var global = require('../globals');

var groupdef = require('group').def;

module.exports = subfaceting;

function subfaceting(group, mdef, details, stack, encoding) {
  var m = group.marks,
    g = groupdef("subfacet", {marks: m});

  group.marks = [g];
  g.from = mdef.from;
  delete mdef.from;

  //TODO test LOD -- we should support stack / line without color (LOD) field
  var trans = (g.from.transform || (g.from.transform = []));
  trans.unshift({type: "facet", keys: details});

  if (stack && encoding.has(COLOR)) {
    trans.unshift({type: "sort", by: encoding.field(COLOR)});
  }
}
@@ -54,16 +54,18 @@
 equire('
+./
 group').

fix group path