[R] Why the variation when creating .pdf file output for my plots?

[Karl Brand]

Thank you Erik!

That works nicely now. The file size in (in kilobytes) is equal to the 
"File>Save As>PDF" method.

Still curious why the file sizes (in Kb), differ by a factor of ~2 
between the two methods:

pdf()
dev2bitmap(method = "pdf")

I'm just *assuming* here that file size is inidcative of image quality. 
Is this assumption correct? If so, how would one increase .pdf quality 
within the  dev2bitmap() function?

With thanks for any further thoughts on this, cheers,

Karl



On 6/30/2010 4:58 PM, Erik Iverson wrote:
>
>>
>> Method 3:
>> > pdf(file="my_plot.pdf", paper="a4")
>> > dev.off()
>
> The `pdf` function opens a *new* graphics device, you then send output
> to the device before calling dev.off(), e.g.,
>
> pdf(file = my_plot.pdf")
> plot(1:10, 1:10)
> dev.off()
>
>
>>
>> -yields a .pdf file of 1kb (same plot example) and returns the
>> following error when attempting to open with Adobe acrobat:
>>
>> "There was an error opening this document. This file cannot be opened
>> because it has no pages."

-- 
Karl Brand <k.brand at erasmusmc.nl>
Department of Genetics
Erasmus MC
Dr Molewaterplein 50
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