Preset SVG line path or shown label on a layer, with FigConfig parameter

[g1eng]

Request

Layers with ticks are not enough to show specific datum on specific index. A Layer which consists many object to represent many data, hardly shows which is the target datum of user's interest, without tapping the object or getting hover actions.

• A datum should have several representation to be emphasized, not only for hover actions and labels.
• An user should have several way to choose specific datum to show (or add) label or emphasize it. (now only with hover action)

Proposal

• ruler option should be defined to show a line for a layer. A ruler is for X or Y direction and holds its position in X or Y pixels on a layer.
• accentData should be defined to show specific label on rendering. A datum should be specified with column name or its index.

For iterative data:

{
  "accentData": "data_c", 
  "ruler": {
    "x": "data_c"
  }
}

For numeric data:

{
  "accentData": 3, 
  "ruler": {
    "x": 75.35
  }
}

Also updateRuler, updateAccentData or deleteRuler method may be implemented in Layer class, for the future convenience.