rename 'extra' -> 'remainder' + attrs description fixes

Author: etpinard

src/traces/sunburst/attributes.js

@@ -15,8 +15,6 @@ var pieAtts = require('../pie/attributes');
 
 var extendFlat = require('../../lib/extend').extendFlat;
 
-// TODO should we use singular `label`, `parent` and `value`?
-
 module.exports = {
     labels: {
         valType: 'data_array',
@@ -34,7 +32,7 @@ module.exports = {
             'the root node in the hierarchy.',
             'If `ids` is filled, `parents` items are understood to be "ids" themselves.',
             'When `ids` is not set, plotly attempts to find matching items in `labels`,',
-            'but beware there must be unique.'
+            'but beware they must be unique.'
         ].join(' ')
     },
 
@@ -48,14 +46,14 @@ module.exports = {
     },
     branchvalues: {
         valType: 'enumerated',
-        values: ['total', 'extra'],
-        dflt: 'extra',
+        values: ['remainder', 'total'],
+        dflt: 'remainder',
         editType: 'calc',
         role: 'info',
         description: [
             'Determines how the items in `values` are summed.',
             'When set to *total*, items in `values` are taken to be value of all its descendants.',
-            'When set to *extra*, items in `values` corresponding to the root and the branches sectors',
+            'When set to *remainder*, items in `values` corresponding to the root and the branches sectors',
             'are taken to be the extra part not part of the sum of the values at their leaves.'
         ].join(' ')
     },

src/traces/sunburst/calc.js

@@ -137,7 +137,7 @@ exports.calc = function(gd, trace) {
 
     if(hasVals) {
         switch(trace.branchvalues) {
-            case 'extra':
+            case 'remainder':
                 hierarchy.sum(function(d) { return d.data.v; });
                 break;
             case 'total':

test/image/baselines/sunburst_values.png

@@ -2,7 +2,7 @@
   "data": [
     {
       "type": "sunburst",
-      "name": "with branchvalues:extra",
+      "name": "with branchvalues:remainder",
       "labels": ["Eve", "Cain", "Seth", "Enos", "Noam", "Abel", "Awan", "Enoch", "Azura"],
       "parents": ["", "Eve", "Eve", "Seth", "Seth", "Eve", "Eve", "Awan", "Eve" ],
       "values":  [10, 14, 12, 10, 2, 6, 6, 1, 4],
@@ -27,7 +27,7 @@
   "layout": {
     "annotations": [{
       "showarrow": false,
-      "text": "branchvalues: <b>extra</b>",
+      "text": "branchvalues: <b>remainder</b>",
       "x": 0.25,
       "xanchor": "center",
       "y": 1.1,

test/image/mocks/sunburst_values.json

@@ -75,7 +75,7 @@ describe('Test sunburst defaults:', function() {
             {labels: [1], parents: ['']},
         ]);
 
-        expect(fullData[0].branchvalues).toBe('extra', 'base');
+        expect(fullData[0].branchvalues).toBe('remainder', 'base');
         expect(fullData[1].branchvalues).toBe(undefined, 'no values');
     });