-Fix default axis formatting function. Fixes #1557.

-Keep single defaults location
-Update documentation on formatting function.

docs/graph2d/index.html

@@ -470,12 +470,11 @@ var options = {
             <td>Function</td>
             <td></td>
             <td>Insert a custom function on how to format the label. The function will receive a numeric value and has to return a string. Default function is:
-            <pre class="code">
+            <pre class="prettyprint lang-js">
 function (value) {
-  return value;
-}
-            </pre>
-            which does nothing to it.</td>
+  return ''+value.toPrecision(3);
+}</pre>
+            </td>
         </tr>
         <tr parent="dataAxis" class="hidden">
             <td class="indent2">dataAxis.left.range.min</td>

lib/timeline/DataStep.js

@@ -190,21 +190,11 @@ DataStep.prototype.previous = function() {
 DataStep.prototype.getCurrent = function() {
   // prevent round-off errors when close to zero
   var current = (Math.abs(this.current) < this.step / 2) ? 0 : this.current;
-  var returnValue = current.toPrecision(5);
+  var returnValue = current;
   if (typeof this.formattingFunction === 'function') {
-    returnValue = this.formattingFunction(current);
+    return this.formattingFunction(current);
   }
-
-  if (typeof returnValue === 'number') {
-    return '' + returnValue;
-  }
-  else if (typeof returnValue === 'string') {
-    return returnValue;
-  }
-  else {
-    return current.toPrecision(5);
-  }
-
+  return '' + returnValue.toPrecision(3);
 };
 
 /**

lib/timeline/component/DataAxis.js

@@ -19,7 +19,7 @@ function DataAxis (body, options, svg, linegraphOptions) {
     orientation: 'left',  // supported: 'left', 'right'
     showMinorLabels: true,
     showMajorLabels: true,
-    icons: true,
+    icons: false,
     majorLinesOffset: 7,
     minorLinesOffset: 4,
     labelOffsetX: 10,
@@ -30,12 +30,12 @@ function DataAxis (body, options, svg, linegraphOptions) {
     alignZeros: true,
     left:{
       range: {min:undefined,max:undefined},
-      format: function (value) {return value;},
+      format: function (value) {return ''+value.toPrecision(3);},
       title: {text:undefined,style:undefined}
     },
     right:{
       range: {min:undefined,max:undefined},
-      format: function (value) {return value;},
+      format: function (value) {return ''+value.toPrecision(3);},
       title: {text:undefined,style:undefined}
     }
   };

lib/timeline/component/Legend.js

@@ -8,7 +8,7 @@ var Component = require('./Component');
 function Legend(body, options, side, linegraphOptions) {
   this.body = body;
   this.defaultOptions = {
-    enabled: true,
+    enabled: false,
     icons: true,
     iconSize: 20,
     iconSpacing: 6,
@@ -21,6 +21,7 @@ function Legend(body, options, side, linegraphOptions) {
       position: 'top-left' // top/bottom - left,center,right
     }
   }
+
   this.side = side;
   this.options = util.extend({},this.defaultOptions);
   this.linegraphOptions = linegraphOptions;

lib/timeline/component/LineGraph.js

@@ -50,40 +50,8 @@ function LineGraph(body, options) {
       size: 6,
       style: 'square' // square, circle
     },
-    dataAxis: {
-      showMinorLabels: true,
-      showMajorLabels: true,
-      icons: false,
-      width: '40px',
-      visible: true,
-      alignZeros: true,
-      left: {
-        range: {min: undefined, max: undefined},
-        format: function (value) {
-          return value;
-        },
-        title: {text: undefined, style: undefined}
-      },
-      right: {
-        range: {min: undefined, max: undefined},
-        format: function (value) {
-          return value;
-        },
-        title: {text: undefined, style: undefined}
-      }
-    },
-    legend: {
-      enabled: false,
-      icons: true,
-      left: {
-        visible: true,
-        position: 'top-left' // top/bottom - left,right
-      },
-      right: {
-        visible: true,
-        position: 'top-right' // top/bottom - left,right
-      }
-    },
+    dataAxis: {}, //Defaults are done on DataAxis level
+    legend: {}, //Defaults are done on Legend level
     groups: {
       visibility: {}
     }