I am trying to use the package quantmod to get option quotes in R.
Therefore, I executed the following two commands:
library ("quantmod" )
getOptionChain("AAPL")
The first one worked but the second one produced the following error
message:
Error in getOptionChain.yahoo(Symbols = "AAPL") :
package:“XML”cannot be loaded.
Therefore, I am thinking I need to install the package XML. To do so, I
executed the following command:
install.packages( "XML" )
However, that command failed because it could not find the package XML.
The following URL:
https://cran.r-project.org/web/packages/XML/XML.pdf
indicates to me that it does exist.
I am hoping somebody can tell me what I am doing wrong.
Thanks
Bob
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