Function: resolveDashPattern()

function resolveDashPattern(dash, lineWidth, viewport?): number[];

Experimental

Resolve a dash spec to on/off lengths in CSS px. Returns an empty array for a solid line.

• Named styles scale with the line width exactly like Plotly (Drawing.dashStyle), using max(width, 3) so thin lines still get visible dashes.
• Custom lists follow SVG stroke-dasharray: unitless or px values are CSS px; percentages are relative to the normalized viewport diagonal sqrt((w² + h²) / 2); an odd-length list is repeated to make it even; a negative value, a non-numeric token, or an all-zero list yields a solid line.
• Lists longer than MAX_DASH_ENTRIES are truncated to an even prefix.

Parameters

Parameter	Type
dash	LineDash | undefined
lineWidth	number
viewport	{ height: number; width: number; }
viewport.height	number
viewport.width	number

Returns

number[]