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IsoSource Help

# Graphing the Histogram Data

Select [Graph] from the menu bar.

Select [File] from the menu bar.

Select a file by clicking on it.

Source graph #1 of 7 is now displayed.
Note that the Y axis is shown as Percent Frequency, rather than the raw frequency counts for each Source Proportion value on the X axis (as in the .TOT file). This was done to standardize the Y axis somewhat since the raw frequency counts can vary over several orders of magnitude between data sets. The Percent Frequency is calculated as 100% times the frequency for a particular Source Proportion value divided by the total frequency (N, the number of solutions found). The Y axis is always scaled in increments of 5%, with the maximum set by the highest Percent Frequency found for any of the sources.

Select the [Next] button to display the graph of the next source.
Notice that the [Next] and [Print] buttons are now active.

Source graph #2 of 7 is now displayed.

Select the [Next] button again to see the graph of the next source.
Notice that the [Previous] button is now active.

Source graph #3 of 7 is now displayed.

To go back to a previously displayed graph select the [Previous] button on the menu bar.

Source graph #2 of 7 is now displayed.