[R] Using column length in plot gives error
Dieter Menne
dieter.menne at menne-biomed.de
Sun May 17 09:47:34 CEST 2009
MikSmith <mike <at> hsm.org.uk> writes:
> I'm trying to write a generic script for processing some data which finishes
> off with some plots. Given Im never sure how many columns will be in my
> dataframe I wanted to using the following
>
> plot(spectra.wavelength, cormat, type = "l", ylim=c(-1,1), xlab="Wavelength
> (nm)", ylab="Correlation")
>
> however even if I specify as type="l" it appears plot as points (right hand
> plot). If I specify a range such as
>
> plot(650:700, cormat, type = "l", ylim=c(-1,1), xlab="Wavelength (nm)",
> ylab="Correlation")
>
> it looks good (left hand plot). If I try something like:
>
The example is not reproducible so we can only guess. I assume
spectra.wavelength is a matrix, so the matrix x/y values are plotted.
In the second example the first parameter is definitively a vector.
Dieter
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