You can apply the concepts explained at Jon and Andy's sites to your line
> I have a bunch of data series that I want to chart using a line graph with $
> on the y-axis and time on the x-axis. The trouble is that about half of them
> have relatively low y-values (between 0 and $100) whilst the rest have high
> values ($600-$1000).
> My question is: Does anyone know of any way to manipulate the y axis so that
> it ues a scale of, say, $20 for the 0-$100 section, and then "jump" to $600
> (with zig-zag or something on the y-axis to tell the user that the graph is
> non-continuous) and continue the chart there? Otherwise the scale just
> becomes too large or too small to make any sense of trends within these 2
> Many thanks for your help in advance!