title: ggplot2 barplot for several categorical variables
body: <p>I would like to create a barplot that shows different variables with the same factors. The dataset is like this</p>
  <pre><code>ID;Word;Excel;Power Point;Correo electronico
  11;Intermedio;Intermedio;Intermedio;Intermedio
  25;Intermedio;Intermedio;Intermedio;Intermedio
  26;Básico;No la he utilizado;Básico;Básico
  27;Básico;Básico;Básico;Intermedio
  29;Intermedio;Intermedio;Intermedio;Avanzado
  33;Avanzado;Intermedio;Avanzado;Avanzado
  37;Avanzado;Básico;Intermedio;Avanzado
  39;Intermedio;Intermedio;No la he utilizado;Intermedio
  43;Intermedio;Intermedio;Intermedio;Intermedio
  51;Avanzado;Básico;Intermedio;Avanzado
  53;Intermedio;Intermedio;Intermedio;Intermedio
  54;Intermedio;Intermedio;Básico;Avanzado
  60;Intermedio;Intermedio;Intermedio;Intermedio
  </code></pre>
  <p>I would like to create a barplot like this
  <a href="https://i.stack.imgur.com/ETLJh.png" rel="nofollow noreferrer">barplot</a></p>
  <p>I have created another barplot that shows all the information as I wanted but it is just with one variable:</p>
  <pre><code>ggplot(aes(x = Tablet, 
               y = prop.table(stat(count)), 
               fill = factor(Tablet), 
               label = scales::percent(prop.table(stat(count)), accuracy = 0.01))) +
    scale_fill_manual(values = CColors)+
    
    geom_bar(position = &quot;dodge&quot;)  + 
    geom_text( aes(label = scales::percent((..count..)/sum(..count..), accuracy = 0.01),
                   y= ((..count..)/sum(..count..))), stat=&quot;count&quot;,
               vjust = -0.5,
               size = 3, 
               hjust=1)+
    scale_y_continuous(labels = scales::percent) + 
    labs(y = 'Frecuencia relativa', fill = 'Uso de Tablet')+
    facet_wrap( ~ Sexo, nrow = 1)+
    theme(axis.title.x=element_blank(),
          axis.text.x=element_blank(),
          axis.ticks.x=element_blank())+ ggtitle(paste(&quot;Uso de Tablet para acceder a clases virtuales \nTotal: &quot;, nrow(das), &quot; Encuestados&quot;))
  </code></pre>
  <p>The result is this
  <a href="https://i.stack.imgur.com/dKEGd.png" rel="nofollow noreferrer">Barplot with one variable and  grouped by Sex</a>
  Thanks for your help</p>