You could sort the data you want to index in the order you want it displayed
on the graph.

"ShirleyJL" wrote in message
...
I have 3 points of data for 10 separate firms. I currently have data
plotted
as a line graph, but want to index the graph the following way:

- Firm with lowest data point is index "1"
- All other lines for other firms are a factor of that line "1"