On 13/01/2010, Duncan Murdoch <murd...@stats.uwo.ca> wrote: > On 13/01/2010 7:36 AM, e-letter wrote: >> Readers, >> >> For a data set 'x': >> >> 1 a >> 2 b >> 3 c >> 4 d >> 5 e >> 6 f >> 7 g >> 8 h >> 9 i >> >> How to select multiple subscripts to plot? For example to plot values >> 1:3 and 9:10: >> >> plot(x[1:3,1],x[,2]) >> >> and >> >> plot(x[9:10,1],x[,2]) >> >> into one plot? > > Neither of those will work, because your x[,2] vector is longer than the > other vector. > > What you want is something like this: > > plot(col2 ~ col1, data=x[c(1:3, 9:10),]) > Thanks, I now understand the concatenate function would help but forgot the syntax. Anyway I've just realised that the search database for R yields no result for '?concatenate' which is surprising.
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