This thread will be about playing by numbers using the Nashville system for chords and melodies. The whole point of this is to understand the functional relationship between chords and melodies. Western civilization ears have been programed since childhood to respond emotionally in distinct ways to combinations of notes.
So first up to continue from a post started by Jerry here's some info regarding double stops. This is as easy as it gets to begin with by concentrating in one small area, hopfully beginners will be able to catch on to this.
As Henry said: 135 harmonizes the I chord hence the 31chop 146 harmonizes the IV chord hence the 41chop 2457 harmonizes the V7 chord hence the 47 chop (this information is at the top of the master chart)
The master chart shows the location of the steps of the scale for all 12 keys. It's a matter of eye placement not finger placement. Let's say we're in the key of D and we all know that we have a D string open on the fiddle. That D is on the 3rd string so we go to the chart and look up and down on the 3rd string for a 1. Once we find that number we visualize it as open in our mind and anything above it on the chart is disregarded. Notice the letter D hanging out to the left at that spot, that's what tells us that those pitches directly to the right are open. Here's a screen shot of what we should be visualizing. BTW we must also disregard all the other key markers, letters, on the left.