OptionalwarningOptionalnameWhat the layer is, when the producer named it, as in a populated state.
OptionalplotThe layer's type as it announces itself, as in a populated state.
OptionaltitleThe layer's title, as in a populated state.
OptionalxThe x axis label the layer authored, or empty, as in a populated state.
OptionalyThe y axis label the layer authored, or empty, as in a populated state.
OptionalinSet on a braille state that is empty only outside grid navigation: a scatter whose axes declare a grid shows its points in braille cell by cell there, and nowhere else.
Empty trace state used as a placeholder when no data is available.
A layer with nothing to read at the cursor -- one a producer sent with no data -- is still a layer, and its state says what it is in the fields below, as a populated state does. A step off the edge of the data is about the move, not the layer, and its state leaves them out.