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Re: How to build a Tag Cloud Graph?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg98631] Re: How to build a Tag Cloud Graph?
  • From: Albert Retey <awnl at gmx-topmail.de>
  • Date: Wed, 15 Apr 2009 04:57:01 -0400 (EDT)
  • References: <gruq3m$12t$1@smc.vnet.net>

LectorZ wrote:
> Dear experts,
> 
> Let say, I have a simple list of sales numbers in different products.
> The first element of the sublist is a product, the second is a product
> group and the 3rd is the turnover. Like this one:
> 
> sales={{Beef,Meat, 2343},{Milk,Drink, 234}, {Water,Drink, 234}, {Beer,
> Drink, 1546}, {Coke, Drink, 1223}, {Pork, Meat, 1223}}
> 
> QUESTION:
> How to construct a Tag Cloud Plot in the way as it defined in
> wikipedia:
> 
> "...Tags are usually single words and are typically listed
> alphabetically, and the importance of a tag is shown with font size or
> color..."
> 
> For full details see:
> http://en.wikipedia.org/wiki/Tag_cloud
> 
> It should be a frame with words in alphabetical order with different
> font color for different product group.
> 
> Condition:
> For displaying products with huge and very small numbers a maximum and
> minimum font size should apply.
> 
> Many thanks!
> 
> Plotty
> 
Something like this?

color[___] = Black;
color[Drink] = Blue;
color[Meat] = Pink;
maxfont = 100;
minfont = 10;
Panel[Row[Apply[
   Tooltip[
     Style[#1, "FontFamily" -> "Helvetica",
      "FontSize" -> Max[maxfont*#3/Max[sales[[All, 3]]], minfont],
      "FontColor" -> color[#2]
      ],
     #3
     ] &,
   SortBy[sales, First],
   {1}
   ],
  Spacer[5]
  ]
 ]

of course you might want to use something smarter for the font sizes,
but that would need more information about what you want to read from
that tag cloud...

albert


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