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jiang
2011 Feb 10
1
Add different types of legend: line and points
...cannot be " ".
Error in segments(x1, y1, x2, y2, ...) : invalid line type: must be length
2, 4, 6 or 8
Can anyone help me out? Thank you.
Shiguo
--
Department of Geography
The Ohio State University
1036 Derby Hall
154 N Oval Mall
Columbus, OH 43210
http://www.geography.osu.edu/grads/sjiang
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