On Jun 22, 2010, at 10:29 PM, Weidong Gu wrote:
>
> The question is how to transform 'mainland' back into SpatialPolygons format.
Hi,
maybe try the following:
library(maps)
library(maptools)
usa=map('usa',plot=F,fill=T)
IDs=sapply(strsplit(usa$names,':'), function(x) x[1])
crs=CRS('+proj=lo
On Jun 7, 2010, at 2:23 PM, Hans-Jörg Bibiko wrote:
> On Jun 7, 2010, at 1:36 PM, Heuvelink, Gerard wrote:
> I used 'Add polygon' in Google Earth to create a (single) closed polygon. It
> was saved with extension kmz.
>>
>> How can I open such a file in R, suc
On Jun 7, 2010, at 1:36 PM, Heuvelink, Gerard wrote:
> I used 'Add polygon' in Google Earth to create a (single) closed polygon. It
> was saved with extension kmz.
>
> How can I open such a file in R, such that I can for instance do an overlay
> with raster maps (SpatialGridDataFrame)?
Here
Hi,
My task is to draw a projected map (proj=cea, lon_0=25E) based on data coming
from
http://mappinghacks.com/data/TM_WORLD_BORDERS-0.2.zip (not wrld_simpl)
which should have different colours for political boundaries and coastlines AND
some country polygons should be highlighted by a differe
On Jan 8, 2010, at 2:29 PM, Karl Ove Hufthammer wrote:
> On Fri, 8 Jan 2010 13:25:24 +0100 Hans-Jörg Bibiko
> wrote:
>> Thanks for the hint!
>> The absolute length can make sense of course but if I need also
>> the largest rivers of a smaller island then this fai
On Jan 8, 2010, at 1:41 PM, Barry Rowlingson wrote:
> http://www.naturalearthdata.com/downloads/10m-physical-vectors/
>
> the one with "scale ranks and tappering" has some metadata which might
> relate to size...
Ah, yes. Thanks a lot!!
This kind of data I looked for :)
--Hans
__
On Jan 8, 2010, at 12:20 PM, Karl Ove Hufthammer wrote:
> On Fri, 8 Jan 2010 10:11:20 +0100 Hans-Jörg Bibiko
> wrote:
>> I've a tiny question. Is there an annotated river dataset available?
>> By 'annotated' I mean that rivers are ranked by a sort of
>>
Hi,
I've a tiny question. Is there an annotated river dataset available? By
'annotated' I mean that rivers are ranked by a sort of relevance/size/length or
whatever. The problem is that I have an huge SpatialLines object called
'rivers' which shows ~23200 rivers but I have to draw a map which
Hi,
I tried to find an answer in the net but up to now without success.
A simple example made with:
R version 2.10.0 (2009-10-26)
x86_64-apple-darwin9.8.0
locale:
[1] C/en_US.UTF-8/C/C/C/C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
My
Or simply go to http://www.gadm.org/country
select China and format R.
Cheers,
Hans-Jörg
**
Hans-Joerg Bibiko
Max Planck Institute for Evolutionary Anthropology
Department of Linguistics
Deutscher Platz 6 phone: +49 (0) 341 3550 34
Just i want to know how to make maps of chinese provinces with R
Maybe look at http://ciesin.org/
and
look for "China GIS" at
http://www.ciesin.columbia.edu/eidata/resources.jsp
you get
http://sedac.ciesin.columbia.edu/china/
and
http://sedac.ciesin.columbia.edu/china/admin/bnd9071/bnd
Thanks a lot for the hints. I'll try them.
Kind regards
--Hans
**
Hans-Joerg Bibiko
Max Planck Institute for Evolutionary Anthropology
Department of Linguistics
Deutscher Platz 6 phone: +49 (0) 341 3550 341
D-04103 Leipzig fax
Hi,
I have a short question.
Is there any workaround available which tries to convert a list of
SpatialLines to a list of SpatialPolygons objects?
In my case I have a list of Lines objects coming from a gshhs
(shorelines) file. The list represents 8 polygons of a given xlim/
ylim. Now I'd
Dear all,
I have a tiny problem, I'd like to draw a map showing topographic
information (like in a normal atlas) and on top of this map some
polygons, points, etc. given by long, lat values.
I tried the geomapdata ETOPO5 in conjuction with GEOTOPO which
actually works fine but the point i
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 359.9
Hi,
one simple possibility to draw seamless maps based on e.g.
TM_WORLD_BORDERS_SIMPL-0.2 is to draw each polygon in question twice
meaning first the 'normal' polygon and afterwards the transformed
polygon by simply adding 360 to each x-value (for maps with lon from
-180 to 540).
The fo
On 30.01.2009, at 07:47, Edzer Pebesma wrote:
Jim Burke wrote:
OK I am on decaf coffee now. I reinstalled R and
all is well now.
Now Hans, below is what I get when I run your code.
Is this expected? Quick and certainly DIRTY.
> library("maptools")
Loading required package: foreign
> load(url
On 29.01.2009, at 16:49, Jonathan Callahan wrote:
Is anyone aware of an even more simplified version of the data that
went
into creating TM_WORLD_BORDERS_SIMPL-0.2.RData so that we might have
TM_WORLD_BORDERS_LOWRES.RData for use cases like my own.
A very quick solution would be to filter out
On 29.01.2009, at 13:08, Roger Bivand wrote:
Set the pbg= argument to set the "bg" (background) to something
other than "transparent" - if it is transparent, the previously
plotted larger and encompassing polygon is still visible. I'm afraid
that the documentation, which should be in ?"Spa
Hi,
I'm just preparing a SpatialPolygonsDataFrame for ISO3 = "PSE" which
is missing in TM_BORDERS data.
I have three polygons: p1 p2 p3 whereby p2 is a hole inside of p1.
Then I did this:
P1 <- Polygon(p1)
P2 <- Polygon(p2)
P3 <- Polygon(p3)
pse <- list(P1,P2,P3)
pseP <- checkPolygonsHoles
Hi,
due to the fact that I'm just converting some free available data-sets
to SpatialPolygonsList objects containing country/province/county
polygons (each polygon can be identified by an unique name) I wonder
if there is a recommendation/example how to store such data in a
single R objec
On 26.01.2009, at 12:06, Paul Hiemstra wrote:
Please checkout the spTransform() command which allows you to
reproject your sp objects (it is located in the rgdal package).
On 26.01.2009, at 12:06, Roger Bivand wrote:
No. Your data are in a Lambert projection, probably lcc, but
possibly lae
Hi,
I was able to convert an e00 file to a SpatialPolygons object (thanks
a lot to everybody who was involved to set up this functionality!) by
using 'e00toavc' and 'pal2SpatialPolygons'.
But now I'm a bit lost in conversion. How to set the correct
projection which is needed for 'pal2Spat
On 08.01.2009, at 15:05, Roger Bivand wrote:
On Thu, 8 Jan 2009, Matt Oliver wrote:
Hans,
Take a look at the proj4 package, specifically project()
Or rather rgdal, which is a fully featured implementation with a
proper interface to the PROJ.4 library. Unfortunately, there does
not seem
On 08.01.2009, at 14:27, Roger Bivand wrote:
On Thu, 8 Jan 2009, Hans-Jörg Bibiko wrote:
Hi,
I wonder if there's a workaround to generate seamless maps based on
SpatialPolygons objects. E.g. to produce a map showing Australia at
the left edge and America at the right one ( xlim :
Hi,
I wonder if there's a workaround to generate seamless maps based on
SpatialPolygons objects. E.g. to produce a map showing Australia at
the left edge and America at the right one ( xlim := min: 110°E , max:
30°W ).
Or the way around, is there a function to re-center a given map by
def
On 07.01.2009, at 15:47, Roger Bivand wrote:
Your ID has two unique values:
ID
[1] (-67.1,-64.6] [-74.4,-71.9]
Levels: [-74.4,-71.9] (-71.9,-69.5] (-69.5,-67.1] (-67.1,-64.6]
with two country polygons:
length(slot(pe_bo_data, "polygons"))
[1] 2
so you get two output polygons. If you do:
Hi,
I have a tiny problem. I'm using Roger Bivand's ( http://spatial.nhh.no/R/etc/TM_WORLD_BORDERS_SIMPL-0.2.RData
) to create a plot showing two countries without boundaries. I did
this:
library("foreign")
library("sp")
library("maptools")
library("gpclib")
load("TM_WORLD_BORDERS_SIMPL-
28 matches
Mail list logo
