Separate with spaces to output chunk pieces RMarkdown

Question

I have the following chunk code

## Generamos  modelo (CAFEINA incluído)

```{r tidy=TRUE}
(modelo<-randomForest(diagnostico~.,data=datos.entreno))

# La importancia de las variables
vimp<-as.data.frame(modelo$importance)
vimp[order(vimp$MeanDecreaseGini),,drop=FALSE]


# Hacer predicciones
predicciones <- predict(modelo, datos.test)
predicciones

# Matriz de confusión
(mc <- with(datos.test,table(predicciones, diagnostico)))
```

when it is converted in pdf format, it looks like this:

How can I add spaces in the "yellow" places I marked?. What i want is to separate a little bit more the R code from the previous output piece.

Answer 1

You want to include in the output both the R code and the results. The inclusion of additional commands in R code will bring them to the output as well. Thus, you may consider splitting of R chunk into several pieces in order to add space by means of tex. Here are the three options to add space between code chunks.

## Generamos  modelo (CAFEINA incluído)
```{r tidy=TRUE}
(modelo<-randomForest(diagnostico~.,data=datos.entreno))
```
&nbsp;         <!-- Option #1 -->
&nbsp;
```{r tidy=TRUE}
# La importancia de las variables
vimp<-as.data.frame(modelo$importance)
vimp[order(vimp$MeanDecreaseGini),,drop=FALSE]
```
\leavevmode
\newline       <!-- Option #2 -->
```{r tidy=TRUE}
# Hacer predicciones
predicciones <- predict(modelo, datos.test)
predicciones
```
\vspace{30mm}  <!-- Option #3 -->
```{r tidy=TRUE}
# Matriz de confusión
(mc <- with(datos.test,table(predicciones, diagnostico)))
```