fix #3013 - inserting new first gap points in previous traces

Author: alexcjohnson

src/traces/scatter/cross_trace_calc.js

@@ -57,10 +57,10 @@ module.exports = function crossTraceCalc(gd, plotinfo) {
         }
         if(!index) {
             // t and trace need to stay on the first cd entry
-            cd[0].t = cd[1].t;
-            cd[0].trace = cd[1].trace;
-            delete cd[1].t;
-            delete cd[1].trace;
+            calcTrace[0].t = calcTrace[1].t;
+            calcTrace[0].trace = calcTrace[1].trace;
+            delete calcTrace[1].t;
+            delete calcTrace[1].trace;
         }
     }
 

test/image/baselines/stacked_area.png

@@ -1,54 +1,54 @@
 {
   "data": [
     {
-        "x": [1, 3, 5, 7], "y": [2, 6, 4, 5], "line": {"color": "red"}, "stackgroup": "a", "name": "bottom", "legendgroup": "b"
-    }, {
         "x": [2, 5, 6], "y": [1, 3, 4], "line": {"color": "green"}, "stackgroup": "a", "name": "middle", "legendgroup": "m"
+    }, {
+        "x": [1, 3, 5, 7], "y": [2, 6, 4, 5], "line": {"color": "red"}, "stackgroup": "a", "name": "bottom", "legendgroup": "b"
     }, {
         "x": [3, 4 ,5], "y": [1, 2, 1], "line": {"color": "blue"}, "stackgroup": "a", "name": "top", "legendgroup": "t"
     },
 
     {
+        "x": [2, 5, 6], "y": [1, 3, 4], "line": {"color": "green"}, "stackgroup": "a", "name": "middle", "legendgroup": "m",
+        "showlegend": false, "xaxis": "x2", "yaxis": "y2"
+    }, {
         "x": [1, 3, 5, 7], "y": [2, 6, 4, 5], "line": {"color": "red"}, "stackgroup": "a", "name": "bottom", "legendgroup": "b",
         "showlegend": false, "xaxis": "x2", "yaxis": "y2",
         "stackgaps": "interpolate"
-    }, {
-        "x": [2, 5, 6], "y": [1, 3, 4], "line": {"color": "green"}, "stackgroup": "a", "name": "middle", "legendgroup": "m",
-        "showlegend": false, "xaxis": "x2", "yaxis": "y2"
     }, {
         "x": [3, 4 ,5], "y": [1, 2, 1], "line": {"color": "blue"}, "stackgroup": "a", "name": "top", "legendgroup": "t",
         "showlegend": false, "xaxis": "x2", "yaxis": "y2"
     },
 
     {
+        "x": [2, 5, 6], "y": [1, 3, 4], "line": {"color": "green"}, "stackgroup": "b", "name": "middle", "legendgroup": "m",
+        "showlegend": false, "xaxis": "x3", "yaxis": "y3", "mode": "lines+markers"
+    }, {
         "x": [1, 3, 5, 7], "y": [2, 6, 4, 5], "line": {"color": "red"}, "stackgroup": "b", "name": "bottom", "legendgroup": "b",
         "showlegend": false, "xaxis": "x3", "yaxis": "y3", "mode": "lines+markers",
         "groupnorm": "fraction"
-    }, {
-        "x": [2, 5, 6], "y": [1, 3, 4], "line": {"color": "green"}, "stackgroup": "b", "name": "middle", "legendgroup": "m",
-        "showlegend": false, "xaxis": "x3", "yaxis": "y3", "mode": "lines+markers"
     }, {
         "x": [3, 4 ,5], "y": [1, 2, 1], "line": {"color": "blue"}, "stackgroup": "b", "name": "top", "legendgroup": "t",
         "showlegend": false, "xaxis": "x3", "yaxis": "y3", "mode": "lines+markers"
     },
 
     {
-        "x": [1, 3, 5, 7], "y": [2, 6, 4, 5], "line": {"color": "red"}, "stackgroup": "a", "name": "bottom", "legendgroup": "b",
-        "showlegend": false, "xaxis": "x4", "yaxis": "y4", "mode": "lines+markers"
-    }, {
         "x": [2, 5, 6], "y": [1, 3, 4], "line": {"color": "green"}, "stackgroup": "a", "name": "middle", "legendgroup": "m",
         "showlegend": false, "xaxis": "x4", "yaxis": "y4", "mode": "lines+markers",
         "stackgaps": "interpolate", "groupnorm": "fraction"
+    }, {
+        "x": [1, 3, 5, 7], "y": [2, 6, 4, 5], "line": {"color": "red"}, "stackgroup": "a", "name": "bottom", "legendgroup": "b",
+        "showlegend": false, "xaxis": "x4", "yaxis": "y4", "mode": "lines+markers"
     }, {
         "x": [3, 4 ,5], "y": [1, 2, 1], "line": {"color": "blue"}, "stackgroup": "a", "name": "top", "legendgroup": "t",
         "showlegend": false, "xaxis": "x4", "yaxis": "y4", "mode": "lines+markers"
     },
 
     {
-        "x": [1, 3, 5, 7], "y": [2, 6, 4, 5], "line": {"color": "red"}, "stackgroup": "a", "name": "bottom", "legendgroup": "b",
+        "x": [2, 5, 6], "y": [1, 3, 4], "line": {"color": "green"}, "stackgroup": "a", "name": "middle", "legendgroup": "m",
         "showlegend": false, "xaxis": "x5", "yaxis": "y5"
     }, {
-        "x": [2, 5, 6], "y": [1, 3, 4], "line": {"color": "green"}, "stackgroup": "a", "name": "middle", "legendgroup": "m",
+        "x": [1, 3, 5, 7], "y": [2, 6, 4, 5], "line": {"color": "red"}, "stackgroup": "a", "name": "bottom", "legendgroup": "b",
         "showlegend": false, "xaxis": "x5", "yaxis": "y5"
     }, {
         "x": [3, 4 ,5], "y": [1, 2, 1], "line": {"color": "blue"}, "stackgroup": "a", "name": "top", "legendgroup": "t",
@@ -57,12 +57,12 @@
     },
 
     {
+        "x": [2, 5, 6], "y": [1, 3, 4], "line": {"color": "green"}, "stackgroup": "a", "name": "middle", "legendgroup": "m",
+        "showlegend": false, "xaxis": "x6", "yaxis": "y6"
+    }, {
         "x": [1, 3, 5, 7], "y": [2, 6, 4, 5], "line": {"color": "red"}, "stackgroup": "a", "name": "bottom", "legendgroup": "b",
         "showlegend": false, "xaxis": "x6", "yaxis": "y6",
         "groupnorm": "percent"
-    }, {
-        "x": [2, 5, 6], "y": [1, 3, 4], "line": {"color": "green"}, "stackgroup": "a", "name": "middle", "legendgroup": "m",
-        "showlegend": false, "xaxis": "x6", "yaxis": "y6"
     }, {
         "x": [3, 4 ,5], "y": [1, 2, 1], "line": {"color": "blue"}, "stackgroup": "a", "name": "top", "legendgroup": "t",
         "showlegend": false, "xaxis": "x6", "yaxis": "y6",