I see several modules of VBA coding on the internet that may do the business,
but the suggestion that best matches my preferred way of working would be to
"use dynamic named ranges ... for the category and value axes. The ranges
would recalculate based on two cells that specify the offset (start position)
and number of entries (zoom) to be displayed. Those cells could in turn be
controlled by sliders from the Forms or Controls toolbar"

I will try this out, and it sounds like a good idea for an add-in or a tool
in the data analysis area.

"Jonathan589" wrote:

XL2003. One of my users has graphed a long time-series of readings (14000
rows at the moment) and would like a way to scroll or zoom into the plot area
to see details. One can change the range viewed or plotted, or the scales to
get the same effect, but that's not very user-friendly when hopping from one
interesting-looking bit to another. Any suggestions?