R help - Nov 2014 - qq-plot in R

Hi,

I am some questions on qq-plot offered by R. Let say I have following qq-plot:

?qqplot(rt(300, df = 5), rt(300, df = 5))
However I want to get more controls to define the range of x-axis as well as
y-axis. For example I want to define that, x-axis range will be -10 to 10 and
y-axis range will be 0-10 (just an example on what I am looking for).
Additionally I want to get the entire list of (x,y) coordinates for all plotted
points.
Basically one my goals is to draw multiple different qq-plots onto same
plot-window, with my optimally chosen range of x & y axes.
Can somebody here guide me how to achieve that?
Appreciate your pointers and help.
Thanks,
	[[alternative HTML version deleted]]

Hello, ron,

have you looked at the help page of qqplot and consequently tried, e.g., 
the following?

xy <- qqplot( rt(300, df = 5), rt(300, df = 5),
               xlim = c(-10, 10), ylim = c(0, 10))
str( xy)



Hth  --  Gerrit


On Tue, 11 Nov 2014, Ron Michael wrote:
> Hi,
>
> I am some questions on qq-plot offered by R. Let say I have following
qq-plot:
>
> ?qqplot(rt(300, df = 5), rt(300, df = 5))
> However I want to get more controls to define the range of x-axis as well
as y-axis. For example I want to define that, x-axis range will be -10 to 10 and
y-axis range will be 0-10 (just an example on what I am looking for).
Additionally I want to get the entire list of (x,y) coordinates for all plotted
points.
> Basically one my goals is to draw multiple different qq-plots onto same
plot-window, with my optimally chosen range of x & y axes.
> Can somebody here guide me how to achieve that?
> Appreciate your pointers and help.
> Thanks,
> 	[[alternative HTML version deleted]]
>
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