Annotation wrong when change datapoint.xValue


#1

I add annotation on chart view in sample project “Column Series”.

When the datapoint.xValue change to number, the annotation will be wrong, follow the figures,

this is correct annotation.

when datapoint.xValue change to number, annotation will be wrong

here is soruce code: https://dl.dropboxusercontent.com/u/16971098/ColumnSeries_annotation.zip

What’s wrong with second figure? please help me, thanks.