It would be useful to allow for export of a Graphviz and mermaid diagram to SVG. Exporting to an SVG file would be useful for importing that SVG to another application for further work (e.g., Sketch, Illustrator, and Visio all accept SVG files, I believe).

Writing the SVG markup to an R object would also be quite useful. This would be good for understanding how to generate SVG transitions and other packages using DiagrammeR could optionally use the generated SVG for other purposes.

@timelyportfolio: is there an easy way to do this? I recall that there are various export options in the documentation for viz.js. It would be great to enable an export right inside the Graphviz graph specification in the footnotes area (indeed this will have to be done for selection of the different rendering engines).

I'm using RStudio Version 0.98.1103. Nothing actually saves when I use the RStudio Export function to "Save as Image." This might be a problem on RStudio's end, or I'm just experiencing some odd quirk.

@pommedeterresautee Since Issue #7 began as a discussion about CRAN integration, I thought it would be good to start this new thread that isolates and tracks the discussion about additional features, primarily interactivity. I hope this is ok.

Does anyone know if in Shiny it's possible to collapse a branch of a generated tree? (like you click on a node and the branch after the node are collapsed)

Very little of the first round of mermaid.js development (parsing and rendering) has focused on interactivity, but there is support for callbacks within its markdown-like spec that we could use.

With mermaid.js, we already have d3 to help us, and there are quite a few collapsible, pan-zoom examples to use. Two pre-mermaid and pre-DiagrammeR for reference from R with a rpart that I had done
http://bl.ocks.org/timelyportfolio/d49cb07923eff7a75886
http://rcharts.io/viewer/?adc2dfee7aef48ce5485

I think htmlwidgets will be the best way to wrap the mermaid.js and other javascript libraries. This will be a great example, so I will attempt to convert this in a forked repo. Let me know if you would like me to submit a pull request for the converted version. This way you can get credit for the work.

mermaid.js must have an internal counter on mermaid.init() to assign the id to the SVG container for the diagram. In DiagrammeR, we set startOnLoad = F to suspend the auto-render behavior of mermaid.js and then run mermaid.init() each time we process a widget. If only one widget then fine, but if we have >1 widget, then the mermaidChart0 gets assigned to each SVG and everything breaks. I'll probably file an issue with mermaid.js but for now, change the render behavior in DiagrammeR to suspend mermaid.init() until the last widget. However, we will likely run into trouble even with this method in a Shiny context.

reproducible example of problem:

library(DiagrammeR)
library(htmltools)

dg = DiagrammeR("graph LR; A;")

html_print(tagList(dg,dg))

I have no experience with writing / building vignette, but I don't see any reference to it in the built package but I see the source file.

Do I have something special to do during the compilation?

brary/3.1'
* installing *source* package 'DiagrammeR' ...
** R
** inst
** preparing package for lazy loading
** help
*** installing help indices
** building package indices
** installing vignettes
** testing if installed package can be loaded
* DONE (DiagrammeR)

Help page:

Documentation for package ‘DiagrammeR’ version 0.01

DESCRIPTION file.
Help Pages

DiagrammeR  R + mermaid.js
DiagrammeROutput    Widget output function for use in Shiny
renderDiagrammeR    Widget render function for use in Shiny

I am working on a plot function for this ML package https://github.com/tqchen/xgboost (I want to plot the tree model generated). I think DiagrammeR is perfect for this job.

However it would require a new dependency from Xgboost R package to your package and I can't do it properly until your package is pushed to Cran. Therefore, do you plan to push your package to Cran?

Kind regards,
Michaël

There is a strange bug in Internet Explorer. When I create a graph with Mermaid on Rstudio, I see the Diagram in the Viewer (as expected).

Then I click the button to open it in a browser. On my work laptop, IE is default without a way to change it (of course).
Then... I got just that:

NoModificationAllowedError

I copy paste the link to Chrome and I see again my diagram.

I have IE 11.0.9600...
Windows 8.1 64 bits

Sorry to bring such horrible IE bugs here. May be there are other poor guys who need to use IE and will want to use DiagrammeR. However, in my specific case, I don't really care, I never use IE, but for some other, may be mandatory.

Hello,

The DiagrammeR package is great!
I try to do a diagramme using Shiny and modify the height and width using input sliders.
The app works, but moving the sliders does not affect the size of the output.
The idea would be to increase the size when the number of nodes is large.

Below is a code example.
What I am doing wrong? Do grVizOutput parameters overpass graphviz_render parameters?

Thank you for your help!

library(shiny)
library(DiagrammeR)
library(magrittr)

##------------------------------------------
## ui function

ui = shinyUI(fluidPage( 
  fluidRow(
    column(
      width=3,
      textInput('x', 'Node Name', 'a'),
      sliderInput(inputId = "height", label = "Height", min = 0, max = 1000, value = 300, step = 100),
      sliderInput(inputId = "width", label = "Width", min = 0, max = 1000, value = 300, step = 100)
    ),
    column(
      width = 8
      , grVizOutput('diagram', height = "1000px", width = "1000px")
    )
  )
)
)


##------------------------------------------
## server function

server = function(input, output){

  output$diagram <- renderGrViz({

    create_nodes(nodes = c(input$x, "b", "c", "d")) %>%
      graphviz_graph  %>% 
      graphviz_render(output = "DOT", width = input$width, height = input$height) %>%
      grViz

  })
}


##------------------------------------------
## run app

shinyApp(ui = ui, server = server)


## sessionInfo()
## R version 3.1.2 (2014-10-31)
## Platform: x86_64-w64-mingw32/x64 (64-bit)
## magrittr_1.5      DiagrammeR_0.5    shiny_0.11.1.9004

## Firefox 37.0.2

People working on R have not to care to what tech is used to render their graph.
In a diagram you may have several lines, they will usually be separated by \n.
Unfortunately Mermaid doesn't care of \n but takes
into account.
May be it would be good to make this transformation by the R plugin.

Moreover I don't see any reason why someone would want to keep \n in the text of its diagram.

Best of all, it should take 1mn to implement the function.

Currently DOT is implemented and it renders SVG from a graph spec provided in dot syntax. Still need to incorporate the other styles such as neato, twopi, and the handful of others.

Hi,

I am finding this package very useful and have been testing its using R Shiny v0.11 quite a bit and found a strange issue. This is using Mermaid with R Shiny v0.11.

I have taken the sample R Shiny program (at the end of the README file in https://github.com/rich-iannone/DiagrammeR) and modified it to make two calls to DiagrammeR.

The output contains the raw text showing the spec for the first diagram, and draws the visual for the second spec. In other words, only one call gets executed, while for the second call it simply dumps the markdown.

The code is given below.

library(shiny)

ui = shinyUI(fluidPage(
textInput('spec', 'Diagram Spec', value = ""),
DiagrammeROutput('diagram'),
DiagrammeROutput('diagram2')
))

server = function(input, output){
output$diagram <- renderDiagrammeR(DiagrammeR(
input$spec
))
output$diagram2 <- renderDiagrammeR(DiagrammeR(
input$spec
))

}

shinyApp(ui = ui, server = server)

My session Info

sessionInfo()
R version 3.1.2 (2014-10-31)
Platform: x86_64-pc-linux-gnu (64-bit)

locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=C LC_COLLATE=C LC_MONETARY=C LC_MESSAGES=C LC_PAPER=C LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C LC_MEASUREMENT=C LC_IDENTIFICATION=C

attached base packages:
[1] stats graphics grDevices utils datasets methods base

other attached packages:
[1] shinyAce_0.2.0 whisker_0.3-2 shinythemes_1.0 DiagrammeR_0.3 dplyr_0.4.1 shiny_0.11 RMySQL_0.10.1 DBI_0.3.1

loaded via a namespace (and not attached):
[1] R6_2.0.1 RJSONIO_1.3-0 Rcpp_0.11.3 assertthat_0.1 digest_0.6.8 htmltools_0.2.6 htmlwidgets_0.3.2 httpuv_1.3.2 lazyeval_0.1.10
[10] magrittr_1.5 mime_0.2 parallel_3.1.2 rstudioapi_0.2 tools_3.1.2 xtable_1.7-4 yaml_2.1.13

I am not sure of how it works. If you put a size too small it will be increased to what is required, if it is a value to high then it is too big, finally if no value is provided, the best value is choosen. Am I right?

Not sure if this is a Mermaid issue or DiagrammeR, but the subgraph titles are not showing:

DiagrammeR("
  graph TB
         subgraph one
         a1-->a2
         end
         subgraph two
         b1-->b2
         end
         subgraph three
         c1-->c2
         end
         c1-->a2

  classDef default fill:#CCCCCC,stroke:#333,stroke-width:1px;
  classDef cluster fill:#EEEEEE,stroke:#333,stroke-width:1px;
")

My sessionInfo:

R version 3.1.2 (2014-10-31)
Platform: x86_64-w64-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=English_United States.1252  LC_CTYPE=English_United States.1252   
[3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C                          
[5] LC_TIME=English_United States.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] DiagrammeR_0.4

loaded via a namespace (and not attached):
 [1] bitops_1.0-6      devtools_1.7.0    digest_0.6.8      evaluate_0.5.5    formatR_1.0      
 [6] htmltools_0.2.6   htmlwidgets_0.3.2 httr_0.6.1        knitr_1.9         RCurl_1.95-4.5   
[11] RJSONIO_1.3-0     rmarkdown_0.5.1   rstudio_0.98.1091 rstudioapi_0.2    stringr_0.6.2    
[16] tools_3.1.2       yaml_2.1.13   

I think this is developed enough to start version tagging on Github. Also, adding a News.md (like this) will be helpful to track API changes, error fixes, and new features.

Hi,

I am attempting to use renderUI {includeMarkdown(render(".Rmd"))} to generate a diagram.
The following Rmd is fine when ran standalone. But there's no output running through shiny.

"Index.Rmd"

library(DiagrammeR)
DiagrammeR("
  graph LR;
    A-->B;
    A-->C;
    C-->E;
    B-->D;
    C-->D;
    D-->F;
    E-->F;
")

"server.R"
library(shiny)
library(shinydashboard)
library(DiagrammeR)

function(input, output, session) {
output$ui_framework <- renderUI({
includeMarkdown(rmarkdown::render("index.Rmd",quiet=TRUE,clean=TRUE))
})
}

"ui.R"
dashboardPage(skin="black",
dashboardHeader( ),
dashboardSidebar(
sidebarMenu(
menuItem("Design Flow",tabName = "tab_framework")
)
),
dashboardBody(
tabItems(
tabItem("tab_framework",uiOutput("ui_framework"))
)
)
)

Hi,

I have used this package and find it extremely useful. Thank you for all the great work.

I have built a Shiny based program that makes calls to GraphViz and Mermaid using this package. Any thoughts on how I could save the output to a png or pdf file?

I recall rCharts had a call to generate a standalone html file. Do we have an equivalent call in this package to save the plot as a file?

Thanks

Is it possible to construct say the Stanley Cup playoffs with DiagrammeR
something like
http://www.printyourbrackets.com/nhl-playoff-results/2012-nhl-playoff-bracket-results.jpg

So a basic
library(DiagrammeR)
diagram <- "
graph LR
A(Semi)-->B[Final]
B-->C{Winner}"

mermaid(diagram)

would get me the left hand side but if I try adding

graph RL
E(Semi)-->F[Final]
F-->C{Winner}

I get parsing error

e.g. :

mermaid( "graph LR; Av -->B" )

produces a html file containing this:

Parse error on line 1:
graph LR; Av -->B
-----------^
Expecting 'EOF', 'GRAPH', 'SPACE', 'DIR', 'TAGEND', 'TAGSTART', 'SEMI', 'NEWLINE', 'SQS', 'SQE', 'PS', 'PE', 'DIAMOND_START', 'DIAMOND_STOP', 'MINUS', '--', 'ARROW_POINT', 'ARROW_CIRCLE', 'ARROW_CROSS', 'ARROW_OPEN', 'PIPE', 'STYLE', 'LINKSTYLE', 'CLASSDEF', 'CLASS', 'CLICK', 'NUM', 'COMMA', 'ALPHA', 'COLON', 'BRKT', 'DOT', 'PLUS', 'EQUALS', 'MULT', 'TAG_START', 'TAG_END', 'QUOTE', got 'DOWN'

where with a capital V it works fine;

mermaid( "graph LR; AV -->B" )

gives me this:

Update of Xgboost is about to be pushed on Cran. It is dependent of DiagrammeR for plotting decision trees.

Syntax changed since version 0.1 (use of mermaid function).

Therefore I need to know if you are planning to push an update very soon to Cran to update the syntax in Xgboost.

Kind regards,
Michaël

In file

Thanks @jjallaire for contributing the functionality for providing an external file (with the suggested .mmd extension) for input to the DiagrammeR function. It seems to work well enough now with the error notification. Question is whether to expose this functionality now in an example, or, wait to develop this further (and also wait for the syntax highlighting that an upcoming daily build of RStudio will offer)?

Most of the texts I have on my graph are displayed in half for the last character.

I was wondering if there were any more of less automatic ways to use your package to create graphs based on the logic flow of R source code (i.e., put the condition of an if statement in a diamond shaped object and use an edge to show the contents within the if block that depend on the condition being satisfied)? Not sure if this was something you were already working on or not, but thought it would be a great contribution if there was a tutorial that could show how to do something like that.

While the linkStyle stroke-width attributes are being rendered correctly in the example below, the stroke (color) attributes are not. All edges remain black when, according to the linkStyle, they should be red, blue, and green respectively. Using DiagrammeR_0.5.

DiagrammeR("graph LR;
A-->B;
C-->D;
E-->|This is the text|F;
linkStyle 0 stroke:red,stroke-width:2px;
linkStyle 1 stroke:green,stroke-width:4px;
linkStyle 2 stroke:blue,stroke-width:6px;")

SessionInfo:
R version 3.1.3 (2015-03-09)
Platform: x86_64-apple-darwin13.4.0 (64-bit)
Running under: OS X 10.10.2 (Yosemite)

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats graphics grDevices utils
[5] datasets methods base

other attached packages:
[1] DiagrammeR_0.5

loaded via a namespace (and not attached):
[1] curl_0.5 digest_0.6.8
[3] htmltools_0.2.6 htmlwidgets_0.3.2
[5] jsonlite_0.9.14 Rcpp_0.11.5
[7] RJSONIO_1.3-0 rstudioapi_0.2
[9] tools_3.1.3 V8_0.5
[11] yaml_2.1.13

Regarding mermaid.js auto-render, see mermaid-js/mermaid#91 where this was changed. Once this reaches mermaid build/dist, update the js dependency and also make the change in lines.

I will work on a pull for this.

With pull #22 we add an example of a sequence diagram, but I also think it would be nice to have a dedicated vignette to offer some discussion and examples of sequence diagrams.

The explicit height prevents the diagrams from being autosized and I don't think users should be led to believe that the fixed size behavior is required.

The version of mermaid.js included in the package (and the CRAN release) doesn't require semicolons to terminate lines. Important for multiple statements in single lines but not necessary. I'll remove them from multiline examples and provide some guidance on the change.

We are planning on releasing a new RStudio Preview on Tuesday that will have the new mermaid.js and graphviz authoring features in it. Once we have this I think it would be good to provide:

(a) A link to the preview release page so that users get the right version

(b) An example (perhaps a screenshot)

(c) Perhaps update the graphviz docs on engines to show how to specify the engine directly as a graph attribute (e.g. layout = neato). This is because RStudio calls DiagrammeR with the default arguments so there's no way to preview a non-default engine unless it's specified as part of the graphviz definition.

If this is viewed as problematic we could do one other thing: allow the user to include a comment that notifies any previewer of the preferred engine. We do something similar to this for Sweave engines (this in turn was adapted from the behavior of popular LaTeX editors). e.g. you can add % !Rnw weave = knitr at the top of a Sweave document to tell us to preview it with knitr rather than Sweave. So we could do something like this:

// !Graphviz engine = neato

This is obviously one more thing to implement and learn so if it's considered generally okay to put the engine in the graphviz definition that's simpler and thus preferred. Let me know what you think either way so I can get this into the preview for Tuesday.

When including a grViz diagram in an ioslides presentation, it doesn't show. It is working fine when output is regular HTML (so not ioslides).

Example.Rmd:

---
title: "Test graphViz"
output: ioslides_presentation

---

## Using graphviz
```{r, echo=FALSE}
boxes_and_circles <- "
digraph boxes_and_circles {

  # several 'node' statements
  node [shape = box]
    A; B; C; D; E; F

  node [shape = circle,
        fixedsize = true,
        width = 0.9] // sets as circles
    1; 2; 3; 4; 5; 6; 7; 8

  # several 'edge' statements
    A->1; B->2; B->3; B->4; C->A
    1->D; E->A; 2->4; 1->5; 1->F
    E->6; 4->6; 5->7; 6->7; 3->8

  # a 'graph' statement
  graph [overlap = true, fontsize = 10]
}
"

DiagrammeR::grViz(boxes_and_circles)

Output in Chrome:

Error: No such file or directory

Output in RStudio preview:

abort() at (no stack trace available)

SessionInfo():

R version 3.1.2 (2014-10-31)
Platform: x86_64-w64-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=English_United States.1252  LC_CTYPE=English_United States.1252   
[3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C                          
[5] LC_TIME=English_United States.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] DiagrammeR_0.4.1

loaded via a namespace (and not attached):
 [1] bitops_1.0-6      devtools_1.7.0    digest_0.6.8      evaluate_0.5.5   
 [5] formatR_1.0       htmltools_0.2.6   htmlwidgets_0.3.2 httr_0.6.1       
 [9] knitr_1.9         RCurl_1.95-4.5    RJSONIO_1.3-0     rmarkdown_0.5.1  
[13] rstudioapi_0.2    stringr_0.6.2     tools_3.1.2       yaml_2.1.13   

d <- "graph LR

A[Hard edge] -->|Link text| B(Round edge)
B --> C{Decision}
C -->|One| D[Result one]
C -->|Two| E[Result two]

classDef test fill:#A2EB86,stroke:#777,stroke-width:4px;
class B test;
"

mermaid(d)

The README is beautiful but in R documentation there is no example for graphviz

Hello,

I was having trouble making diagrams reproducible when using grViz and the neato engine. I tried setting start and startType attributes, using the documentation on the Graphviz website, but that didn't seem to work. I also tried setting the seed in R. Is it possible to set the seed in DiagrammeR?

Thanks in advance. The program is awesome!

Cheers,
Micaela

I discovered these posts tonight, and thought they would fit in nicely with DiagrammeR.

http://blog.nguyenvq.com/blog/2014/01/17/skeleton-to-create-fast-automatic-tree-diagrams-using-r-and-graphviz/

Combined with this one http://blog.nguyenvq.com/blog/2012/05/29/better-decision-tree-graphics-for-rpart-via-party-and-partykit/, I think it would be a interesting example.

Hi,

First of all - amazing package. Thank you so much!

I have been trying to create a grViz network diagram using Shiny. It gives me a parser error. Any help would be most appreciated.

Given below is the code and the error

Error

Parse error on line 2:
...s_and_circles { node [shape = box, c
----------------------^
Expecting '{', '}', 'ALPHA', 'NUM', 'COLON', 'PLUS', 'EQUALS', 'MULT', 'DOT', 'BRKT', 'SPACE', 'MINUS', 'keywords', ';', '=', '[', ']', ',', ':', 'ARROW_POINT', 'ARROW_OPEN', got 'NODE'

In global.R

spec <- "
digraph boxes_and_circles {
node [shape = box, color = blue]
A; B; C; D; E
F [color = black]

node [shape = circle,
fixedsize = true,
width = 0.9] // sets as circles
1; 2; 3; 4; 5; 6; 7; 8

edge [color = gray] 
A->1; B->2
B->3 [color = red]
B->4
C->A [color = green]
1->D; E->A; 2->4; 1->5; 1->F
E->6; 4->6; 5->7; 6->7
3->8 [color = blue]

graph [overlap = true, fontsize = 10]
}

"

ui.R

library(shiny)
library(dplyr)
library(DiagrammeR)
library(shinythemes)

shinyUI(navbarPage("AInspector", id="nav",theme = shinytheme("flatly"),
tabPanel("Test",
DiagrammeROutput('gVizDiagram',height = 1200, width = 1200)
)

)) #end ShinyUI

server.R

shinyServer(function(input, output, session) {

output$gVizDiagram <- renderDiagrammeR(
DiagrammeR(diagram=spec,type="grViz",engine="neato")
)

})

Thanks

Is it possible to label the text with latex formula?

When rendered as HTML it seems impossible to get more than on DiagrammeR.
I have tested only with cran version.

See hrbrmstr/metricsgraphics#12 (comment). @jjallaire, would DiagrammeR be ok for the showcase? Thanks to the resolve of @rich-iannone it was accepted to CRAN today. He also did a nice job documenting and adding examples. I would think adding gh-pages using existing stuff or just the vignette would be relatively easy. I just posted this with a couple more examples.

I have added a copy of the JS function from htmlwidgets to V8. This results in a warning for DiagrammeR:

Found the following significant warnings:
Warning: replacing previous import by ‘htmlwidgets::JS’ when loading ‘DiagrammeR’

I think the easiest way to resolve this is to use importFrom(V8, new_context) instead of import(V8).

I think it would be helpful to also reference the DOT spec http://www.graphviz.org/content/dot-language.

This is possibly a big one, and I wanted to get some opinions on this. If we add the viz.js library, we can essentially have graphviz diagrams defined using one of several layout engines like "dot", "neato", "circo", or "twopi". Graphics would be rendered as SVG. The examples of the types of diagrams using dot alone look very nice. I think that getting this in early would set the package up for great things down the road. Then, a very strong focus on documentation and ease-of-use enhancements will be needed.

Allow the ability to provide an extra stylesheet that can be used for theming diagrams, instead of having to specify it all in the graph specification,

Perhaps by an additional argument that can be used to point to a CSS sheet that is loaded after the default mermaid.css,

Hello,

Thanks for making this great package. I have a question, not really an issue. Could someone share how to use subscripts within a diagram? I have been trying to use paste0() and expressions to do this, but I have not managed to figure it out.

All the best,
Micaela

Begun some preliminary work on this. The idea is to allow a marker (I've chosen the double ampersand, followed by a number) to be placed in the graph spec. As numbered footnotes, R expressions are to be provided. After some basic checking, the expressions would be evaluated and the results substituted in the proper locations in the graph spec. As this evolves a bit, I'll provide a workable example. I'd like to support expressions that produce vectors, as well.

Why do this at all? Hoping that this separation of (very useful) calculation and graph specs will result in better readability and more simplicity for the user. Again, more details to come...

HI

I have the following packages installed on opensuse 13.2:

S | Name | Zusammenfassung | Typ
--+--------------------------+------------------------------------------+-----------
i | libv8-3 | JavaScript Engine | Paket
i | v8 | JavaScript Engine | Paket
i | v8-devel | Development headers and libraries for v8 | Paket
i | v8-private-headers-devel | Private Development headers for v8 | Paket

but if I run as superuser

install.packages("DiagrammeR")

I get:

8.cpp:221:13: error: ‘class v8::String’ has no member named ‘WriteAscii’
mystring->WriteAscii((char_) res.begin());
^
In file included from V8.cpp:16:0:
/usr/include/v8.h: In instantiation of ‘static void
v8::NonCopyablePersistentTraits::Uncompilable() [with O = v8::Object; T = v8::Context]’:
/usr/include/v8.h:593:17: required from ‘static void
v8::NonCopyablePersistentTraits::Copy(const v8::Persistent<S, M>&,
v8::NonCopyablePersistentTraits::NonCopyablePersistent_) [with S = v8::Context; M = 0
v8::NonCopyablePersistentTraitsv8::Context; T = v8::Context;
v8::NonCopyablePersistentTraits::NonCopyablePersistent = v8::Persistentv8::Context]’
/usr/include/v8.h:5899:21: required from ‘void v8::Persistent<T, M>::Copy(const v8::Persistent<S,
M>&) [with S = v8::Context; M2 = v8::NonCopyablePersistentTraitsv8::Context; T = v8::Context; > M = v8::NonCopyablePersistentTraitsv8::Context]’
/usr/include/v8.h:658:14: required from ‘v8::Persistent<T, M>::Persistent(const v8::Persistent<T,
M>&) [with T = v8::Context; M = v8::NonCopyablePersistentTraitsv8::Context]’
V8.cpp:22:8: required from here
/usr/include/v8.h:597:5: error: cannot convert ‘v8::Primitive_’ to ‘v8::Object_ volatile’ in assignment
TYPE_CHECK(O, Primitive);
^
/usr/lib64/R/etc/Makeconf:142: rule for goal „V8.o“ failed

any idea what I am missing.

best regards

robin

As two distinct functions, should that original DiagrammeR function be removed from examples?

Hello, I've narrowed down a row in my edge graph that prevents the graphviz_graph() function working as it has unicode characters in it.

I'm trying to regex my way out to clean up the data, but it would be nice for a graceful fail or treatment of the Unicode in the package. Here is some example problem data:

Browse[3]> edges[170:175,]
edge_from                                             edge_to arrowhead
170 p56122012                                                  it      none
171 p60080323                           Exclude GG IP VPN Struer      none
172 p60080323                              Exclude GG IP VPN USA      none
173 p60080323 Exclude GG IP VPN GeoPlay netv<U+00C3><U+00A6>rket      none
174 p60080323                           Exclude GG IP VPN Lyngby      none
175 p60080323                        Exclude GG IP VPN Singapore      none

Browse[3]> edges[173,]
    edge_from                                             edge_to arrowhead
173 p60080323 Exclude GG IP VPN GeoPlay netv<U+00C3><U+00A6>rket      none

Browse[3]> str(edges[173,])
'data.frame':   1 obs. of  3 variables:
 $ edge_from: chr "p60080323"
 $ edge_to  : chr "Exclude GG IP VPN GeoPlay netv\u00c3\u00a6rket"
 $ arrowhead: Factor w/ 1 level "none": 1

If I make a graph from 1:172 it works, but 1:173 it just displays a blank page.

Figure out a way to change this default behavior

The rstudio package is no longer bundled with RStudio so the example in the docs might not work for users running the preview version. Rather, the function should be rstudioapi::versionInfo (the rstudioapi package is available from CRAN).