similar to: Filled contour plot showing labeled isolines?

Dear R users, I am working with netcdf data of NCEP/NCAR Climate Reanalysis. R does have capability to draw isolines using "contour". However, I need not to draw but to export contours in any vector format. Is it possible? Thank you.

Hi R-help community, Can anyone tell me why, while using : x <- seq(as.Date("2001-01-01"),as.Date("2001-01-01") + nrow(volcano)-1,1) y <- seq(1, ncol(volcano),1) when I plot the volcano matrix with that command : filled.contour(x,y,volcano) the graph has a Date format on X-axis, ok ... ... but when adding a contour plot to the filled contour, using this

Hi! Whenever I save a graphic in ps/eps format generated by filled.contour or image, an undesired grid is added to it (not visible on the X11 screen). For example: postscript("volcano.eps") filled.contour(volcano,col=gray(seq(0,1,,50)),levels=seq(min(volcano),max(volcano),,50)) dev.off() Any ideia how to eliminate this grid? Thanks, Rachel [[alternative HTML version deleted]]

Dear all, I am using filled.contour and my x-axis consists of a vector of dates, formatted using as.POSIXct. When I assign this vector to x in filled.contour, the x-axis in the plot is correctly formatted as dates. However, when I use plot.axes=axis(1) in filled.contour the x-axis is not correctly formatted. I need to opt for the latter because I want to add additional lines and points to the

Dear all, I would like to generate a filled.contour plot with log x and y axis, however using: filled.contour(as.line,log="xy") results in a warning message. Does anybody knos what to do? Thanks Thomas

Hello, I would like to generate isolines of temperature for the 24 hours by the 12 month. Something like hier: http://www.diercke.de/bilder/omeda/800/12351E.jpg. On the x-axis are the month and on the y-axis the 24 hours, than as contour lines the temperature. My data are: 'data.frame': 288 obs. of 3 variables: $ Group.1: num 0 1 2 3 4 5 6 7 8 9 ... $ Group.2: num 1 1 1 1 1 1 1

Quick question - I am having problems creating an orographic image (similar to volcano example). I have created a map matrix with 3 columns and over 2million rows. I have created the matrix as follows: map<-read.table("map.dat",header=TRUE) long.grid<-sort(unique(map$long) lat.grid<-sort(unique(map$lat) map.matrix<-matrix(map$height,nrow=length(lat.grid),byrow=TRUE) The

Hello everybody, Could anybody give me a hint how I can use "layout" and "filled.contour" (or "image" plot with a color legend) together, please? What I want to do is something like the following example (Two or more plots with a legend for each at one page): data(volcano) layout(matrix(1:2, 1, 2, byrow = TRUE)) for (i in 1:2) { filled.contour(i*volcano, color =

Dear R-Help community, I am trying to overlay a single contour line over a correlation plot using levelplot in the lattice package. These are the two arrays: 1) a correlation plot over Africa - so each grid square is a different colour dependent on correlation - this is in an array: result_cor with dim[465,465] 2) a single contour line from a ***different data source*** - this is from data

I am trying to create a topographic map of an island - the filled.contour function works fine except i am experiencing difficulty trying to represent the sea properly. Basically I want the default colour blue for any instance where z=0, if I simply use the default topo.color I get shades of blue for z values up to 220 metres. Is there a way in which I can specify terrain.color for all values of

Hi, I try to put an arrow to a filled.contour plot. I make this: filled.contour(volcano, color = terrain.colors,key.axes=F) arrows(0.95,0,0.95,1,lwd=2) This work, but the problem is that I find the coordinates at random try, for other graphic with other scale is other fight with coordinates. Anybody know a more easy or more generalized way to make this? Somethink like this

Requisite info: R version 2.11.1 (2010-05-31) running on a 64 bit HP Windows 7 machine. Greetings, R-ians: I have used contour() for several years. Now I would like to extract from a contour plot the x, y coordinates of a contour z=constant. This seems as though it would be straight-forward but I''ve been unsuccessful in my searches of CRAN. Can anyone provide a hint?

Dear All, I was looking for the color index in?image function,?such as from topo.colors(n) and etc. but still never found it. For instance, from the help menu. ########################################### # Volcano data visualized as matrix. Need to transpose and flip # matrix horizontally. image(t(volcano)[ncol(volcano):1,]) # A prettier display of the volcano x <- 10*(1:nrow(volcano)) y

Hi I'm using lattice's function levelplot but when I choose the flag contour =TRUE I get very strange results. It looks like the contour lines have nothing to do with the "image" plot under ... Is there some known problem with this function ? Regards EJ -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read

Hi all, I have a few questions on color image in R (I'm using 0.90.1 on NT4). 1. How do I get a color key on the plot? 2. What I'd like to have is 0=white, 1=red, -1=blue (or any other color), and numbers in between represented by different shade (e.g., 0.1 would be light pink, -0.1 would be light blue, etc.). Is this possible? Thanks for any help any of you can provide. Regards,

Hi I have just upgraded from R2.6.0 to R2.7.1 (running on Windows) and a part of my code that previously ran ok now gives an error. The following is a simple example to demonstrate my problem. > a <- array(c(1,2,3,4,5,6,rep(NA,6)),dim=c(6,2)) > apply(a,2,sd,na.rm=T) In R2.6.0 this gives (which is what I would like) [1] 1.870829 NA In R2.7.1 it gives the following error

Hello there, I am creating a series of images using levelplot but I also want to overlay a contour for a particular value as reference. Here is the levelplot command for the image: print(levelplot(d~x+y,data=t,cuts=20,scales=list(draw=F),xlab=NULL,ylab= NULL,col.regions=heat.colors(100)[100:1]),split=c(1,1,1,1),more=T) and then to add the contour plot (I only want a contour at level 5):

Hi, I would like to add contour lines to a (trellis/lattice-) levelplot. Sure, there is the "contour=TRUE" argument, but this uses "cuts=..." (which is usually chosen very high for my plots. I guess cuts=99 is the best you can do (?)) for plotting the contour lines. Furthermore, I do not like the numbering of the contour lines this way. Therefore, I tried to add a

Dear R-help members, I am trying to plot annotate a filled contours plot (with filled.contour) with a grid of points. I have read ways of annotating it with individual points but not with grids in another matrix. Any ideas? Thank you very much. Dario ___________________________________ Dario Martin-Benito CIFOR-INIA Dpto. Sistemas y Recursos

Full_Name: Detlef Steuer Version: 0.90.0 and 0.99.0 OS: linux Submission from: (NULL) (129.217.206.26) filled.contour does not work on my machine in versions 0.90.0 and 0.99.0 I always get: Error in plot.new() : Figure margins too large Here an example from help(filled.contour): ( same message for 0.99.0) R : Copyright 1999, The R Development Core Team Version 0.90.0 (November 22, 1999) R is