screenshot DiagrammeR

Author: yihui

04-content.Rmd

@@ -575,7 +575,7 @@ While there are several different packages available for R, we will only briefly
 
 The RStudio IDE provides native support for Graphviz (`.gv`) and mermaid (`.mmd`) files. Editing these types of files in RStudio has the advantage of syntax highlighting. RStudio also allows you to preview the diagrams by clicking the "Preview" button on the toolbar. Figure \@ref(fig:diagram-profit) is a simple flowchart example that has four rectangles representing four steps, generated by the code below:
 
-```{r diagram-profit, fig.align='center', fig.cap="A diagram showing a programmer's daydream.", fig.dim=c(3, 6), out.width="100%"}
+```r
 DiagrammeR::grViz("digraph {
   graph [layout = dot, rankdir = TB]
   
@@ -591,13 +591,17 @@ DiagrammeR::grViz("digraph {
   height = 500)
 ```
 
+```{r diagram-profit, echo=FALSE, fig.align='center', fig.cap="A diagram showing a programmer's daydream.", out.width="100%"}
+knitr::include_graphics('images/diagram-profit.jpg', dpi = NA)
+```
+
 There are extensive controls that can be used to define the shape of nodes, colors, line types, and add additional parameters.
 
 ### Adding parameters to plots
 
 Graphviz substitution allows for mixing R expressions into a Graphviz graph specification, without sacrificing readability. If you specify a substitution with `@@`, you must ensure there is a valid R expression for that substitution. The expressions are placed as footnotes and their evaluations must result in an R vector object. The `@@` notation is immediately followed by a number, and that number should correspond to the number of the R expression footnote. Figure \@ref(fig:diagram-params) shows an example of embedding and evaluating R code in the diagram.
 
-```{r diagram-params, fig.cap="A diagram using parameters input from R.", fig.dim=c(6, 1), out.width="100%", crop=TRUE}
+```r
 DiagrammeR::grViz("
   digraph graph2 {
   
@@ -621,6 +625,10 @@ DiagrammeR::grViz("
   height = 100)
 ```
 
+```{r diagram-params, echo=FALSE, fig.cap="A diagram using parameters input from R.", out.width="100%"}
+knitr::include_graphics('images/diagram-params.jpg', dpi = NA)
+```
+
 ### Other packages for making diagrams
 
 You may also check out these packages for creating diagrams: **nomnoml** [@R-nomnoml], **diagram** [@R-diagram], **dagitty** [@R-dagitty], **ggdag** [@R-ggdag], and **plantuml** (https://github.com/rkrug/plantuml).