Fix bug when ordinal scale only has one data

src/chart/helper/DataSymbol.js

@@ -101,7 +101,6 @@ define(function (require) {
                 var group = this.group;
                 this._data.each(function (dataItem) {
                     var el = dataItem.__el;
-                    el.stopAnimation();
                     el.animateTo({
                         scale: [0, 0]
                     }, 200, 'cubicOut', function () {

src/chart/line/LineView.js

@@ -39,14 +39,6 @@ define(function(require) {
 
             // Initialization animation
             if (!this._data) {
-                var removeClipPath = zrUtil.bind(group.removeClipPath, group);
-
-                var clipPath = isCoordinateSystemPolar
-                    ? this._createPolarClipShape(coordinateSystem, api, removeClipPath)
-                    : this._createGridClipShape(coordinateSystem, api, removeClipPath);
-
-                group.setClipPath(clipPath);
-
                 var polyline = new api.Polyline({
                     shape: {
                         points: points
@@ -59,6 +51,14 @@ define(function(require) {
                     )
                 });
 
+                var removeClipPath = zrUtil.bind(polyline.removeClipPath, polyline);
+
+                var clipPath = isCoordinateSystemPolar
+                    ? this._createPolarClipShape(coordinateSystem, api, removeClipPath)
+                    : this._createGridClipShape(coordinateSystem, api, removeClipPath);
+
+                polyline.setClipPath(clipPath);
+
                 group.add(polyline);
 
                 this._polyline = polyline;

src/coord/Axis.js

@@ -161,15 +161,15 @@ define(function (require) {
         getBands: function () {
             var extent = this._extent;
             var bands = [];
-            var len = this.scale.count() + 1;
+            var len = this.scale.count();
             var start = extent[0];
             var end = extent[1];
             var size = end - start;
 
-            for (var i = 1; i <= len; i++) {
+            for (var i = 0; i < len; i++) {
                 bands.push([
-                    size * (i - 1) / len + start,
-                    size * i / len + start
+                    size * i / len + start,
+                    size * (i + 1) / len + start
                 ]);
             }
             return bands;

src/scale/Ordinal.js

@@ -5,6 +5,7 @@
  * http://en.wikipedia.org/wiki/Level_of_measurement
  */
 
+// FIXME only one data
 define(function (require) {
 
     /**
@@ -37,6 +38,10 @@ define(function (require) {
          */
         normalize: function (val) {
             var extent = this._extent;
+            // Only one data
+            if (extent[1] === extent[0]) {
+                return extent[0];
+            }
             return (val - extent[0]) / (extent[1] - extent[0]);
         },
 
@@ -112,7 +117,7 @@ define(function (require) {
          * @return {number}
          */
         count: function () {
-            return this._extent[1] - this._extent[0];
+            return this._extent[1] - this._extent[0] + 1;
         },
 
         /**

src/util/number.js

@@ -22,7 +22,7 @@ define(function (require) {
         var sub = domain[1] - domain[0];
 
         if (sub === 0) {
-            return val;
+            return domain[0];
         }
         var t = (val - domain[0]) / sub;
         if (clamp) {