv,  all_scale_pks, th2_offset_eqn
+out_dependents_for works for ‘prm’ and ‘local’. Thus, if we had:
+            prm  O1_3_dy     = +  0.02473*a4 +  0.01749*a5 -  0.03029*a6;:  0.58861`
+            out_dependents_for O1_3_dy prm
+Then the output would be:
+        out_dependents_for O1_3_dy prm
+        Object name followed by prm name
+                prm_10   a4
+                prm_10   a5
+                prm_10   a6