The File | Reload Data or Graph Tools | Worksheet | Reload command is used to apply changes to a graph when changes to the data are made in programs other than Grapher. For example, if you have a data file open in Excel and make changes to the data file, you can use the Graph Tools | Worksheet | Reload command to display the changes in the graph.
To show changes in a graph when data is edited in another program:
Make changes to the data in a program other than Grapher.
Save the changes in the other program. If you do not save the changes, they will not appear in the graph.
Click the File | Reload Data or Graph Tools | Worksheet | Reload command.
If you are editing your data in the Grapher worksheet, use Auto Track Worksheets, not Reload. If you make changes in the Grapher worksheet and do not save the changes, using the Graphs | Worksheet | Reload command removes the data changes.
Auto Track Worksheets