Unable to compile Plotly charts from R sweave to pdf - r

Question

I'm unable to convert charts created by plotly in R sweave to Pdf. But other charts can be created. Is there any other additional code needs to be added for plotly charts?
Below is an example
\documentclass{article}
\begin{document}
\SweaveOpts{concordance=TRUE}
<<echo = FALSE>>=
C1<-c("A","B","C")
C2<-c(10,20,30)
Df<-data.frame(C1,C2)
#
\begin {figure}
<<echo = FALSE, fig = TRUE>>=
suppressWarnings (library (plotly))
plot_ly(Df, x = ~C1, y = ~C2, type = "bar")%>% layout(title = "ABC")
#
\caption {PlotlyChart}
\end {figure}
Normal Chart
\begin {figure}
<<echo = FALSE, fig = TRUE>>=
barplot(Df[ ,2], names.arg = Df[ ,1])
#
\caption {Normal_Chart}
\end {figure}
\end{document}
When I try a normal box plot in R, it works. Only when I add Plotly chart, I get an error message as
Running pdflatex on ABC.tex...failed
Error running /Library/TeX/texbin/pdflatex (exit code 1)
I'm new to R sweave and Latex, so any help is appreciated. Thanks!

Answer 1

Plotly produces javascript code that draws the plot. This code is to be executed within a web browser. Plotly is usable when generating an HTML document only. No PDF, no Latex.
BUT you can use package webshot with phantomjs to save the plotly as an image, then include the image as a figure.
First install webshot:
install.packages("webshot")
webshot::install_phantomjs()
Then modify you Sweave file like this:
\documentclass{article}
\begin{document}
\SweaveOpts{concordance=TRUE}
<<echo = FALSE>>=
C1<-c("A","B","C")
C2<-c(10,20,30)
Df<-data.frame(C1,C2)
#
<<echo = FALSE, fig = FALSE>>=
suppressWarnings (library (webshot))
suppressWarnings (library (plotly))
py <- plot_ly(Df, x = ~C1, y = ~C2, type = "bar")%>% layout(title = "ABC")
export(py, file = "myplot.png")
#
\begin {figure}
\includegraphics{myplot.png}
\end {figure}
\end{document}