Daniel@0: /**
Daniel@0:  * centroid function in vega expression
Daniel@0:  */
Daniel@0: if (vg && false) { // see https://github.com/vega/vega/issues/385
Daniel@0: 
Daniel@0:     vg.parse.expr.codegen.functions["myFunction"] = function(args) {
Daniel@0:         var a = args.map(vg.parse.expr.codegen);
Daniel@0:         return 'window.myFunction('+a[0]+')';
Daniel@0:     }
Daniel@0: } else {
Daniel@0:     //console.error("Can't register centroid function in vega expression");
Daniel@0: }