Character Vector
Valid for: Chart
The placelegend property
determines where the chart legend is drawn. The legend shows, for
each series which has a non-empty caption (or title)
property, a sample line, marker, or filled rectangle as appropriate,
next to the caption. (If a given series has no caption, it will not
appear in the legend). This property is a text string, which can be
one of the values 'top',
'left',
'right',
'none',
or an empty vector. If it is 'none'
or an empty vector, the legend is not shown. The default is 'top'.