Bar: fix issue #372 - bar widths with nonnumeric sizes

Author: seibs

src/traces/bar/calc.js

@@ -40,7 +40,7 @@ module.exports = function calc(gd, trace) {
     var serieslen = Math.min(pos.length, size.length),
         cd = [];
     for(i=0; i<serieslen; i++) {
-        if((isNumeric(pos[i]) && isNumeric(size[i]))) {
+        if(isNumeric(pos[i])) {
             cd.push({p: pos[i], s: size[i], b: 0});
         }
     }

test/image/baselines/bar_nonnumeric_sizes.png

@@ -0,0 +1,19 @@
+{
+  "data": [
+    {
+      "x": [
+        "a",
+        "b",
+        "c",
+        "d"
+      ],
+      "y": [
+        1,
+        null,
+        "nonsense",
+        15
+      ],
+      "type": "bar"
+    }
+  ]
+}