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Re: W3C Member Validity Heatmap

From: Bjoern Hoehrmann <derhoermi@gmx.net>
Date: Wed, 05 Jan 2005 03:40:10 +0100
To: www-archive@w3.org
Message-ID: <41e151a4.54309500@smtp.bjoern.hoehrmann.de>
* Karl Dubost wrote:
>Could you reduce the black vertical space between square to 1px then it 
>will be easier to see the data and the colors :) I guess the black 
>makes it darker. for the green try something like #CF0;
>
>Tell me if it's better or worse?

The 1px spacing seems difficult using the 'heatmap' prefab that ships
with ploticus (http://ploticus.sf.net), I've used

  % pl -prefab heatmap delim=tab data=stdin x=1 y=2 ycats=yes \
  contentfield=3 rectangle="4 1 10 50" symbol="shape=square \
  radius=0.069" colorlist=black,black,xrgb(800000),xrgb(505050),\
  xrgb(bbbbbb),xrgb(ccff00) xcats=yes -png -pagesize 100,100

on the result of `perl pl-prep.pl < w3c-member-validity-data.tsv`
(where the Perl script does some grouping and sorting). I think more
sophisticated visualization would require writing a new ploitucs
script. I don't think the different spacing and color make it much
better...
-- 
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heatmap.png
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Received on Wednesday, 5 January 2005 02:40:31 GMT

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