[R] How can I obtain smooth lines in graphs?

[Judith Flores]

Thank you Marc,

   I am using R (version 2.5.0), Windows 2000, and
Power Point as the final output and yes, you are right
regarding the quality of a PDF file, it's much better
than the ones I have tried so far (JPEG, PNG). 

   How can I increase the DPIs? 

Thank you,

Judith 
--- Marc Schwartz <marc_schwartz at comcast.net> wrote:

> On Wed, 2007-06-20 at 17:05 -0700, Judith Flores
> wrote:
> > Hi,
> > 
> >    I need to plot lines in a graph, but when I run
> the
> > corresponding commands I obtain pixel-like lines,
> they
> > need to be smooth, is there a way to do this?
> > 
> > Thank you,
> > 
> > Judith
> 
> Judith,
> 
> You will need to provide more information (version
> of R, OS, output
> device, etc.) and some sample code. 
> 
> If you are generating a bitmapped image file such as
> PNG or JPEG, as
> opposed to a vector based image such as PDF, EPS or
> WMF/EMF then there
> is not much you can do with respect to the
> pixelation of curved/angled
> lines or curves/angles in text.   You can increase
> the dpi (dots per
> inch) to enhance the relative resolution (at the
> expense of a larger
> file), but the image quality is still dependent on
> the device upon which
> the image is viewed. 
> 
> Pending further information, if you need high
> quality output, depending
> upon the intended use, then you want to use vector
> based images.
> 
> HTH,
> 
> Marc Schwartz
> 
> 
>