Type of line for the fit line
string
solid
rect,
solid,
spline,
dotted,
dashed,
dotdash,
longdash,
twodash
Area,
AreaLine,
Bar,
BarLine,
Boxplot,
Circular,
Correlation,
DotLine,
Dotplot,
Fish,
Gantt,
Genome,
Heatmap,
Line,
Map,
Network,
ParallelCoordinates,
Pie,
Sankey,
Scatter2D,
Scatter3D,
ScatterBubble2D,
Stacked,
StackedLine,
StackedPercent,
StackedPercentLine,
TagCloud,
Tree,
Treemap,
Venn