Do the hover effects highlight individual points (markers or line points) or do they highlight filled regions? If the fill is *toself* or *tonext* and there are no markers or text, then the default is *fills*, otherwise it is *points*.

Determines the line shape. With *spline* the lines are drawn using spline interpolation. The other available values correspond to step-wise line shapes.

Has an effect only if `shape` is set to *spline* Sets the amount of smoothing. *0* corresponds to no smoothing (equivalent to a *linear* shape).

Sets the dash style of lines. Set to a dash type string (*solid*, *dot*, *dash*, *longdash*, *dashdot*, or *longdashdot*) or a dash length list in px (eg *5px,10px,2px,2px*).

Simplifies lines by removing nearly-collinear points. When transitioning lines, it may be desirable to disable this so that the number of points along the resulting SVG path is unaffected.

Determines whether or not gaps (i.e. {nan} or missing values) in the provided data arrays are connected.

Determines whether or not markers and text nodes are clipped about the subplot axes. To show markers and text nodes above axis lines and tick labels, make sure to set `xaxis.layer` and `yaxis.layer` to *below traces*.

Sets the area to fill with a solid color. Use with `fillcolor` if not *none*. *tozerox* and *tozeroy* fill to x=0 and y=0 respectively. *tonextx* and *tonexty* fill between the endpoints of this trace and the endpoints of the trace before it, connecting those endpoints with straight lines (to make a stacked area graph); if there is no trace before it, they behave like *tozerox* and *tozeroy*. *toself* connects the endpoints of the trace (or each segment of the trace if it has gaps) into a closed shape. *tonext* fills the space between two traces if one completely encloses the other (eg consecutive contour lines), and behaves like *toself* if there is no trace before it. *tonext* should not be used if one trace does not enclose the other.

Sets the fill color. Defaults to a half-transparent variant of the line color, marker color, or marker line color, whichever is available.