saveChart cannot assign chart object to quantmod evironment

[joshuaulrich]

saveChart() throws an error because the .chob binding is locked. This was first reported in this thread on R-SIG-Finance. Thanks to Wilson Thong for the reminder to address this issue.

library(quantmod)
data(sample_matrix)
x <- as.xts(sample_matrix)
chartSeries(x)
saveChart()
# Error in assign(".chob", x, env) : 
#   cannot change value of locked binding for '.chob'

Session Info

R> sessionInfo()
R version 3.3.3 (2017-03-06)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 14.04.5 LTS

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

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

other attached packages:
[1] quantmod_0.4-8 TTR_0.23-1     xts_0.10-0     zoo_1.8-0     

loaded via a namespace (and not attached):
[1] tools_3.3.3     grid_3.3.3      lattice_0.20-35