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Hyperspec package: need to change spectra names in a stacked plot

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Roberto

Hyperspec package: need to change spectra names in a stacked plot

Hi all,
I need to insert the name of spectra in a stacked plot obtained with hyperspec.

I use this command
plot(spectra [c(-1:-4, -6:-8, -10:-12, -14:-16)], stacked = T)

but, in this way R draw nameless spectra on the Y axis.

How can I solve the problem?

Thank you for any suggestion.
Best regards,
Roberto

Peter Ehlers

Re: Hyperspec package: need to change spectra names in a stacked plot

On 2012-04-27 13:24, Roberto wrote:

> Hi all,
> I need to insert the name of spectra in a stacked plot obtained with
> hyperspec.
>
> I use this command
> plot(spectra [c(-1:-4, -6:-8, -10:-12, -14:-16)], stacked = T)
>
> but, in this way R draw nameless spectra on the Y axis.
>
> How can I solve the problem?

Your code is not reproducible. (And do use TRUE instead of T; sooner
or later it *will* bite you.)

I think that you might be able to accomplish what I think you
want by setting the argument axis.args, e.g.

plot(x, stacked=TRUE,
axis.args = list(y = list(c("apple", "banana", ....))))

Peter Ehlers

>
> Thank you for any suggestion.
> Best regards,
> Roberto

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beleites,claudia

Re: Hyperspec package: need to change spectra names in a stacked plot

Ciao Roberto,

welcome to hyperSpec!

1. reproducible example
You can use the example data sets coming with hyperSpec to create examples that everyone can easily reproduce.

2. there's a hyperSpec-help mailing list which you may want to join.
You can subscribe at
http://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/hyperspec-help
It'S VERY low traffic (few emails / month)

3. stacked spectra with name
Instead of stacked = TRUE, give a factor to define the stacking. In that case, the levels will be used as labels. There's an example in hyperSpec's "plotting" vignette (bottom of p. 9 in the most current version at http://hyperspec.r-forge.r-project.org/plotting.pdf).

You'll probably want to adjust margin width and axis label rotation, see ?par.

Best,

Claudia

________________________________________
Von: [hidden email] [[hidden email]] im Auftrag von Peter Ehlers [[hidden email]]
Gesendet: Samstag, 28. April 2012 19:47
An: Roberto
Cc: [hidden email]
Betreff: Re: [R] Hyperspec package: need to change spectra names in a stacked plot

On 2012-04-27 13:24, Roberto wrote: