plot_ly does not run, when some packages are not installed properly

[kokitsuyuzaki]

Hi,

I examined this issue in detail.
#732

I found that plot_ly can be interfered by some packages.

Pattern.1 : R.utils

library("R.utils")
library("plotly")
plot_ly(z = ~volcano, type = "surface")

Pattern.2 : ggplot2_2.1.0 × plotly_4.5.5.9000

devtools::install_github("ropensci/plotly", force=TRUE)
install.packages("ggplot2")
library(plotly)
plot_ly(z = ~volcano, type = "surface")

Both case, plot_ly does not run properly in my computer.
Please confirm it and make plotly package can be installed safely.

[cpsievert]

This is a problem with R.utils, see HenrikBengtsson/R.utils#60

[HenrikBengtsson]

So, most likely a problem with lazyeval. The following does not involve R.utils and gives the same error:

> env <- NA  ## This is what lazyeval picks up internally
> library("plotly")
[...]
Warning message:
failed to assign NativeSymbolInfo for env since env is already defined in the ‘lazyeval’ namespace 
> plot_ly(z = ~volcano, type = "surface")
Error in .Call(env, f) : 
  first argument must be a string (of length 1) or native symbol reference

The reason you see this when R.utils is attached, is because it defines function env() and lazyeval gets confused just as in above example.

The workaround is to make sure to load the lazyeval package before anything else, that is, call library("lazyeval") the first thing you do in your script.

[kokitsuyuzaki]

Thanks!