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GEPS 030: New Visualization Techniques

1,122 bytes added, 05:07, 31 January 2017
Implement the charting method used in Gene program
[[Existing_reports#Gene|Gene]]: The example is a descendant chart, but other charts are also part of Gene, see [http://www.ics.uci.edu/~eppstein/gene/UserGuide.html#trees here]. This is the most space efficient method I have seen - it has the clearest charts with the least amount of white space. Implementing it may rely on getting information from [http://www.ics.uci.edu/~eppstein/ David Eppstein], though there is quite a lot on his website about his research on graph drawing techniques. I have tried to contact him to see whether he would share the code of his algorithms, but he has never replied - perhaps someone who has academic contacts could try to connect with him again.
 
===Gene===
The figure below shows an example of a Descendants charts that can be produced from the shareware [http://www.ics.uci.edu/~eppstein/gene/ Gene] program (which runs on the 'classic' Mac OS). The original output is designed (in this case) for A4 landscape printing, so the whole chart fits across the page, and would probably cover two pages downwards. (The print mechanism cleverly prints right to the top and bottom of the printable area, so there is no wasted space, and the bottom of the print is not lost over the unprintable area). The application can produce ancestor or descendant charts. There are option for the amount of information shown for the people, and the page layout can either be landscape or portrait.
 
This chart is noteworthy because the application very cleverly lays out the chart so that it is very compact but still shows each generation on the same level. I have not seen such a compact and clear layout in any other application.
 
The chart is of the British royal family starting from King George V; the GEDCOM is available on the net as royal92.ged
[[Image:Desc of George V.gif]]
== The Gene-Tree ==

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