[R] Visualize quartiles of plot line

[Mark Difford]

Hi Arne,

You might also take a look at Prof. Harrell's function:

require(Hmisc)             ## req. library [note: also needs lattice]
?smedian.hilow

Then look at:

?xYplot

And, in particular, at: panel.xYplot(), sub "Usage:"

This does what you want.

## Example; also look at Prof Harrell's examples
xYplot(Murder ~ UrbanPop, data=USArrests, method='quantiles')

HTH, Regards,
Mark.



Arne Brutschy-2 wrote:
> 
> Hello,
> 
> I'm currently using a simple plot to visualize some mean values. I'm
> having ~200 datapoints on the x-axis, each has 10 records. I'm
> currently plotting only the mean value of each of the datapoints.
> 
> What I need is a way to visualize the quartiles/error/whatever of
> these points. I thought about boxplots, but I have to many points on
> the xaxis - it would be impossible to see anything. I though that it
> would be nice to have a "hull" around each line, indicate the width of
> the quartiles, visualized by a different background. It's like a very
> wide boxplot with a changing mean value...
> 
> Is this possible with r? Does anyone know what I mean and/or has done
> this before?
> 
> Thanks
> Arne
> 
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