hide overlapping labels in 3d

Author: archmoj

test/image/baselines/grid_subplot_types.png

@@ -28,7 +28,7 @@
     "xaxis3": {"title": {"text": "x3"}, "labelalias": {"0": "ZERO<sup>2</sup>"}},
     "yaxis3": {"title": {"text": "y3"}, "labelalias": {"0": "ZERO<sup>2</sup>"}},
     "grid": {"rows": 3, "columns": 3, "xgap": 0.3, "ygap": 0.3},
-    "scene": {"domain": {"row": 1, "column": 1}, "zaxis": {"labelalias": {"1.5": "1+½", "2": "√4", "2.5": "5/<sub>2</sub>"}}},
+    "scene": {"domain": {"row": 1, "column": 1}, "zaxis": {"labelalias": {"1": "", "1.5": "1+½", "2": "√4", "2.5": "5/<sub>2</sub>", "3.5": ""}}},
     "ternary": {"domain": {"row": 1, "column": 2}, "caxis": {"labelalias": {"1": "ONE"}}},
     "geo": {"domain": {"row": 2, "column": 1}},
     "width": 700,