On 15.11.2012 10:52, Gabor Grothendieck wrote:
On Wed, Nov 14, 2012 at 12:05 PM, Murat Tasan <mmu...@gmail.com> wrote:
hi all - i've seen versions of this question before, but none seem to get
directly at my solving my (probably very simple) issue:
i simply want to annotate the tick marks on an axis with (superscripted)
10^x notation, and tried this:
axis(1, at = axTicks(1), as.expression(substitute(10^foo, list(foo =
axTicks(1))))
thinking the as.expression/substitute would create the appropriate
expression vector from the expansion of the foo vector.
i'm continually stuck in the error process, however, with axis() where R
complains that i've only provided a single label.
i must be missing a function that explicitly "unfolds"(?) the result of the
substitute() call, without actually evaluating the contents of that call?
sorry in advance if this is clear in the docs somewhere, though i just
can't seem to locate it :-/
See
library(sfsmisc)
?eaxis
Or to answer the original question, without an extra package we could
simply:
plot(1, xaxt="n")
axis(1, at=axTicks(1), as.expression(lapply(axTicks(1), function(x)
substitute(10^foo, list(foo=x)))))
Uwe Ligges
--
Statistics & Software Consulting
GKX Group, GKX Associates Inc.
tel: 1-877-GKX-GROUP
email: ggrothendieck at gmail.com
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