GeezerVison

- Enable `marker.line.dash` attribute in scatter trace definitions with support for array values
- Apply dash patterns to marker outlines in both open and closed marker styles
- Merge dash data into calcdata for per-point dash styling
- Include dash information in legend marker rendering to match trace appearance
- Default dash handling falls back to trace-level `marker.line.dash` when per-point values are not specified

- Document new feature that adds support for dashed marker lines in scatter plots
- Reference pull request plotly#7673 for tracking purposes

- Extends marker line styling capabilities by including the `dash` attribute alongside existing `width` attribute
- Enables dashed marker line borders for `scatter3d`, `scattercarpet`, `scattergeo`, `scattergl`, `scatterternary`, and `splom` trace types
- Maintains consistency with base scatter trace marker line attributes by reusing `scatterMarkerLineAttrs.dash`
- Applies appropriate constraints where needed, such as `arrayOk: false` for 3D traces and `editType: 'calc'` for other trace types

- Prevent marker line borders from rendering on blank data points by setting line width to 0 when `d.isBlank` is true in the `singlePointStyle()` function
- Add `dash` and `dashsrc` schema attributes for marker line styling across multiple chart types to support customisable dash patterns
- Ensure blank points appear correctly without visible outlines while maintaining proper styling for non-blank markers

- Add `dash` property to marker line configurations across multiple plot types, allowing customisation of line dash patterns
- Support both predefined dash styles (`solid`, `dot`, `dash`, `longdash`, `dashdot`, `longdashdot`) and custom dash length lists in pixels
- Include `dashsrc` property for Chart Studio Cloud integration to enable data source references for dash styling
- Set default value to `solid` for consistent backward compatibility
- Enable array support for most implementations to allow per-marker dash customisation

- Simplify the dash line styling implementation by replacing the single `.style()` call with an object parameter with chained `.style()` method calls
- Set `stroke-dasharray` to `null` when dash is falsy to properly clear the style rather than setting it to an empty or undefined value
- Improve code readability through method chaining pattern

- Consolidate style application in `dashLine()` function to use object notation instead of chained method calls
- Remove unused `lineDash` variable and associated `dashLine()` calls in marker styling logic
- Eliminate redundant dash line styling for open markers and blank points that was not being applied correctly

camdecoster left a comment

…catter` plot

…& `splom` traces. Revert to the changes from the `master` branch

camdecoster left a comment

- In the `attributes.js` file for the traces `scatter3d`, `scattergl`, and `splom`

- Enable array support for the `dash` attribute.
- Correct line from `editType: 'style'` to `arrayOk: true`

- Introduce a new mock data file for testing scatter marker line dash
- Implement tests for marker line dash functionality
- Validate support for array of dashes in markers
- Ensure marker line dash is displayed in the legend
- Confirm marker line dash updates via restyle
- Test marker line dash on open markers

…-dash-7667

This reverts commit d4d4972.

camdecoster left a comment