title: R Ioslides Table Of Content and multiple charts in one slide
body: <pre><code>```{r, fig.width=8,fig.height=4}
  
  ggplot(cer12, aes(reorder(Ciudad,-Impactos), Impactos, fill = Marca)) + geom_bar(stat="identity") + theme_minimal() 
  
  ggplot(cer13, aes(reorder(Ciudad,-Impactos), Impactos, fill = Marca)) + geom_bar(stat="identity") + theme_minimal()
  
  ggplot(cer14, aes(reorder(Ciudad,-Impactos), Impactos, fill = Marca)) + geom_bar(stat="identity") + theme_minimal()
  
  ggplot(cer15, aes(reorder(Ciudad,-Impactos), Impactos, fill = Marca)) + geom_bar(stat="identity") + theme_minimal()
  
  ```             
  </code></pre>
  
  <p>I would like to add several charts into one slide (R Markdown Ioslides).</p>
  
  <p>I would also like to create a ToC (R Markdown Ioslides).</p>
  
  <p>Any help please?</p>
  
  <p>Thank you very much</p>