Mekko (or Marimekko) charts are full stacked column charts in which the width of each column has been also proportionally adjusted and normalized to fill the whole 100% wide area. Mekko charts look like a mosaic of tiles.
Our Global Sales demo charts show the percent of total product quantities sold in each country (US, France or UK) in 2007, 2008 and 2009. Each country gets its own color. Each year's percent values are piled one in top of each other, in a vertical column with the same 100% height. But they are also adjusted and normalized on the X axis, to fill the whole grid area.