R help - Jun 2015 - Greek letters with subscript numbers on x-axis

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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You can use
   labels=as.expression(lapply(1:9, function(i)bquote(hat(lambda)[.(i)])))

Bill Dunlap
TIBCO Software
wdunlap tibco.com

On Wed, Jun 3, 2015 at 12:39 PM, Frank S. <f_j_rod at hotmail.com> wrote:
> 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.
>         [[alternative HTML version deleted]]
>
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>
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Thank you very much Bill,
 
Your answer to my question is exactly what I was trying to do in my R code.
 
Best regards.
 		 	   		  
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