Issues with formatting header in R prior to using plot() function

Question

I have a data set that I've successfully read into R. It's a simple data.frame with ONE ROW of data (I'm not sure how many columns, but its in the hundreds). It was read with column headers, but no row labels. So the data set looks something like this:

df=structure(list(X500000 = 0.0958904109589041, X1500000 = 0.10958904109589, X2500000 = 0.10958904109589, X3500000 = 0.164383561643836, X4500000 = 0.136986301369863, X5500000 = 0.205479452054795, X6500000 = 0.136986301369863, X7500000 = 0.0273972602739726, X8500000 = 0.0821917808219178, X9500000 = 0.178082191780822), .Names = c("X500000", "X1500000", "X2500000", "X3500000", "X4500000", "X5500000", "X6500000", "X7500000", "X8500000", "X9500000"), class = "data.frame", row.names = 79L)

Except that it is MUCH LARGER (I don't know if it matters, but it has around 300 columns going across). I'm trying to plot it so that the X##### labels are on the x axis, and the value of each data point is plotted on the y axis (say like a scatter plot on excel or even a line graph). Doing just plot(df) gives me an extremely bizarre graph that makes no sense to me (a bunch of boxes each with a dot right in the centre and no labels?).

I have a feeling it might work if I were to transform the data frame into a vector by removing the headings and then adding x-axis labels individually afterwards and doing a plot() on the vector, but if there is a way of avoiding that it would be great....

Answer 1

As explained in '?plot', 'x' and 'y' must be two vectors of numerics, of same size:

df=structure(list(X500000 = 0.0958904109589041, X1500000 = 0.10958904109589, X2500000 = 0.10958904109589, X3500000 = 0.164383561643836, X4500000 = 0.136986301369863, X5500000 = 0.205479452054795, X6500000 = 0.136986301369863, X7500000 = 0.0273972602739726, X8500000 = 0.0821917808219178, X9500000 = 0.178082191780822), .Names = c("X500000", "X1500000", "X2500000", "X3500000", "X4500000", "X5500000", "X6500000", "X7500000", "X8500000", "X9500000"), class = "data.frame", row.names = 79L)    


plot(x=as.numeric(substr(names(df),2,nchar(names(df)))), as.numeric(df), xlab="This is xlab", ylab="This is y")