How to create Forest plots (odds ration plots) in Keynote '09?

Question

Hello,
I am trying to convert to Keynote from PowerPoint and I was wondering how to create odds ratio plots without drawing them out. These are plots of an odds ratio and its 95% confidence interval.
In PowerPoint, one creates a line chart, removes the lines leaving the data points, and then adds high-low bars for each data point. Easy.
How do I do this in iWork/Keynote?
Thanks for any help.
Sunil

Answer 1

A line chart is a "Category" chart.
One axis, usually the 'x' axis, is a Category axis. The category axis does not show numerical values (even if the values are numbers, they are simply text that names each category). Categories are evenly spaced along this axis. Labels for the categories must be placed into a Header Column.
Values shown on the Value axis (usually the 'y' axis) are numerical.
Here are two examples of the same data, presented first as a scatter chart with the data points connected by line segnments, then as a line graph.
Note the differences in organization of the table, and the differences in spacing along the x axis.
Scatter chart:
All data in 'body' cells. Series labels in Header row. Note the shape of the line for Data series B (Green) and C (Yellow).
Line Chart:
Category labels in a Header column (Column A), Data series labels in a Header Row (Row 1). The 'numbers ' in column A are seen as text, and a regularly spaced along the x axis.
Data series in regular cells (B2:D8) Only the data cells are selected when making the chart.
Note the shapes of the lines for data series B (Green) and C (Yellow).
For your setup, you would need to place the 'x' values into a Header column. The Y values in columns Y, Z and AA could stay in those columns.
You would select only columns Y, Z and AA, then make the Line chart, as I've done in the example below after inserting some new columns to the left of that data.
Regards,
Barry