Bugfix: zero value regression (#59).

README.md

@@ -29,6 +29,11 @@ Tests use [qunit](http://docs.jquery.com/QUnit), and are in `test.html`.
 
 ## Changelog
 
+### 0.2.9 - 15th May 2012
+
+- Bugfix: Fix zero-value regression
+- Bugfix: Don't modify user-supplied data
+
 ### 0.2.8 - 10th May 2012
 
 - Customising x-axis labels with `xLabelFormat` option

examples/non-continuous.html

@@ -16,13 +16,13 @@
 /* data stolen from http://howmanyleft.co.uk/vehicle/jaguar_'e'_type */
 var day_data = [
   {"period": "2012-10-01", "licensed": 3407},
-  {"period": "2012-09-30", "sorned": 629},
+  {"period": "2012-09-30", "sorned": 0},
   {"period": "2012-09-29", "sorned": 618},
   {"period": "2012-09-20", "licensed": 3246, "sorned": 661},
   {"period": "2012-09-19", "licensed": 3257, "sorned": null},
   {"period": "2012-09-18", "licensed": 3248},
-  {"period": "2012-09-17", "sorned": 660},
-  {"period": "2012-09-16", "sorned": 676},
+  {"period": "2012-09-17", "sorned": 0},
+  {"period": "2012-09-16", "sorned": 0},
   {"period": "2012-09-15", "licensed": 3201, "sorned": 656},
   {"period": "2012-09-10", "licensed": 3215}
 ];

morris.coffee

@@ -87,7 +87,7 @@ class Morris.Line
     for ykey in @options.ykeys
       series_data = []
       for d in @options.data
-        series_data.push(d[ykey] or null)
+        series_data.push(if typeof d[ykey] == 'number' then d[ykey] else null)
       @series.push(series_data)
 
     # translate x labels into nominal dates

morris.js

@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 1.3.1
+// Generated by CoffeeScript 1.3.3
 (function() {
   var $, Morris, minutesSpecHelper, secondsSpecHelper,
     __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };
@@ -9,8 +9,6 @@
 
   Morris.Line = (function() {
 
-    Line.name = 'Line';
-
     function Line(options) {
       this.updateHilight = __bind(this.updateHilight, this);
 
@@ -99,7 +97,7 @@
         _ref1 = this.options.data;
         for (_j = 0, _len1 = _ref1.length; _j < _len1; _j++) {
           d = _ref1[_j];
-          series_data.push(d[ykey] || null);
+          series_data.push(typeof d[ykey] === 'number' ? d[ykey] : null);
         }
         this.series.push(series_data);
       }