Diameter of displayed points in pixels. Use zero to hide all points. You can override values for individual series using the series property. If you're using a trendline, the pointSize option will affect the width of the trendline unless you override it with the trendlines.n.pointsize option.

areaChart.setPointSize(5);

The on-and-off pattern for dashed lines. For instance, [4, 4] will repeat 4-length dashes followed by 4-length gaps, and [5, 1, 3] will repeat a 5-length dash, a 1-length gap, a 3-length dash, a 5-length gap, a 1-length dash, and a 3-length gap. See Dashed Lines for more information.

areaChart.setLineDashStyle(Arrays.asList(4,4,4));

Data line width in pixels. Use zero to hide all lines and show only the points. You can override values for individual series using the series property.

areaChart.setLineWidth(5);

The orientation of the chart. When set to 'vertical', rotates the axes of the chart so that (for instance) a column chart becomes a bar chart, and an area chart grows rightward instead of up:

areaChart.setOrientation(Orientation.HORIZONTAL);