aaxis: Add a Scientific Axis to a Plot

In astro: Astronomy Functions, Tools and Routines

Description

Adds an axis to the current plot.

Usage

aaxis(side = 1, at = NULL, labels = TRUE, majticks = TRUE, 
      minticks = TRUE, nmaj = NULL, nmin = NULL, unlog = FALSE, 
      format = NULL, digits = NULL, las = NULL, mgp = NULL, 
      tcl = NULL, dexcl = 0.2, ...)

Arguments

side	an integer specifying which side of the plot the axis is to be drawn on. The axis is placed as follows: 1=below, 2=left, 3=above and 4=right
at	the points at which the major tick-marks are to be drawn
labels	should axis annotation be added
majticks	should major tick marks be included
minticks	should minor tick marks be included
nmaj	number of major tick marks
nmin	number of minor tick marks between major marks
unlog	unlog axis annotation when the data is logged (base 10)
format	format for axes labelling (see 'formatC')
digits	number of digits for axes labels
las,mgp,tcl	standard 'par' plotting parameters
dexcl	distance from major tick marks within which no minor tick labels should be plotted
...	additional arguments to be passed to 'axis'

Details

The mid-level function 'aaxis' (astro:axis) is a wrapper around the R function 'axis'. It provides significant additional features which trivially allow the creation of figures more suited for a scientific audience. Notably, 'aaxis' allows minor tick-marks and logged axes to be created with the minimum of effort.

Author(s)

Lee Kelvin <[e-mail]>

See Also

The astronomy package: astro.

Examples

par("mar"=c(5.1,4.1,2.1,4.1))
aplot(1:1000, log10(1:1000), unlog="y", type="l", format="p", side=1:3, col="red", lwd=2)
aaxis(4, nmaj=4, nmin=9)
mtext(bquote(paste(log[10]," y ")), side=4, line=2.5)
label("bottomright", txt="astro:axis (aaxis)", cex=2, lwd=0, bgcol=NULL)

Example output

Loading required package: MASS
Loading required package: plotrix
Warning messages:
1: In plot.window(...) : "format" is not a graphical parameter
2: In plot.xy(xy, type, ...) : "format" is not a graphical parameter
3: In title(...) : "format" is not a graphical parameter

astro documentation built on May 2, 2019, 2:14 a.m.