R help - Feb 2011 - (no subject)

What is plot.new? and how can i get it to work so i can load other data?
> library(splancs)
> area = 6*4
> lambda = 1.5
> N = rpois(1,lambda*area)
> u = runif(N,-2,4)
> v = runif(N,0,4)
> plot(u,v,asp=1)
> h = chull(u,v)
> h = c(h,h[1])
> plot(u[h],v[h],"1",asp=1)
Error in plot.xy(xy, type, ...) : invalid plot type
'1'
> plot(u[h],v[h],"l",asp=1)
> points(u,v)
Error in plot.xy(xy.coords(x, y), type = type, ...) : 
 plot.new has not been called yet
> pts=as.points(u,v)
> pointmap(pts)
> hullpoly=as.points(u[h],v[h])
> polymap(hullpolly,add=TRUE)
Error in xy.coords(x, y) : object 'hullpolly' not
found
> help(polymap)
> help(plot.net)
No documentation for 'plot.net' in specified packages and libraries:
you could try '??plot.net'
> help(plot.new)
> plot(u[h],v[h],"l",asp=1)
> plot.new(u,v)
Error in plot.new(u, v) : unused argument(s) (u, v)
> plot.new()
> points(u,v)
Error in plot.xy(xy.coords(x, y), type = type, ...) : 
 plot.new has not been called yet
> plot.new(u,v)
Error in plot.new(u, v) : unused argument(s) (u, v)
> plot.new(xy.coords(x,y))
Error in plot.new(xy.coords(x, y)) : unused argument(s) (xy.coords(x,
y))
> plot.new(uv.coords(u,v))
Error in plot.new(uv.coords(u, v)) : unused argument(s) (uv.coords(u,
v))
> plot.new <- function() 
+ {}
> { }
NULL
> plot.new <- function()
+ { }
> { }
NULL
> { for }
Error: unexpected '}' in "{ for }"
> area = 60*20
> lambda = 2
> N = rpois(1,lambda*area)
> u = runif(N,20,40)
> v = runif(N,-10,10)
> plot(u,v,asp=1)
> 
> plot(u,v,asp=1)
> u = runif(N,20,40)
> v = runif(N,-10,10)
> plot(u,v,asp=1)
> 
> plot(u,v,asp=1)
> u = runif(N,20,40)
> v = runif(N,-10,10)
> plot(u,v,asp=1)
> u = runif(N,20,40)
> v = runif(N,-10,10)
> plot(u,v,asp=1)
> h = chull(u,v)
> h = c(h,h[1])
> plot(u[h],v[h],"l",asp=1)
> points(u,v)
Error in plot.xy(xy.coords(x, y), type = type, ...) : 
 plot.new has not been called yet
> pts=as.points(u,v)
> pointmap(pts)
> hullpoly=as.points(u[h],v[h])
> polymap(hullpolly,add=TRUE)
Error in xy.coords(x, y) : object 'hullpolly' not found
No help files found matching ?hullpoly? using fuzzy
matching
> pointmap(as.points(hullpoly), add=TRUE)
Error in plot.xy(xy.coords(x, y), type = type, ...) : 
 plot.new has not been called yet
> hullpoly=as.points(u[h],v[h])
> polymap(hullpoly$poly, add=TRUE)
Error in hullpoly$poly : $ operator is invalid for atomic
vectors
> polymap(hullpoly,add=TRUE)
Error in polygon(poly, ...) : plot.new has not been called
yet
> plot.new()
NULL
> par(new=TRUE)
Warning message:
In par(new = TRUE) : calling par(new=TRUE) with no plot
> plot.new()
NULL
> par(new=TRUE)
Warning message:
In par(new = TRUE) : calling par(new=TRUE) with no plot
> new.u=runif(50,20,40)
> new.v=ruinf(50,-10,10)
Error: could not find function "ruinf"
> new.v=runif(50,-10,10)
> pts.in=pip(as.points(new.u,new.v),hullpoly,out=FALSE)
> pointmap(pts.in,col="red",add=TRUE)
Error in plot.xy(xy.coords(x, y), type = type, ...) : 
 plot.new has  not been called yet

Please start R and enter the following commands:

library(splancs)
area = 6*4
lambda = 1.5
N = rpois(1,lambda*area)
u = runif(N,-2,4)
v = runif(N,0,4)
h = chull(u,v)
h = c(h,h[1])
plot(u[h],v[h],"l",asp=1)
points(u,v)

If you do not get the plot you're expecting, then
repost
   1) adding an informative subject line
   2) showing us what you tried without including
      your typos and other errors.

I think you'll find this a more effective strategy than
trying to replace core elements of R that you don't
understand with empty functions.

 					- Phil Spector
 					 Statistical Computing Facility
 					 Department of Statistics
 					 UC Berkeley
 					 spector at stat.berkeley.edu


On Mon, 21 Feb 2011, Schmidt, Lindsey C (MU-Student) wrote:
> What is plot.new? and how can i get it to work so i can load other data?
>
>> library(splancs)
>> area = 6*4
>> lambda = 1.5
>> N = rpois(1,lambda*area)
>> u = runif(N,-2,4)
>> v = runif(N,0,4)
>> plot(u,v,asp=1)
>> h = chull(u,v)
>> h = c(h,h[1])
>> plot(u[h],v[h],"1",asp=1)
> Error in plot.xy(xy, type, ...) : invalid plot type '1'
>> plot(u[h],v[h],"l",asp=1)
>> points(u,v)
> Error in plot.xy(xy.coords(x, y), type = type, ...) :
> plot.new has not been called yet
>> pts=as.points(u,v)
>> pointmap(pts)
>> hullpoly=as.points(u[h],v[h])
>> polymap(hullpolly,add=TRUE)
> Error in xy.coords(x, y) : object 'hullpolly' not found
>> help(polymap)
>> help(plot.net)
> No documentation for 'plot.net' in specified packages and
libraries:
> you could try '??plot.net'
>> help(plot.new)
>> plot(u[h],v[h],"l",asp=1)
>> plot.new(u,v)
> Error in plot.new(u, v) : unused argument(s) (u, v)
>> plot.new()
>> points(u,v)
> Error in plot.xy(xy.coords(x, y), type = type, ...) :
> plot.new has not been called yet
>> plot.new(u,v)
> Error in plot.new(u, v) : unused argument(s) (u, v)
>> plot.new(xy.coords(x,y))
> Error in plot.new(xy.coords(x, y)) : unused argument(s) (xy.coords(x, y))
>> plot.new(uv.coords(u,v))
> Error in plot.new(uv.coords(u, v)) : unused argument(s) (uv.coords(u, v))
>> plot.new <- function()
> + {}
>> { }
> NULL
>> plot.new <- function()
> + { }
>> { }
> NULL
>> { for }
> Error: unexpected '}' in "{ for }"
>> area = 60*20
>> lambda = 2
>> N = rpois(1,lambda*area)
>> u = runif(N,20,40)
>> v = runif(N,-10,10)
>> plot(u,v,asp=1)
>>
>> plot(u,v,asp=1)
>> u = runif(N,20,40)
>> v = runif(N,-10,10)
>> plot(u,v,asp=1)
>>
>> plot(u,v,asp=1)
>> u = runif(N,20,40)
>> v = runif(N,-10,10)
>> plot(u,v,asp=1)
>> u = runif(N,20,40)
>> v = runif(N,-10,10)
>> plot(u,v,asp=1)
>> h = chull(u,v)
>> h = c(h,h[1])
>> plot(u[h],v[h],"l",asp=1)
>> points(u,v)
> Error in plot.xy(xy.coords(x, y), type = type, ...) :
> plot.new has not been called yet
>> pts=as.points(u,v)
>> pointmap(pts)
>> hullpoly=as.points(u[h],v[h])
>> polymap(hullpolly,add=TRUE)
> Error in xy.coords(x, y) : object 'hullpolly' not found
> No help files found matching ?hullpoly? using fuzzy matching
>> pointmap(as.points(hullpoly), add=TRUE)
> Error in plot.xy(xy.coords(x, y), type = type, ...) :
> plot.new has not been called yet
>> hullpoly=as.points(u[h],v[h])
>> polymap(hullpoly$poly, add=TRUE)
> Error in hullpoly$poly : $ operator is invalid for atomic vectors
>> polymap(hullpoly,add=TRUE)
> Error in polygon(poly, ...) : plot.new has not been called yet
>> plot.new()
> NULL
>> par(new=TRUE)
> Warning message:
> In par(new = TRUE) : calling par(new=TRUE) with no plot
>> plot.new()
> NULL
>> par(new=TRUE)
> Warning message:
> In par(new = TRUE) : calling par(new=TRUE) with no plot
>> new.u=runif(50,20,40)
>> new.v=ruinf(50,-10,10)
> Error: could not find function "ruinf"
>> new.v=runif(50,-10,10)
>> pts.in=pip(as.points(new.u,new.v),hullpoly,out=FALSE)
>> pointmap(pts.in,col="red",add=TRUE)
> Error in plot.xy(xy.coords(x, y), type = type, ...) :
> plot.new has  not been called yet
> ______________________________________________
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>

On 02/22/2011 03:31 AM, Schmidt, Lindsey C (MU-Student)
wrote:
> What is plot.new? and how can i get it to work so i can load other data?
>
Hi Lindsey,
It looks to me as though spelling mistakes in your code are causing 
failures to generate some of the objects that you then pass to "plot".
The plot command fails because it can't find one of the objects. When 
you then ask for an enhancement to the plot that doesn't exist, you get 
the "plot.new" error. For instance:

# something wrong with the creation of "hullpoly"
 > hullpoly=as.points(u[h],v[h])
...
Error in xy.coords(x, y) : object 'hullpolly' not found

# this fails to create "new.v" (should be "runif")
 > new.v=ruinf(50,-10,10)
Error: could not find function "ruinf"

When you have a string of plot commands that depend upon the creation of 
some initial variable, if that variable doesn't get created, they will 
all fail, setting you up for the "plot.new" error which is complaining
about the absence of one or more plots that weren't displayed in the 
first place.

Jim