[R] strange behavior of plotmath

[Rui Barradas]

Try

plot(1:10, xlab = expression(NO[3]^{'-'}~(mg/L)))

Hope this helps,

Rui Barradas

On 5/21/2018 1:09 PM, Jinsong Zhao wrote:
> hi there,
> 
> I find the following codes produce strange output.
> 
> plot(1:10, xlab = expression(NO[3]^-~(mg/L)))
> 
> you will notice that the unit, mg/L is in superscript format.
> That means that "~" is not for space.
> However, the help page of plotmath does not mention this behavior.
> 
> Best,
> Jinsong
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