Displaying 5 results from an estimated 5 matches for "mappolys".
2005 Feb 09
1
FW: Drawing maps of UK
Hi Guys
Thanks for this! As I am a beginner, I bet I'm running into some really
basic problems. Using the example from the Map2poly function in
maptools:
try <- read.shape("euadmll.shp")
mappolys <- Map2poly(try)
# this produces 14 warnings() of the type:
# 1: level 2 circularity at 62 in: .mtlbuild(.mtafters(r1), rD) # etc #
14: From next release, default hole handling will change in:
Map2poly(try)
plot(mappolys)
Gives an error:
Error in plot.polylist(mappolys) : malformed plot order...
2006 Oct 07
3
merge and polylist
...ode is:
#________________________________________________________
dat=data.frame(read.delim(file="all.txt", header = TRUE, sep = "\t",
quote="\"", dec=".",na.strings = "NA"))
nc=read.shape("astae.shp", dbf.data=TRUE, verbose=TRUE)
mappolys=Map2poly(nc)
submap <- subset(mappolys, nc$att.data$NAME!="Honolulu, HI")
nc$att.data=subset(nc$att.data, nc$att.data$NAME!="Honolulu, HI")
nc$att.data[,1]=as.numeric(paste(nc$att.data$MSACMSA))
#attributes(nc$att.data)
nc$att.data=merge(nc$att.data, dat, by.x="AREA...
2003 Oct 22
4
adjacency matrix
Dear R experts,
I am new to the list and R software. I need to convert arcview file to Winbugs having R has middle package. Got from friends that it is possible following the steps:
1. Converting arcview shapefile to "cgm clear text file"
2. Downloading "convert.r" to into R
2.1 use source("convert.r")
2.2 convert("filename_cgm") without the
2005 Mar 09
3
from long/lat to UTM
Hi:
Is there any function in R which can convert the
long/lat to UTM(Universal Transverse Mercator)?
There are quite a few converters on Internet.
However, the interface is designed as input->output
which I can not convert lots of locations at the same
time.
Another question is whether there is a function in R
which can tell the time zone from the location's
lat/long?
Thank you!
2005 Jul 26
2
grep help needed
Hi,
In another thread ("PBSmapping and shapefiles") I asked for an easy
way to read "shapefiles" and transform them in data that PBSmapping
could use. One person is exploring some ways of doing this, but it is
possible I'll have to do this "manually".
With package "maptools" I am able to extract the information I need
from a shapefile but it is