[R-sig-Geo] White space in maps library

[Brian J. Lopes]

Thanks, Frede, now the png looks good.  I was playing with those 
dimensions with someone else, but we were setting both width and height. 
  I appreciate your help.

Thanks,
Brian


Frede Aakmann Tøgersen wrote:
> Well, it has something to do with with the dimensions of the png. The default height and width is 480 pixels. 
> 
> Try
> 
> png("test.png", width = 960)
> par(mar=c(5,5,0,0))
> map('world', xlim=c(-125,-50),ylim=c(25,50))
> map.axes()
> dev.off()
> 
> where I have used the mar-settings of par() too. See ?par.
> 
> Med venlig hilsen
> Frede Aakmann Tøgersen
>  
> 
>  
> 
>> -----Oprindelig meddelelse-----
>> Fra: r-sig-geo-bounces at stat.math.ethz.ch 
>> [mailto:r-sig-geo-bounces at stat.math.ethz.ch] På vegne af 
>> Brian J. Lopes
>> Sendt: 21. april 2008 01:41
>> Til: r-sig-geo at stat.math.ethz.ch
>> Emne: [R-sig-Geo] White space in maps library
>>
>> Hey All,
>>
>> I have a quick question regarding the maps package, and I'm 
>> not sure what I'm missing.
>>
>> Let's say I just want a plot of the US, by using the world 
>> data and to save it as a png
>>
>> library(maps)
>> png("test.png")
>> map('world', xlim=c(-125,-50),ylim=c(25,50))
>> map.axes()
>> dev.off()
>>
>> The limits are actually important for me, so that's why I'm 
>> not using 'usa'.  As you can see by looking at the png file, 
>> there is a lot of excess white space both above and below the 
>> file, I guess this has to do with the dimensions of the png 
>> file, but setting the dimensions in the
>> png() function doesn't seem to help the matter.
>>
>> Any advice on how to deal with this?
>>
>> TIA,
>> Brian
>>
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