Below, the first command simply creates a list of 16 names (labels)
which can be ignore.
In the 2nd and 3rd commands, I am able to identify names containing "black".
In line 4, I am trying to identify names containing "black" or "conserv"
but obviously it does not work. Can someone help? Thanks.
> names<-names(tp.nohs$estimate)[c(1:8,58:65)]; names
[1] "x1.one" "x1.black" "x1.othrrace" "x1.moddkna"
"x1.conserv" "x1.nstrprty"
[7] "x1.strrep" "x1.sevngprt" "x2.one" "x2.black" "x2.othrrace"
"x2.moddkna"
[13] "x2.conserv" "x2.nstrprty" "x2.strrep" "x2.sevngprt"
> grep("black",names,value=TRUE)
[1] "x1.black" "x2.black"
> grep("black",names,value=FALSE)
[1] 2 10
> grep(c("black","conserv"),names,value=TRUE)
[1] "x1.black" "x2.black"
Warning message:
In grep(c("black", "conserv"), names, value = TRUE) :
argument 'pattern' has length > 1 and only the first element will be used
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