[R] referencing last row in a column

[fugelpitch]

Sorry, but now I understand what you're doing, and it works as a stand-alone
in the console! :)

But why doesn't it work in the xlim?

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> pheno.dt$year[1]
[1] 1877

> pheno.dt$year[nrow(pheno.dt)]
[1] 1916

> plot(x,y, xlim = c(pheno.dt$year[1]:pheno.dt$year[nrow(pheno.dt)]), ylim =
> 50:150, xlab = "Year", ylab = "Julian Day")
Error in plot.window(...) : invalid 'xlim' value
Calls: plot -> plot.default -> localWindow -> plot.window
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