Hi every body, I need to fix the size of the scale and the bubbles plotted
in function bubble(), I“ve tried with "zlim=c(min(x),max(x))", similar to
function plot(), but it doesn“t work. Does any body know how can I do this?
Thanks in advance.

-- 
Jaime Burbano Girón
Departamento de Ecologķa y Territorio
Pontificia Universidad Javeriana
Bogotį - Colombia
(571) 3208320 Ext. 4836

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