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Rgshhs shift=true question

2 messages · Hans-Jörg Bibiko, Roger Bivand

Original
Hans-Jörg Bibiko
# 
Hi,

I'm using the river database 'wdb_rivers_l.b' downloaded from ftp://ftp.soest.hawaii.edu/pwessel/gshhs/gshhs_1.11.zip 
.

If I do this:

 > rivers_low <- Rgshhs("wdb_rivers_l.b")

I get a list of rivers as SpatialLines with

 > bbox(rivers_low[[1]])
           min       max
r1   0.000278 359.99944
r2 -52.733333  74.41167

Fine.

But I need a xlim range of c(-180, 180). I could do it manually but I  
read in ?Rgshhs that there's an argument 'shift' which, set to TRUE,  
shifts longitudes > 180 degrees to below zero. But if I call:

 > rivers_low <- Rgshhs("wdb_rivers_l.b", shift = TRUE)

I get the same bbox.

What am I doing wrong?

Thanks in advance and kind regards,

--Hans
Roger Bivand
#
On Wed, 18 Feb 2009, Hans-J?rg Bibiko wrote:

            

      
      
      
    

        
Nothing wrong, it was a bug. Support for the two lines databases was added 
only in draft form, and that argument wasn't respected. From 0.7-20, it is 
respected.

Roger