From c34d8c681cdc6a10d6a2cb8b6559b86f679aeaf4 Mon Sep 17 00:00:00 2001
From: David Miller <david@deadpansincerity.com>
Date: Thu, 1 Aug 2013 13:06:28 +0100
Subject: [PATCH] Check that all elements of a series are convertable to floats
 before casting individual elements.

---
 src/view.flot.js | 35 +++++++++++++++++++++--------------
 1 file changed, 21 insertions(+), 14 deletions(-)

diff --git a/src/view.flot.js b/src/view.flot.js
index f20a3ab3..4e111fe5 100644
--- a/src/view.flot.js
+++ b/src/view.flot.js
@@ -312,21 +312,28 @@ my.Flot = Backbone.View.extend({
     _.each(this.state.attributes.series, function(field) {
       var points = [];
       var fieldLabel = self.model.fields.get(field).get('label');
-      _.each(self.model.records.models, function(doc, index) {
-        var x = doc.getFieldValueUnrendered(xfield);
 
-        if (isDateTime) {
-          // cast to string as Date(1990) produces 1970 date but Date('1990') produces 1/1/1990
-          var _date = moment(String(x));
-          if (_date.isValid()) {
-            x = _date.toDate().getTime();
-          }
-        } else if (typeof x === 'string') {
-          x = parseFloat(x);
-          if (isNaN(x)) { // assume this is a string label
-            x = index;
-            self.xvaluesAreIndex = true;
-          }
+      var raw = _.map(self.model.records.models, function(doc, index){ return doc.getFieldValueUnrendered(xfield) });
+
+        if (isDateTime){
+            var cast = function(x){
+                var _date = moment(String(x));
+                if (_date.isValid()) {
+                    x = _date.toDate().getTime();
+                }
+                return x
+            }
+        } else if (_.all(raw, function(x){ return !isNaN(parseFloat(x)) })){
+            var cast = function(x){ return parseFloat(x) }
+        } else {
+            self.xvaluesAreIndex = true
+        }
+
+      _.each(self.model.records.models, function(doc, index) {
+        if(self.xvaluesAreIndex){
+            var x = index;
+        }else{
+            var x = cast(doc.getFieldValueUnrendered(xfield));
         }
 
         var yfield = self.model.fields.get(field);