= element_text(hjust = 0.5))+ggtitle(&quot;Stage C&quot;)+
    scale_color_manual(labels=l$n,values=colors)

C4&lt;-ggdraw(A)#+draw_plot(B,.5,.2,.4,.4)</code></pre>
<pre class="r"><code>x&lt;-plot_grid(C1,C2,C3,C4,nrow=2)

r&lt;-plot_grid(C,x,rel_widths=c(1,2))
r</code></pre>
<p><img src="figure/figS22_liver.Rmd/all_ROCs-1.png" width="1536" style="display: block; margin: auto;" /></p>
<p>
<button type="button" class="btn btn-default btn-xs btn-workflowr btn-workflowr-fig" data-toggle="collapse" data-target=