In regular scatter, you don't need to specify a line width to get default width 1 for open symbols:
Plotly.newPlot(gd,[{
y: [1, 2, 3],
marker: {symbol: 'circle-open', size: 20},
type: 'scatter',
mode: 'markers'
}], {width:400, height:400})
But change this to type: 'scattergl' and the markers disappear until you put an explicit line: {width: 1} in marker.
Note that this is independent of the marker.line.width in gd._fullData, which is still 0 in the scatter example above. This means supplyDefaults doesn't need to care about marker.symbol, and importantly, if marker.symbol is an array, you can use closed symbols (with no line width) alongside open symbols (with default line width 1) without explicitly saying this is what you're doing.
cc @dfcreative @VeraZab
In regular scatter, you don't need to specify a line width to get default width 1 for open symbols:
But change this to
type: 'scattergl'and the markers disappear until you put an explicitline: {width: 1}inmarker.Note that this is independent of the
marker.line.widthingd._fullData, which is still0in thescatterexample above. This meanssupplyDefaultsdoesn't need to care aboutmarker.symbol, and importantly, ifmarker.symbolis an array, you can use closed symbols (with no line width) alongside open symbols (with default line width 1) without explicitly saying this is what you're doing.cc @dfcreative @VeraZab