Community Analysis Package
each predefined group. Click on the Perimeter button to display a menu that
enables you to choose which group(s) you wish to outline. Select your menu item
to encircle that group in a line of the same colour as the data points for the group.
Note this line is dynamically created and will need to be refreshed if any changes
are made to the plot, such as changing the colour of the data points. This option
is not available in 3D plotting.
If you have performed a PCA on an ungrouped data set and, on inspection of the
plot you decide that a group exists that you wish to emphasize, e.g. for
publication, then it will be necessary to scrutinize the plot to identify and take note
of all the samples that you wish to encircle. Go to the group
assign those samples to a group and then re run the PCA. Set data point colours
as preferred and then refresh the perimeter line.
zooming and panning
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