循环次数调整

bi-server/src/main/java/com/usoftchina/bi/server/service/chart/ShowHistogramService.java

@@ -182,7 +182,7 @@ public class ShowHistogramService {
                     value = histogramGroupDataList.stream().map(HistogramGroupData::getValue).collect(Collectors.toList()).subList(0, xAxisData.size());
                     Series series = new Series(key, value, groupBy.get(0));
                     serieses.add(series);
-                }while (it.hasNext() && i <= 20);
+                }while (it.hasNext() && i <= xAxisData.size());
             }
             chartsDataInfo.setSerieses(serieses);
         }catch (Exception e){