Fix duplicate solutions in the final Pareto solution set and address …

…issues with blank Pareto front plots in newer versions of matplotlib.

geatpy/Algorithm.py

@@ -512,6 +512,8 @@ def finishing(self, pop, globalNDSet=None):
             NDSet = pop[np.where(levels == 1)[0]]  # 只保留种群中的非支配个体，形成一个非支配种群
             if NDSet.CV is not None:  # CV不为None说明有设置约束条件
                 NDSet = NDSet[np.where(np.all(NDSet.CV <= 0, 1))[0]]  # 最后要彻底排除非可行解
+            # 排除重复解
+            NDSet = NDSet[np.unique(NDSet.ObjV,return_index=True,axis=0)[1]]
         else:
             NDSet = globalNDSet
         if self.logTras != 0 and NDSet.sizes != 0 and (

geatpy/visualization/PointScatter.py

@@ -87,7 +87,8 @@ def draw(self):
         elif self.Dimension == 3:
             if self.fig is None and self.ax is None:
                 self.fig = plt.figure()  # 生成一块画布
-                self.ax = Axes3D(self.fig)  # 创建绘图区域
+                # self.ax = Axes3D(self.fig)  # 创建绘图区域
+                self.ax = self.fig.add_subplot(111, projection='3d')  # 创建绘图区域
                 self.ax.view_init(elev=30, azim=45)  # 旋转
             for idx, data in enumerate(self.data_set):
                 params = self.params_set[idx]