[R] contourLines() documentation
Hello, I have searched for documentation on the function contourLines's algorithm but cannot find a thing. I am about to submit a paper to a journal but cannot yet do so because I need to provide some reference for this function. Does anyone know what algorithm is used for this function? Thanks, Derek Lacoursiere -- View this message in context: http://www.nabble.com/contourLines%28%29-documentation-tp25151467p25151467.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] re ference
Hello R users,
I have developed code in R that generates populations of non-overlapping
random polygons ("polygonal maps") for testing certain stereological
estimation methods. I have tried to look for articles or papers online on
the generation of random polygonal maps and have found very little. There
seems to be a much greater concern with generating single random polygons
rather than whole maps of random polygons. Does anyone have an idea of
where I should look or what keywords to use in my search?
I really appreciate your patience with R novices like myself.
--
View this message in context:
http://www.nabble.com/reference-tp24467408p24467408.html
Sent from the R help mailing list archive at Nabble.com.
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[R] Error: argument is of length zero
Hi,
I have the following:
for(j in (y.raw+1):(rownum-1)){
valsum<-tstfframed[min.x,j]+tstfframed[min.x,j+1]
if(valsum == 1){
cat("valsum loop")
int.num<-int.num+1
}
}
but I get the error message: "Error in if (valsum == 1) { : argument is of
length zero". I checked whether to see if all the stated variables have
associated values (and are not NAs) and every variable (even valsum!) has a
value. I have no idea where my error is. Can you help me?
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
[R] gpc.poly datatype
I have a list of polygons generated by the contourLines() command (each object of the list is a list in itself with two objects: a vector of x values, and a vector of y values for each vertex). I wish to convert that list into a gpc.poly object of multiple contours. How do I do this? gpclib apparently has no method of coercing lists into the gpc.poly object type. As well, when I have a gpc.poly object, I can view the points using the get.pts() command, but cannot find a way of only extracting the x values of a polygon (or the y values, for that matter). How do I do this? Any help would be greatly appreciated -- View this message in context: http://www.nabble.com/gpc.poly-datatype-tp23967664p23967664.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] driver file
Hi, How can I, from a single "driver" file, source other files in such a way that I can access their functions with parameters defined in my "driver" file? I wish to do this to avoid creating a single, self-contained but clunky piece of code. I have searched and found functions such as file(), pipe(), open(), found manuals on creating my own packages, etc. but I become increasingly aware that I don't know exactly what I am looking for (that I am a "neophyte"). Help would be appreciated Derek -- View this message in context: http://www.nabble.com/driver-file-tp24171201p24171201.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
