Hi everyone, I have allocated greek letters with subscript numbers on x-axis of 
my R plot this way:
 plot(10:18, 30:38, lwd=2, xlim=c(10,18), ylim=c(30,38),  xaxt="n",  
xlab="weights", ylab="value")
points(10:18, 30:38, pch=19)
axis(1, at=10:18, labels=c(expression(hat(lambda)[1]), 
expression(hat(lambda)[2]), expression(hat(lambda)[3]),
      
expression(hat(lambda)[4]),expression(hat(lambda)[5]),expression(hat(lambda)[6]),
      
expression(hat(lambda)[7]),expression(hat(lambda)[8]),expression(hat(lambda)[9])),
  padj = 0.25) However, as you see in the last lines, it's not an efficient 
code. I think it could be done more efficiently with a loop. I've searched 
about this question and I've found some very similar question, but the given 
answer does not work (with do.call and lapply). Maybe another functions like 
substitute or parse. Does anybody can help me? Thanks a bunch!! Frank S.        
                                 
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