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From |
n j cox <n.j.cox@durham.ac.uk> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: SV: -spineplot- available from SSC |

Date |
Tue, 30 Oct 2007 21:01:20 +0000 |

Thank you for your interest. I can see why you want

to do this, but the idea at first sight is a little problematic.

1. You are correct. My program nowhere computes the centres of the tiles

[which could be oblong, and need not be squares]

-spineplot- creates, as it never needs them.

2. -spineplot- is based on a temporarily reduced dataset.

That means that you would need to carry forward any extra

variables as part of the reduction to be able to use

them for the graph.

3. The problem with superimposing text is that there

is no guarantee that there is space for it to fit nicely

on each tile, as some tiles can be very small, even zero

area. (-tabplot- on SSC is in complete contrast here.)

I can see two easy ways to move forward, at least a little.

4. If you want to add text ad hoc, the graph editor offers

one obvious way.

5. Next time round, I'd add -plot()- and -addplot()- options

for users to superimpose their own extra plots.

Nick

n.j.cox@durham.ac.uk

Peter Jepsen

Thank you, Nick et al. I've got a feature request! I find that I want to add text to some of the squares, preferably in the middle. I was hoping that I could modify the code myself to superimpose a scatterplot with -mlabel(mytextvar)- and -mlabpos(0)- but I can't get the coordinates for the centres of the squares. I can see from the ado-code that the centre on the x-axis ("xmid") is computed, but I don't know how to get the "ymid". So, I kindly as you to consider adding this feature.

n j cox

Thanks to Kit Baum, a -spineplot- package for spine plots

is now available from SSC. Stata 8.2 is required. Use -ssc-

to install.

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