Hi Bert,

I am indeed creating a mathematical expression, but ?plotmath doesn't cover how 
to do such a vectorized substitution.

Best,
Wolfgang

-----Original Message-----
From: Bert Gunter [mailto:bgunter.4...@gmail.com] 
Sent: Tuesday, 26 March, 2019 15:52
To: Viechtbauer, Wolfgang (SP)
Cc: r-help mailing list
Subject: Re: [R] Substitution in expressions

I believe you're going about this the wrong way. You seem to want mathematical 
expressions. Fot this, see ?plotmath.

Cheers,
Bert

Bert Gunter

"The trouble with having an open mind is that people keep coming along and 
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )

On Tue, Mar 26, 2019 at 6:28 AM Viechtbauer, Wolfgang (SP) 
<wolfgang.viechtba...@maastrichtuniversity.nl> wrote:
Hi All,

I am trying to create a vector of expressions, where the elements in the 
expressions are contained in other vectors (i.e., they should be substituted). 
I made some attempts with substitute() and bquote(), but couldn't get this to 
work. My solution so far is:

base <- 1:5
expo <- c(2,2,3,3,4)
exvec <- as.expression(unname(mapply(function(x,y) bquote(.(x)^.(y)), base, 
expo)))

plot(NA, NA, xlim=c(0,6), ylim=c(0,2))
text(1:5, 1, exvec)

Any ideas how I could get this to work with substitute() and/or bquote()?

Best,
Wolfgang
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