hi alan,

i think i'm missing something. i was able to inject additional data points and use the path geom to create a contiguous line that was stepped, mimicking the graph in the first link.

however, is it possible to create a non-contiguous line? this would be something like the graph in the second link. Maybe I misunderstand your post, but the only way I can see to accomplish a non-contiguous line is to append one layer per segment. it would be something like:

for each data point {

   //add one layer w/ a Path Geom.
    plot.addLayer(new LABKEY.vis.Layer({
      geom: new LABKEY.vis.Geom.Path(...),
      aes: {
           y: function(row){
               //this would return a value if we expect to draw the segment, and null if not.
           }
      }

}

is there a better pattern to follow?