Dataframe and vector manipulation

df1 <- data.frame("x"=c(1,0,1),"y"=c(0,0,1)) df2 <- data.frame("x"=c(2,3,1),"y"=c(0,0,1))   v <- c(1,1,1) df1 | v # > v <- c(1,1,1) # > df1 | v #         x    y # [1,] TRUE TRUE # [2,] TRUE TRUE # [3,] TRUE TRUE   v <- c(0,0,0) df1 | v # > v <- c(0,0,0) # > df1 | v #          x     y # [1,]  TRUE FALSE # [2,] FALSE FALSE # [3,]  TRUE  TRUE   v <- c(0,0,0) df2 | v # > v <- c(0,0,0) # > df2 | v #         x     y # [1,] TRUE FALSE # [2,] TRUE FALSE # [3,] TRUE  TRUE

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