Mouse drag-and-drop doesn't work normally for laptops with touch screens

[nschneid]

Several of my students encountered this with Georgetown's installation of Arborator. They had to resort to a workaround of touching at the starting point and the ending point to form the edge. One student suggested that it may be due to an outdated version of the raphael library. (I myself don't have a laptop with a touch screen.)

[kimgerdes]

i don't have a touchscreen to test that but we are working on completely redoing the visualization based on d3.js
you can see a very fast visualizer on https://arborator.github.io/live.html but the editing is not installed yet.
should be done soon...