Function
As Figure 1
shows, specifying the X (or Y) value in the dialog
box shows the corresponding Y (or X) value both in
the dialog box and on the chart itself. The
values are shown both in their raw (user entered or
computed) form and in the format of the appropriate
chart axis.
If the chart has multiple
XY Scatter charts, select the series of interest
with the drop down box on the right side of the
dialog box.
If used with a combination
chart, especially with secondary (Y or X or both)
axis, the graphical display may be confusing and/or
unreliable.
The add-in uses piecewise
linear interpolation to calculate the value of
interest. If it encounters an error, the error
description is shown instead of the numerical
result.
The add-in adds two series
to show the graphical results as shown in the blue
and brown dotted lines in Figure 1. Closing
the dialog box deletes both the extra series.
There is no additional
help available for this add-in.

Figure 1
Installation and Use
To install it, and for
installation troubleshooting see
this guide.
Once installed, when a chart is selected, you will
see a TM menu.
Select it to see, and select, the
Interactive Chart Display...
menu item (see Figure 2).

Figure 2