Dear S-users,
I'm trying to plot state-level data using the map() function. My data has
two types of missing values. I would like to plot the map with valid data
shaded according to a variable (got that far) and have a way of
discriminating between the two categories of missing values. Ideally, I
would like then crosshatched in opposite directions.
I use Splus on a Unix solaris machine, version 6. When I make the plot
interactively, missing values specified as negative integers are plotted
in a dot pattern. When I use postscript() ...dev.off() the resulting file
is shaded. I have tried java.graph to create jpg files and bmp files, but
they do not plot negative values in any pattern or color.
Does anyone know how to accomplish this, or have suggestions?
Thank-you,
Paul
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