R help - Jan 2005 - how to produce 2-d color plots in R

Hello 'R' Users,

I am very new on 'R', so excuse me if I ask something wrong.

I have ASCII data and the colums of the data are looks like :-


!-------------------------
time,yr,mo,dy,hr,min,sec,lat,lon,ht,co2obs,sigma,co2model
--
-
--

!----------------------------

Each column has data value. Now I want to produce 2-d color maps,
for example the plot should look like :-

on x-axis =lon    ,   on y-axis=lat

and on these two axis I want to shade  or fill co2model values.

Also, after ploting how I can draw the continent line, for
example the data belongs North America, so how the plot
recognise the continent line.

Can this type of color plot is possible in R.

Pls help !!!


Many thanks in advance,

Regarda,
Yogesh

-

==========================================Yogesh K. Tiwari,
Max-Planck Institute for Biogeochemistry,
Beutenberg Campus, Hans-Knoell-Strasse 10,
D-07745 Jena,
Germany

Office   : 0049 3641 576376
Home     : 0049 3641 223163
Fax      : 0049 3641 577300
Handy    : 0049 173 698 8789
e-mail   : yogesh.tiwari at bgc-jena.mpg.de

Cut and paste the following function (to be in next release of R, I believe)
and type:

RSiteSearch("election maps")

This, of course, assumes that you have Internet connection.

Andy

RSiteSearch <- function(string,
                       
restrict=c("Rhelp02a","Rhelp01","functions","docs"),
                        format="normal", sortby="score",
matchesPerPage=20)
{
    string <-
paste("http://finzi.psych.upenn.edu/cgi-bin/namazu.cgi?query=",
                    gsub(" ", "+", string),
sep="")
    mpp <- paste("max=", matchesPerPage, sep="")

    format <- charmatch(format, c("normal", "short"))
    if (format == 0) stop("format must be either normal or short")
    format <- paste("result=", switch(format, "normal",
"short"), sep="")

    sortby <- charmatch(sortby, c("score", "date:late",
"date:early",
                                  "field:subject:ascending",
"field:subject:decending",
                                  "field:from:ascending",
"field:from:decending",
                                  "field:size:ascending",
"field:size:decending",
                                  "field:uri:ascending",
"field:uri:decending",))
    if (sortby == 0) stop("wrong sortby specified")
    sortby <- paste("sort=",
                    switch(sortby, "score", "date:late",
"date:early",
                                  "field:subject:ascending",
"field:subject:decending",
                                  "field:from:ascending",
"field:from:decending",
                                  "field:size:ascending",
"field:size:decending",
                                  "field:uri:ascending",
"field:uri:decending"),
                    sep="")

    res <- ""
    if ("Rhelp02a" %in% restrict) res <-
"idxname=Rhelp02a"
    if ("Rhelp01" %in% restrict) res <-
paste(res,"idxname=Rhelp01",sep="&")
    if ("docs" %in% restrict) res <-
paste(res,"idxname=docs",sep="&")
    if ("functions" %in% restrict) res <-
paste(res,"idxname=functions",sep="&")
    if (res=="") {print("Using defaults: Rhelp 2002-; functions;
docs.")
      res <-
paste("idxname=Rhelp02a&idxname=functions&idxname=docs",sep="")}
    res <- sub("^&+","",res)

    qstring <- paste(string, mpp, format, sortby, res, sep="&")
    browseURL(qstring)
    invisible(qstring)
}




> From: Yogesh K. Tiwari
> 
> Hello 'R' Users,
> 
> I am very new on 'R', so excuse me if I ask something wrong.
> 
> I have ASCII data and the colums of the data are looks like :-
> 
> 
> !-------------------------
> time,yr,mo,dy,hr,min,sec,lat,lon,ht,co2obs,sigma,co2model
> --
> -
> --
> 
> !----------------------------
> 
> Each column has data value. Now I want to produce 2-d color maps,
> for example the plot should look like :-
> 
> on x-axis =lon    ,   on y-axis=lat
> 
> and on these two axis I want to shade  or fill co2model values.
> 
> Also, after ploting how I can draw the continent line, for
> example the data belongs North America, so how the plot
> recognise the continent line.
> 
> Can this type of color plot is possible in R.
> 
> Pls help !!!
> 
> 
> Many thanks in advance,
> 
> Regarda,
> Yogesh
> 
> -
> 
> ==========================================> Yogesh K. Tiwari,
> Max-Planck Institute for Biogeochemistry,
> Beutenberg Campus, Hans-Knoell-Strasse 10,
> D-07745 Jena,
> Germany
> 
> Office   : 0049 3641 576376
> Home     : 0049 3641 223163
> Fax      : 0049 3641 577300
> Handy    : 0049 173 698 8789
> e-mail   : yogesh.tiwari at bgc-jena.mpg.de
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! 
> http://www.R-project.org/posting-guide.html
> 
>