ludwig-cf · kevinstratford · May 7, 2025 · Feb 27, 2025 · May 6, 2025 · May 6, 2025
diff --git a/CHANGES.md b/CHANGES.md
@@ -1,6 +1,15 @@
 
 ### Changes
 
+version 0.23.1
+
+- Bug fix: https://github.com/ludwig-cf/ludwig/issues/360
+  Colloid input from files in pre version 20 formats was incompletely
+  translated leaving some colloids in an incorrect state in which the
+  colloid was present but had no boundary conditions. This is fixed.
+  The utility programs for generating colloid files have been updated
+  to be consistent with the current format.
+
 version 0.23.0
 
 - Action required. Changes to input file keys related to frequency of i/o.

diff --git a/src/colloids.c b/src/colloids.c
@@ -7,7 +7,7 @@
  *  Edinburgh Soft Matter and Statistical Physics Group and
  *  Edinburgh Parallel Computing Centre
  *
- *  (c) 2010-2024 The University of Edinburgh
+ *  (c) 2010-2025 The University of Edinburgh
  *
  *  Contributing authors:
  *  Kevin Stratford (kevin@epcc.ed.ac.uk)
@@ -1558,7 +1558,9 @@
   colloids_info_update_lists(info);
 
   colloids_info_local_head(info, &pc);
-  for (; pc; pc = pc->next) nupdate += colloid_type_check(&pc->s);
+  for (; pc; pc = pc->nextlocal) {
+    nupdate += colloid_type_check(&pc->s);
+  }
 
   return nupdate;
 }

diff --git a/util/colloid_file.c b/util/colloid_file.c
@@ -98,7 +98,10 @@ int main(int argc, char ** argv) {
     state.r[2] = 1.0; /* Z position */
     state.rng  = index;
 
-    if (binary) {
+    state.bc    = COLLOID_BC_BBL;
+    state.shape = COLLOID_SHAPE_SPHERE;
+
+      if (binary) {
       colloid_state_write_binary(state, fp);
     }
     else {

diff --git a/util/colloid_init.c b/util/colloid_init.c
@@ -26,7 +26,7 @@
  *  Edinburgh Parallel Computing Centre
  *
  *  Kevin Stratford (kevin@epcc.ed.ac.uk)
- *  (c) 2012-2022 The University of Edinburgh
+ *  (c) 2012-2025 The University of Edinburgh
  *
  *****************************************************************************/
 
@@ -153,6 +153,8 @@ int main(int argc, char ** argv) {
     state[n].q0 = q0;
     state[n].q1 = q1;
     state[n].rng = 1 + n;
+    state[n].bc  = COLLOID_BC_BBL;
+    state[n].shape = COLLOID_SHAPE_SPHERE;
   }
 
   if (vf < 0.35) {

diff --git a/version.h b/version.h
@@ -14,6 +14,6 @@
 
 #define LUDWIG_MAJOR_VERSION 0
 #define LUDWIG_MINOR_VERSION 23
-#define LUDWIG_PATCH_VERSION 0
+#define LUDWIG_PATCH_VERSION 1
 
 #endif