From: Duncan Murdoch <murdoch_at_stats.uwo.ca>

Date: Tue, 19 Feb 2008 18:15:37 -0500

*>
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> Thanks for the explanation Mark.

*>
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*> If integers are being recast as doubles R is ignoring/overriding the user's
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*> choice of data-type. There may be good reasons for doing that internally
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*> (uniformity, code re-use etc) , but it is not what I'd expect as an end-user
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*> --- neither ?plot nor ?xy.coords seem to mention that coordinates need to be
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*> floating point numbers.
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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Tue 19 Feb 2008 - 23:26:43 GMT

Date: Tue, 19 Feb 2008 18:15:37 -0500

On 19/02/2008 5:40 PM, Stiffler wrote:

*>
**>
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> Mark Difford wrote:

>>>> I was wondering why the plot() command ignores the datatype when >>>> displaying axis labels... >> plot() doesn't ignore the datatype: >> [...] >> plot(x,y) calls xy.coords(), which recasts x as: x = as.double(x), which >> is fine, since x is (also/primarily) numeric. >> >> HTH, Mark. >> >>

> Thanks for the explanation Mark.

They don't need to be floating point numbers, they are converted if not.

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