[R] Quantil-quantile plot help

[Bayesianbay@aol.com]

Dear list

I am using the qq.plot command to create quantile-quantile plots. The plot 
should display a 45 degree reference line upon which the points of the graph 
should fall if the two distributions being examined are roughly equal.

If I try:
x<-rchisq(100, df=6)
qq.plot(x, dist="chisq", df=6)

Then I get a quantile plot which has an intercept of roughly 1 when the line 
should be going through (0,0)?

Could someone explain why this is happening on this plot and how I can get 
what I need?

Many thanks
Laura
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