R help - Aug 2009 - axis scale

Dear All,
I'm trying to plot a histogram (with the relative frequencies as the Y
axis), But the scale of the y axis is given by
0e+00, 1e-04, 2e-04, 3e-04,.........
Now, I have 2 questions
1- Does (1e-04=0.01831563)?
2- If this true,how can i change the given scale to (0.01,0.03,0.05,0.07,0.09)?



      
	[[alternative HTML version deleted]]

Without a short reproducible example your question is difficult to 
understand, and difficult to give a useful answer.
See comments below.

-Don

At 7:13 AM -0700 8/12/09, maram salem wrote:
>Dear All,
>I'm trying to plot a histogram (with the relative frequencies as the 
>Y axis), But the scale of the y axis is given by
>0e+00, 1e-04, 2e-04, 3e-04,.........
>
>Now, I have 2 questions
>1- Does (1e-04=0.01831563)?
No, 1e-4 does not equal 0.01831563.
1e-4 = 0.0001
>2- If this true,how can i change the given scale to 
>(0.01,0.03,0.05,0.07,0.09)?
Since it's not true I suppose you don't need to change the scale?

If the relative frequency of some bin is 0.0001, why would you want 
to label it 0.01? That would be incorrect.

I find it somewhat difficult to produce a histogram, using hist(), 
with a relative frequency scale, and with relative frequencies on the 
order of 10 to the minus 4. This is another reason why a reproducible 
example is necessary.



-- 
--------------------------------------
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA
925-423-1062

maram salem wrote:
> Dear All,
> I'm trying to plot a histogram (with the relative frequencies as the Y
axis), But the scale of the y axis is given by
> 0e+00, 1e-04, 2e-04, 3e-04,.........
> Now, I have 2 questions
> 1- Does (1e-04=0.01831563)?
> 2- If this true,how can i change the given scale to
(0.01,0.03,0.05,0.07,0.09)?
>
>
>   
Hi Maram,
No, you are mistaking scientific notation for exponentiation. Try using:

options(scipen=4)

before you plot.

Jim

>
>
> 2- If this true,how can i change the given scale to
> (0.01,0.03,0.05,0.07,0.09)?

If you want to change the axis tickmarks you can buildt your plot with
yaxt="n" and then add an axis with what you want, e.g.
axis(side=2,at=c(0.01,0.03,0.05,0.07,0.09),cex.axis=1,las=2)

Hope this helps. If not pls. include a reproducable example.
>
>
>
>
>        [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help@r-project.org mailing list
> stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
	[[alternative HTML version deleted]]