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<p class=MsoNormal><span style='font-family:Consolas'>Hello,<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>I currently have a map
that looks something like this:<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>-----------------------------------------<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>|&nbsp;&nbsp;
x&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; x &nbsp;&nbsp;&nbsp;o&nbsp;&nbsp;
x&nbsp;&nbsp;&nbsp; o&nbsp;&nbsp;&nbsp;&nbsp; x&nbsp;&nbsp; |<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>|&nbsp;
x&nbsp;&nbsp;&nbsp;&nbsp; x&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
x&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; x&nbsp;&nbsp;&nbsp;&nbsp; a o&nbsp; a |<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; x&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
o&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; o&nbsp;&nbsp;&nbsp; x&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>|&nbsp;
x&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; x&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; o&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
o&nbsp;&nbsp;&nbsp;&nbsp; o&nbsp;&nbsp; &nbsp;&nbsp;a&nbsp; |<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>|&nbsp; x&nbsp;
x&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; x&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
o&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; a&nbsp;&nbsp; o&nbsp;&nbsp; a&nbsp; o|<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>|&nbsp; x&nbsp;&nbsp;&nbsp;&nbsp;
x&nbsp;&nbsp;&nbsp;&nbsp; o&nbsp;&nbsp; x&nbsp; o&nbsp;&nbsp; x&nbsp;&nbsp;
a&nbsp; a&nbsp;&nbsp;&nbsp; a |<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>| x&nbsp;&nbsp; x&nbsp;&nbsp;&nbsp;
o&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;o &nbsp;&nbsp;&nbsp;&nbsp;a&nbsp;&nbsp;
a&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; a&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>-----------------------------------------<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>&nbsp;&nbsp; &nbsp;<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>x = low risk<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>o = moderate risk<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>a = high risk<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>Each letter represents a
person, and the entire map represents a state. Each person&#8217;s &#8220;risk
score&#8221; is a continuous numeric value, but I have categorized it into low,
moderate, and high for visual simplicity. What I&#8217;m hoping to do is draw
lines that will divide out the categories. The lines do not have to necessarily
be straight, but I would like them to be simple enough. I figure that I would
have to account for any overlapping or outlying persons. This is my initial
idea of how the map would turn out:<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>-----------------------------------------<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;/&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
/ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;|<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
/&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;|<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
x &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/&nbsp;&nbsp;&nbsp;&nbsp; o&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
/&nbsp;&nbsp;&nbsp; a&nbsp;&nbsp; |<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
/&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
/&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
/&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;/&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
/&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; |<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>-----------------------------------------&nbsp;&nbsp;&nbsp;
<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>I have downloaded and
installed GRASS and R, but I am not sure what type of spatial method or
analysis to use. Could someone please offer me advice on how to get started
with this project? Thanks so much!<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><b><span style='font-family:Consolas'>------------------------------------------------------</span></b><span
style='font-family:Consolas'><o:p></o:p></span></p>

<p class=MsoNormal><b><span style='font-size:14.0pt;font-family:Consolas'>Arthur
Hintermeister</span></b><span style='font-size:14.0pt;font-family:Consolas'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'><a
href="mailto:ahintermeister@amica.com"><span style='color:blue'>ahintermeister@amica.com</span></a><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'>&nbsp;<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:Consolas'><o:p>&nbsp;</o:p></span></p>

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