Re: Jittering interval and ordinal variables in graphs. was "What does this graph means?"

Posted by Ian Martin-2 on Jan 30, 2013; 4:19pm
URL: http://spssx-discussion.165.s1.nabble.com/What-does-this-graph-means-tp5717745p5717822.html

I find it interesting, and a bit ironic, that in 1995 SYSTAT could do jittering of overlapping points, and do CI for the data, or for the mean, at various % values, and do bivariate jittered point confidence ellipses for both mean and data.

And then SPSS bought SYSTAT and failed to incorporate all these useful features, despite suggestions to do so.

cheers,
Ian

Ian D. Martin, Ph.D.

Tsuji Laboratory
University of Waterloo
Dept. of Environment & Resource Studies


On Jan 30, 2013, at 10:57 AM, Andy W wrote:

> Unfortunately the authors don't disclose how the plots were made. Given the
> odd arc-like regular displacement I highly suspect they used the beeswarm R
> package to create the plots (see http://www.cbs.dtu.dk/~eklund/beeswarm/).
>
> This particular displacement of the points is not easily accomplished in
> SPSS, but a suitable alternative is to use symmetric dodging. My example
> could be simplified, but the nuts and bolts of the logic I present in a blog
> post titled Avoid Dynamite Plots! Visualizing dot plots with super-imposed
> confidence intervals in SPSS and R
> (http://andrewpwheeler.wordpress.com/2012/02/20/avoid-dynamite-plots-visualizing-dot-plots-with-super-imposed-confidence-intervals-in-spss-and-r/).
>
> Thanks for giving the reference to "reference ranges"! It is good to know
> the difference in lingo between fields.
>
>
>
> -----
> Andy W
> [hidden email]
> http://andrewpwheeler.wordpress.com/
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