Example datasets for plot gallery

Could somebody tell me where the example data sets in the plot gallery are stored so you can replicate the examples shown?

http://www.mathworks.com/matlabcentral/fileexchange/35274-matlab-plot-gallery-bar-graph-3d/content/html/Bar_Plot_3D.html

When you type them into the command line they cannot be located. Is there are particular folder? I'm using version r2012a

Thank you