96471ada1e945584ea0bbd8615fb1f54b743b011
angie
  Mon Jul 10 16:44:40 2023 -0700
Add a bit more info to error message about subtree with no user sample IDs.

diff --git src/hg/hgPhyloPlace/runUsher.c src/hg/hgPhyloPlace/runUsher.c
index 05f688d..8a60a4a 100644
--- src/hg/hgPhyloPlace/runUsher.c
+++ src/hg/hgPhyloPlace/runUsher.c
@@ -469,31 +469,31 @@
                                            struct slName *userSampleIds)
 /* Parse usher's subtree output and figure out which user samples are in subtree. */
 {
 struct subtreeInfo *ti;
 AllocVar(ti);
 ti->subtreeTn = subtreeTn;
 ti->subtree = phyloOpenTree(ti->subtreeTn->forCgi);
 struct hash *subtreeMutHash = hashVpnList(subtreeMuts);
 addMutationsToTree(ti->subtree, subtreeMutHash);
 if (hashNumEntries(subtreeMutHash) != 0)
     errAbort("addMutationsToTree: subtree has fewer nodes than defined in subtree mutations file");
 ti->subtreeNameList = phyloLeafNames(ti->subtree);
 ti->subtreeIdToIx = slNameListToIxHash(ti->subtreeNameList);
 ti->subtreeUserSampleIds = getSubtreeSampleIds(userSampleIds, ti->subtreeIdToIx);
 if (slCount(ti->subtreeUserSampleIds) == 0)
-    errAbort("No user sample IDs found in subtree file %s", ti->subtreeTn->forCgi);
+    errAbort("No user sample IDs (out of %d) found in subtree file %s", slCount(userSampleIds), ti->subtreeTn->forCgi);
 hashFree(&subtreeMutHash);
 return ti;
 }
 
 static struct subtreeInfo *parseSubtrees(int subtreeCount, struct tempName *singleSubtreeTn,
                                          struct variantPathNode *singleSubtreeMuts,
                                          struct tempName *subtreeTns[],
                                          struct variantPathNode *subtreeMuts[],
                                          struct slName *userSampleIds)
 /* Parse usher's subtree output and figure out which user samples are in each subtree.
  * Add parsed singleSubtree at head of list, followed by numbered subtrees. */
 {
 struct subtreeInfo *subtreeInfoList = NULL;
 int sIx;
 for (sIx = 0;  sIx < subtreeCount;  sIx++)