Ive plotted a scatter plot with x, y variables, and added information
about a 3rd variable, z, by varying the symbol size. Its a continuous
variable, so the typical method for inserting a legend to detail the
symbol size doesnt work (all examples Ive found in the Online Programmers
manual, Users manual, and menu interface work only when this 3rd variable
is categorical). I could label a few of the data points, but Id like to
indicate how the symbol size varies through a legend. Is it possible to
force the legend to plot a representative symbol for 3 values (e.g. 10,
100, 1000) in order to provide a scale? Is it possible to create a legend
for this scenario at all?
(Im using Splus 6.1).
Thanks in advance for your help.
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(Please reply to N.Golubiewski@massey.ac.nz)
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