cover contour edge cases with contourcarpet

Author: alexcjohnson

test/image/baselines/cheater_contour.png

@@ -15,7 +15,8 @@
       },
       "colorbar": {
         "len": 0.4,
-        "y": 0.25
+        "y": 0.25,
+        "x": 0.45
       },
       "z":[1, 1.96, 2.56, 3.0625, 4, 5.0625, 1, 7.5625, 9, 12.25, 15.21, 14.0625],
       "a":[0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3],
@@ -52,14 +53,16 @@
       "contours":{
         "start":1,
         "end":14,
-        "size":1
+        "size":1,
+        "coloring": "lines"
       },
       "line":{
         "width":2
       },
       "colorbar": {
         "len": 0.4,
-        "y": 0.75
+        "y": 0.75,
+        "x": 0.45
       },
       "z":[1, 1.96, 2.56, 3.0625, 4, 5.0625, 1, 7.5625, 9, 12.25, 15.21, 14.0625],
       "a":[0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3],
@@ -91,10 +94,103 @@
       },
       "xaxis":"x",
       "yaxis":"y2"
+    },
+    {
+      "carpet":"c3",
+      "type":"contourcarpet",
+      "autocontour":false,
+      "contours":{
+        "start":-5,
+        "end":20,
+        "size":1,
+        "coloring": "lines"
+      },
+      "line":{
+        "width":2,
+        "smoothing":0
+      },
+      "colorbar": {
+        "len": 0.4,
+        "y": 0.25
+      },
+      "z":[1, 1.96, 2.56, 3.0625, 4, 5.0625, 1, 7.5625, 9, 12.25, 15.21, 14.0625],
+      "a":[0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3],
+      "b":[4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6],
+      "xaxis":"x2",
+      "yaxis":"y"
+    },
+    {
+      "carpet":"c3",
+      "a":[0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3],
+      "b":[4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6],
+      "y":[1, 1.4, 1.6, 1.75, 2, 2.5, 2.7, 2.75, 3, 3.5, 3.7, 3.75],
+      "x":[2, 3, 4, 5, 2.2, 3.1, 4.1, 5.1, 1.5, 2.5, 3.5, 4.5],
+      "type":"carpet",
+      "aaxis":{
+        "tickprefix":"a = ",
+        "smoothing":0,
+        "minorgridcount":9,
+        "type":"linear"
+      },
+      "baxis":{
+        "tickprefix":"b = ",
+        "smoothing":0,
+        "minorgridcount":9,
+        "type":"linear"
+      },
+      "xaxis":"x2",
+      "yaxis":"y"
+    },
+    {
+      "carpet":"c4",
+      "type":"contourcarpet",
+      "autocontour":false,
+      "contours":{
+        "start":-5,
+        "end":20,
+        "size":1
+      },
+      "line":{
+        "width":2
+      },
+      "colorbar": {
+        "len": 0.4,
+        "y": 0.75
+      },
+      "z":[1, 1.96, 2.56, 3.0625, 4, 5.0625, 1, 7.5625, 9, 12.25, 15.21, 14.0625],
+      "a":[0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3],
+      "b":[4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6],
+      "xaxis":"x2",
+      "yaxis":"y2",
+      "zmin":1,
+      "zmax":15.21,
+      "zauto":true
+    },
+    {
+      "carpet":"c4",
+      "a":[0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 2, 3],
+      "b":[4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6],
+      "y":[1, 1.4, 1.6, 1.75, 2, 2.5, 2.7, 2.75, 3, 3.5, 3.7, 3.75],
+      "x":[2, 3, 4, 5, 2.2, 3.1, 4.1, 5.1, 1.5, 2.5, 3.5, 4.5],
+      "type":"carpet",
+      "aaxis":{
+        "tickprefix":"a = ",
+        "smoothing":1,
+        "minorgridcount":9,
+        "type":"linear"
+      },
+      "baxis":{
+        "tickprefix":"b = ",
+        "smoothing":1,
+        "minorgridcount":9,
+        "type":"linear"
+      },
+      "xaxis":"x2",
+      "yaxis":"y2"
     }
   ],
   "layout": {
-    "width": 600,
+    "width": 1000,
     "height": 600,
     "title": "Cheater plot with 1D input",
     "margin":{
@@ -125,6 +221,20 @@
       ]
     },
     "xaxis":{
+      "domain": [
+        0,
+        0.48
+      ],
+      "range":[
+        0.6676731793960924,
+        5.932326820603907
+      ]
+    },
+    "xaxis2":{
+      "domain": [
+        0.52,
+        1
+      ],
       "range":[
         0.6676731793960924,
         5.932326820603907