Function formatDiscrete

docs/app/js/sanddance-app.js:127260–127260

(format4)

    };
const get = (value, dflt)=>value != null ? value : dflt;
const formatDiscrete = (format4)=>(value, index)=>index ? format4(value) : null;
const formatPoint = (format5)=>(value)=>format5(value);
const formatValue = (value, format6)=>Number.isFinite(value) ? format6(value) : null;
function labelFraction(scale17) {