[R] Plot only a subset of all factors in dataframe

Fri Jan 4 18:31:53 CET 2008

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Try this:  plot(subset(df[,c(3,5)], type %in% c("exact", "broader1", "narrower4")))   On 04/01/2008, Laura Hollink <laurah at cs.vu.nl> wrote: > Hi all, > I have a dataframe called 'table' in which both factors and numerical > values are stored. > >  > dim(table) > [1] 990   6 > > The fist 10 lines of table, to get an idea: > >  > table[1:10,] >    QueryNo    Query  type Ret Prec  Rec > 1        1   Sports exact   1    1 0.01 > 2        5   Office exact   0  NaN 0.00 > 3        6  Meeting exact   0  NaN 0.00 > 4        7   Studio exact   0  NaN 0.00 > 5        9 Building exact   0  NaN 0.00 > 6       10   Desert exact   1    1 0.01 > 7       12 Mountain exact   0  NaN 0.00 > 8       13     Road exact   0  NaN 0.00 > 9       14      Sky exact   0  NaN 0.00 > 10      15     Snow exact   0  NaN 0.00 > > I want to plot column 5 (numerical values) against column 3 (factors). > > plot(table[,c(3,5)]) works fine. > > However, I don't want to include all 30 levels of the factor in the > plot. I would like a plot of just 5 factors: "exact", "broader1", > "narrower4", etc. > > Could anyone tell me how to do this, or where to find information about > this? > > Thanks! > Laura