removes the word rows from ds.print and the interface of dsquery.limit

include/clients/nrt/DataSetQueryClient.hpp

@@ -144,10 +144,10 @@ class DataSetQueryClient : public FluidBaseClient, OfflineIn, OfflineOut
     return OK();
   }
 
-  MessageResult<void> limit(index rows)
+  MessageResult<void> limit(index points)
   {
-    if (rows <= 0) return Error("invalid value");
-    mAlgorithm.limit(rows);
+    if (points <= 0) return Error("invalid limit on the number of points");
+    mAlgorithm.limit(points);
     return OK();
   }
 

include/data/FluidDataSet.hpp

@@ -170,7 +170,7 @@ class FluidDataSet
     using namespace std;
     if (size() == 0) return "{}";
     ostringstream result;
-    result << endl << "rows: " << size() << " cols: " << pointSize() << endl;
+    result << endl << "points:" << size() << "     cols:" << pointSize() << endl;
     if (size() < maxRows)
     {
       for (index r = 0; r < size(); r++)

tests/data/approval_tests/TestFluidDataSet.FluidDataSet_prints_consistent_summaries_for_approval.bigger.approved.txt

@@ -1,5 +1,5 @@
 
-rows: 100 cols: 100
+points:100     cols:100
 0          0         1         2       ...        97        98        99
 0        100       101       102       ...       197       198       199
 0        200       201       202       ...       297       298       299

tests/data/approval_tests/TestFluidDataSet.FluidDataSet_prints_consistent_summaries_for_approval.small.approved.txt

@@ -1,5 +1,5 @@
 
-rows: 2 cols: 5
+points:2     cols:5
 zero          0         1         2         3         4
 one          5         6         7         8         9