Plotting Box Representation of Different Group of Categorical Data

I have a numeric vector, called sizes, and categorical results of 8 different experiments (results not necessary to be same, but should be categorical or string) as follows,

For each result I need to draw boxplot of different categories (A, B, C, D) with different box colours, In addition, all results should be displayed on one figure. Roughly and ugly figure should be like following image. Do you have any suggestion? Cheers,

Answer 1

[Muhammad shahid]

http://shiny.chemgrid.org/boxplotr/ try this.

Answer 2

[Peter Perkins]

If you have access to the Statistics & Machine Learning Toolbox, the box plot function does that and more.