Hi,

Add an extra series to the chart. This only needs a single x and y
value. Change the series to plot a data marker with no line. Use the X
and Y error bars of the new series to make connecting lines from the
point to the axes.

Cheers
Andy

rvExcelNewTip wrote:
> I have a scatter chart with smooted lines and no data markers that
> represents a (one) mathematical function. Is it possible to highlight
> (mark) one data point and from that point draw parallel (dashed) lines
> to the x and y axes?
>
> By hovering over the chart you can pop up the data values but I want
> (if possible) the parrallel lines to better visualize the position of
> the selected point on the axes.
>
>

--

Andy Pope, Microsoft MVP - Excel
http://www.andypope.info