US Corporate tax  This graph shows the relationship between the federal tax rates of companies 
based on profit.  However, there does not seem to be a direct correlation of the profit and 
the tax rate.  This is evident in that some companies had a much higher profit than other 
companies, but still managed to pay at a significantly lower federal tax rate.  This may have 
something to do with the type of industry and/or the available write-offs.
Error using .*
Matrix dimensions must agree.

Error in plotSpotlight (line 30)
    output = repmat(a,[1 1 3]).*single(im)/255;

Error in plot_individual_user_maps (line 49)
        [heat] = plotSpotlight(im,heatmap,3);