<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:lvc="clr-namespace:LiveCharts.Wpf"
                    xmlns:system="clr-namespace:System;assembly=mscorlib">

    <system:Double x:Key="Size">10</system:Double>

</ResourceDictionary>