Maps of continents

Hello,

This is a really basic question. I'm an R user but completely ignorant on
geographical applications.
I need to graph the 5 Continents, one on each graph. How can I do it?
Which packages do I need to have installed and use?.

Thank you,

Rui Barradas

Hello,

This is a really basic question. I'm an R user but completely ignorant 
on geographical applications.
I need to graph the 5 Continents, one on each graph. How can I do it? 
Which packages do I need to have installed and use?.

Thank you,

Rui Barradas

Hi

So, I would advise you: Find nice shapefiles of the world:
http://www.diva-gis.org/datadown
http://spatialanalysis.co.uk/

Then you load it, either :
  library(maptools)
bordures<-readShapeSpatial("10m_cultural/ne_10m_admin_0_countries.shp")

Or better:
library(rgdal)
readOGR(dsn="10m_cultural", layer="ne_10m_admin_0_countries")->bordures

then plot with good limits (here France)
plot(bordures,xlim=c( -4.3,9.1),ylim=c(41,51),axes = TRUE, col="grey")

I hope it helps

Benjamin


On Wednesday, April 29, 2015 09:18 GMT, Rui Barradas <ruipbarradas at sapo.pt> wrote:

Hello,

This is a really basic question. I'm an R user but completely ignorant
on geographical applications.
I need to graph the 5 Continents, one on each graph. How can I do it?
Which packages do I need to have installed and use?.

Thank you,

Rui Barradas

Have you tried package "rworldmap"? It comes with a vignette

install.packages("rworldmap")
library(rworldmap)
vignette("rworldmap")

Another packages that contains world maps is
library(maps)
map()

Cheers,
Roman


On Wed, Apr 29, 2015 at 11:18 AM, Rui Barradas <ruipbarradas at sapo.pt
<mailto:ruipbarradas at sapo.pt>> wrote:

    Hello,

    This is a really basic question. I'm an R user but completely
    ignorant on geographical applications.
    I need to graph the 5 Continents, one on each graph. How can I do
    it? Which packages do I need to have installed and use?.

    Thank you,

    Rui Barradas

Hello,

Thank you. Now I have another problem, when I run the code you've provided error messages occur.

library(maptools)
bordures<-readShapeSpatial("10m_cultural/ne_10m_admin_0_countries.shp")

Error in getinfo.shape(fn) : Error opening SHP file

library(rgdal)
readOGR(dsn="10m_cultural", layer="ne_10m_admin_0_countries")->bordures

Error in ogrInfo(dsn = dsn, layer = layer, encoding = encoding, use_iconv = use_iconv,  :
 Cannot open file


How can I solve this?

Rui Barradas

sessionInfo()

R version 3.2.0 (2015-04-16)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1

locale:
[1] LC_COLLATE=Portuguese_Portugal.1252 LC_CTYPE=Portuguese_Portugal.1252
[3] LC_MONETARY=Portuguese_Portugal.1252 LC_NUMERIC=C 
[5] LC_TIME=Portuguese_Portugal.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] maps_2.3-9      rworldmap_1.3-1 rgdal_0.9-2     maptools_0.8-36
[5] sp_1.1-0

loaded via a namespace (and not attached):
[1] tools_3.2.0     foreign_0.8-63  fields_8.2-1    grid_3.2.0
[5] spam_1.0-1      lattice_0.20-31



Em 29-04-2015 12:23, Gilles Benjamin Leduc escreveu:

Hi

So, I would advise you: Find nice shapefiles of the world:
http://www.diva-gis.org/datadown
http://spatialanalysis.co.uk/

Then you load it, either :
 library(maptools)
bordures<-readShapeSpatial("10m_cultural/ne_10m_admin_0_countries.shp")

Or better:
library(rgdal)
readOGR(dsn="10m_cultural", layer="ne_10m_admin_0_countries")->bordures

then plot with good limits (here France)
plot(bordures,xlim=c( -4.3,9.1),ylim=c(41,51),axes = TRUE, col="grey")

I hope it helps

Benjamin


On Wednesday, April 29, 2015 09:18 GMT, Rui Barradas <ruipbarradas at sapo.pt> wrote:

Hello,

This is a really basic question. I'm an R user but completely ignorant
on geographical applications.
I need to graph the 5 Continents, one on each graph. How can I do it?
Which packages do I need to have installed and use?.

Thank you,

Rui Barradas