Scientific notation as LaTeX/expression()

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Description

Takes a number and returns a version formatted in LaTeX (suitable for use with Sexpr() in an Sweave document) or in expression() (suitable for plotting), or plots an axis with labels in scientific notation

Usage

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scinot(x, format = c("latex", "expression"), delim="$",
pref="", ...)
axis.scinot(side,at)

Arguments

x

a numeric vector (of length 1)

format

produce LaTeX or expression() format?

delim

delimiter to add at beginning and end (latex only)

pref

text to put before expression (expression only)

side

side on which to plot axis

at

list of locations/labels

...

additional arguments to formatC

Value

a character vector (if latex) or expression (if expression); axis.scinot draws an axis on the current plot

Author(s)

Ben Bolker

See Also

formatC, expression, plotmath, axis, axTicks, latexSN in the Hmisc package, eaxis in the sfsmisc package

Examples

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scinot(1e-5)
scinot(1e-5,digits=0)
scinot(1e-5,"expression")
scinot(1e-5,"expression",pref="p=")
set.seed(1001)
plot(1:100,rlnorm(100,0,2),log="y",axes=FALSE)
axis(side=1)
axis.scinot(side=2)  ## fix bug!

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