The graph describes the long-short ratio for several equity sectors. The graph shows trends 
over time for the bank, real estate, vehicles & parts, and durable goods & clothing industries. 
Over time, the ratio has increased for all industries.
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);