Mark -

A pyramid chart is a horizontal bar chart. A line chart series can be used with a
column chart, because they both plot values vertically and categories horizontally.

You can use an XY chart series, using the bar chart value axis (horizontal) for the
XY series X value axis, and the bar chart category axis (vertical) for the Y values.
The technique is described he

http://peltiertech.com/Excel/Charts/Y_CategoryAxis.html

This page shows several XY series on a horizontal bar chart:

http://peltiertech.com/Excel/Charts/BarLineCombo.html

and in this article I show how to use an XY series to place markers onto a Gantt
chart, which is another horizontal bar chart:

http://peltiertech.com/Excel/Charts/GanttChart.html

- Jon
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Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
_______

Mark wrote:

Hi

I've created a pyramid chart and now wish to add two further data series
that I am attempting to display as lines running vertically to show a
comparator for each bar on my pyramid. It can be achieved by adding a
trendline but when adding additonal data changing to a line chart, the lines
are displayed horizontally on a secondary axis.

Does anyone know of a way of resolving this?

Thanks