[R] maptools package

[Jonathan P Daily]

I know the default plot() method expects dat$x and dat$y to exist and be 
equal if you simply try

> plot(dat)

Try looking at
> methods(plot)
to see if there is a specified method from maptools,
then check documentation on ?plot.methodfrommaptools

Otherwise, check spb for $x and $y objects.
--------------------------------------
Jonathan P. Daily
Technician - USGS Leetown Science Center
11649 Leetown Road
Kearneysville WV, 25430
(304) 724-4480
"Is the room still a room when its empty? Does the room,
 the thing itself have purpose? Or do we, what's the word... imbue it."
     - Jubal Early, Firefly



From:
Aleksandr Andreev <aleksandr.andreev at gmail.com>
To:
r-help at r-project.org
Date:
11/10/2010 01:10 PM
Subject:
[R] maptools package
Sent by:
r-help-bounces at r-project.org



A few years back, I wrote some code to plot maps with the maptools
package. Now I am trying to reproduce my results, only to find out
that maptools has been updated and my code no longer works.

I've been able to fix the first part of it by forcing
spb <- maptools:::read.shape("/home/sasha/Documents/maps/spb.shp")

(as read.shape has been deprecated)

but now when I do
plot(spb, xlab="Longitude", ylab="Latitude", main="Map of St
Petersburg, Russia")

I get the message
Error in xy.coords(x, y, xlabel, ylabel, log) :
  'x' is a list, but does not have components 'x' and 'y'

What's the new syntax that I'm supposed to use?

I'm using R version 2.12.0 (2010-10-15) on x86_64-pc-linux-gnu (64-bit)

Thanks,

------------------------
Aleksandr Andreev
Graduate Student - Department of Economics
University of North Carolina at Chapel Hill
Mobile: +1 303 507 93 88
Skype: typiconman

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