in src/visual.ts [290:303]
private scale1to10(value: number): number {
let scale: d3.scale.Linear<number, number> = d3.scale.linear()
.domain([
this.data.minFiles,
this.data.maxFiles
])
.rangeRound([
ForceGraph.MinRangeValue,
ForceGraph.MaxRangeValue
])
.clamp(true);
return scale(value);
}