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Chart Overlay

Can I display several charts on the same graph?

FertilityFriend.com's Chart Overlay feature provides a powerful way to visualize your temperature patterns and compare them from cycle to cycle.

Access

Tap the Analysis tab and the select Chart Overlay. You can also use the Overlay button above the chart.

Usage

You will then be able to select which cycles to overlay and how to pin them together to allow you to view pattern similarities or differences:

Screen Shot

Pin your charts to show similarities or differences:

You can pin your charts according to:

Average Curve:

The chart overlay feature is able to display an average of the selected charts. You can opt to display the average curve in addition to the selected curves or you can display the average and only the most recent chart. In the latter case, the average is calculated on all but the most recent curve. This allows you to see the differences and similarities between the most recent selected curve and the average of the older curves.

Sign Display

You can pick one sign to display a frequency histogram along with your overlay. A bar is displayed to represent the number of times that this sign is present on the corresponding days among the selected charts.

Additionally you can see at the bottom of the graph a stacked representation of the sign occurrences for each chart (one chart per line) color coded with the chart BBT graph color.

Display your chart overlay on your home page:

The "Show On Home Page"/"Update Home Page" button configures your current overlay to be shown on your charting home page. You can then use your charting home page to show your overlay to your friends or your health care provider. The overlay is automatically updated as your data changes.

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