Merge pull request #235 from klauslanza/klauslanza-piechart-labels

Piechart labels filter based on values

@@ -38,6 +38,9 @@
 /** Show absolute values not relative i.e. percentages */
 @property (nonatomic) BOOL showAbsoluteValues;
 
+/** Hide percentage labels less than cutoff value */
+@property (nonatomic, assign) CGFloat labelPercentageCutoff;
+
 /** Default YES. */
 @property (nonatomic) BOOL shouldHighlightSectorOnTouch;
 

@@ -145,6 +145,12 @@
         descriptionLabel.text = str ;
     }
     
+    //If value is less than cutoff, show no label
+    if ([self ratioForItemAtIndex:index] < self.labelPercentageCutoff )
+    {
+        descriptionLabel.text = nil;
+    }
+    
     CGPoint center = CGPointMake(_outerCircleRadius + distance * sin(rad),
                                  _outerCircleRadius - distance * cos(rad));