Better ticks in user set interval case

src/scale/Interval.js

@@ -59,6 +59,9 @@ define(function (require) {
          */
         setInterval: function (interval) {
             this._interval = interval;
+            // Dropped auto calculated niceExtent and use user setted extent
+            // We assume user wan't to set both interval, min, max to get a better result
+            this._niceExtent = this._extent.slice();
         },
 
         /**

src/util/format.js

@@ -63,7 +63,7 @@ define(function (require) {
         return '{' + varName + (seriesIdx == null ? '' : seriesIdx) + '}';
     }
     /**
-     * Label string formatter
+     * Template formatter
      * @param  {string} tpl
      * @param  {Array.<Object>|Object} paramsList
      * @return {string}