[R] Error: could not find function "tsts" tradesys package

[dbonneau]

Hi, I am pretty new to R and would like to follow the code in the paper
below, tradesys package. but I am stuck at the 2nd page where x<-tsts(spx)
is written. Could anyopne help me why I am getting an Error :"could not find
function "tsts" ". I guess I need function call "tsts". where can I find
that function ? I installed tradesys, zoo, RUnit packages but I don't know
why it gives me error. Thanks

http://r-forge.r-project.org/plugins/scmsvn/viewcvs.php/*checkout*/pkg/inst/doc/tradesys.pdf?rev=19&root=tradesys
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