[R] get plot axis rounding method

Sarah Goslee sarah.goslee at gmail.com
Fri Apr 27 17:03:07 CEST 2012

The help for axis() talks about it some, and provides the suggestion
to see ?pretty - since you're not looking for a regular sequence of
numbers, you may need to dig into the code itself. Or something in
?axis may offer the clue you need.

But surely it's more appropriate to use the correct number of
significant figures for those data than it is to simply make them
match the axis labels?


On Fri, Apr 27, 2012 at 10:55 AM, Ben quant <ccquant at gmail.com> wrote:
> Hello,
> Does anyone know how to get the rounding method used for the axis tick
> numbers/values in plot()?
> I'm using mtext() to plot the values used to plot vertical and horizontal
> lines (using abline()) and I'd like these vertical and horizontal line
> values to be rounded like the axis tick values are rounded.
> In other words, I want numbers plotted with mtext() to be rounded in the
> same fashion as the axis values given by default by plot().
> thank you very much for your help!
> ben

Sarah Goslee

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