Tag cloud: equalize data of tags with a histogram
Created by: fernao
Currently, data of used at tag cloud is varying a lot. Example:
agricultura 2
agrofloresta 3
assentamentos 1
bicicleta 1
bioconstrução 1
bolívia 1
cartilha 2
cerrado 159
comestível 12
culinária 1
documentário 1
medicinal 3
milho 1
palmeira 2
permacultura 5
plantas 26
quilombo 1
sementes 2
The result is a tag cloud not well contrasted; we need to implement a histogram equalization, or a Cumulative Distribution Function - CDF
Should be at interface or API (passed as a optional arg)