Code pen: [(https://codepen.io/curtisratzlaff/pen/GRzjMyK)](https://codepen.io/curtisratzlaff/pen/GRzjMyK) The marker is missing from the legend:  The console outputs this error:  Searching the the html for nan I find this:  A couple of things that will make this problem go away. - If you remove the marker.angle array from the trace definition. - If you only provide a single value in the array. - If you specify "circle" in the marker.symbol. - If you change the trace type to scatter. Let me know if I can provide any more information.