X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=treegroupscommand.cpp;h=c26199d673088b5b64872b672ab8e64ca780e616;hb=2b11c674bb4d57c4542ecb89989e1590dd9f07a7;hp=2542431f111f85b5bc344d93388662364045a509;hpb=696633b3cf5f0b6928216069a780fccc87a69f0b;p=mothur.git

diff --git a/treegroupscommand.cpp b/treegroupscommand.cpp
index 2542431..c26199d 100644
--- a/treegroupscommand.cpp
+++ b/treegroupscommand.cpp
@@ -570,13 +570,6 @@ vector< vector<double> > TreeGroupCommand::makeSimsDist() {
 int TreeGroupCommand::makeSimsShared() {
 	try {
         
-        numGroups = lookup.size();
-		lines.resize(processors);
-		for (int i = 0; i < processors; i++) {
-			lines[i].start = int (sqrt(float(i)/float(processors)) * numGroups);
-			lines[i].end = int (sqrt(float(i+1)/float(processors)) * numGroups);
-		}	
-        
         if (subsample) { 
             if (subsampleSize == -1) { //user has not set size, set size = smallest samples size
                 subsampleSize = lookup[0]->getNumSeqs();
@@ -601,8 +594,17 @@ int TreeGroupCommand::makeSimsShared() {
                 lookup = temp;
                 m->setGroups(Groups);
             }
+            
+            if (lookup.size() < 2) { m->mothurOut("You have not provided enough valid groups.  I cannot run the command."); m->mothurOutEndLine(); m->control_pressed = true; return 0; }
         }
         
+        numGroups = lookup.size();
+		lines.resize(processors);
+		for (int i = 0; i < processors; i++) {
+			lines[i].start = int (sqrt(float(i)/float(processors)) * numGroups);
+			lines[i].end = int (sqrt(float(i+1)/float(processors)) * numGroups);
+		}	
+        
 		set<string> processedLabels;
 		set<string> userLabels = labels;