@DavidRutten
If possible, please consider adding a snap function to the Graph Mapper component.
I asked the question days ago and got a solution, but I still think a snappable(is this the right word?) Graph Mapper would make Grasshopper more convenient.
I know you might not touch GH1 in 7 anymore, so I hope it can be realized in GH1 or GH2 in 8.
Thanks!