search for: drf5n

Hi, I have an array of 2d node locations and an array triangles, and would like to plot something like a image or persp. An example of doing it with rgl is: library(ncdf) library(rgl) # wget http://www.maplepark.com/~drf5n/extras/teapot.nc teapot<-open.ncdf("teapot.nc") z<-get.var.ncdf(teapot,"tris") l<-get.var.ncdf(teapot,"locations") z<-as.vector(z) demo.teapot<-function(x=1){ rgl.triangles(l[1,z],l[2,z],l[3,z]) x<-readline("Hit any key to continue&...

...nice latex graphics. If I don't set a pointsize, the letters aren't clipped, but the graphs are tiny with respect to the x/y labels. Is there something else I should be adjusting instead? Thanks for your time, Dave -- Dave Forrest (434)924-3954w(111B) (804)642-0662h (804)695-2026p drf5n at maplepark.com http://mug.sys.virginia.edu/~drf5n/

...1,length=5)) but for 2d I'd need more constraints. Any suggestions for how to approach this? Is seems like a spatial sampling problem but I'm not sure where to look. Thanks for your time, Dave -- Dr. David Forrest drf at vims.edu (804)684-7900w drf5n at maplepark.com (804)642-0662h http://maplepark.com/~drf5n/

...blue") plot(zz,col=colors(zz[3])) and have a matrix of scatterplots colored by class. The above does not work, of course, but I'm not sure exactly what function I'm looking for. Thank you for your time, Dave, -- Dave Forrest (434)924-3954w(111B) (804)642-0662h (804)695-2026p drf5n at virginia.edu http://mug.sys.virginia.edu/~drf5n/ -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the...

Is anyone using R with postgres? I'd like to do so, but cannot seem to find any reasonable explanation of how to do so. Joshua Gramlich Chicago, IL

Hello all, It seems that the next improvement to the R Graph Gallery is categorization of the graphics, that way each graph will be easier to find. That step should be done *carefully* if we want to avoid the opposite side-effect : graph not reachable through the categories. That's why the wisdom of the R community is required. Graphics will be classified in : - categories -

...? ?png # output only ?bitmap # output only help.search("ppm") |image|graphics|read|png|bitmap all seem like outputs R-data.pdf points the way -- Has anyone imported a graphic file? Thanks for your time, Dave -- Dave Forrest (434)924-3954w(111B) (804)642-0662h (804)695-2026p drf5n at maplepark.com http://mug.sys.virginia.edu/~drf5n/

...3) # "1var" "2var" "3var" # This generates what I expected from the first case: sub('^.','var',11:13) # "var1" "var2" "var3" Dave -- Dr. David Forrest drf at vims.edu (804)684-7900w drf5n at maplepark.com (804)642-0662h http://maplepark.com/~drf5n/

...only=TRUE)) some stuff.... par(pop()) It seems like it wouldn't be difficult, and that someone may have already implemented a set of stack functions, and I wouldn't like to duplicate it. Thanks for your time, Dave -- Dave Forrest (434)924-3954w(111B) (804)642-0662h (804)695-2026p drf5n at virginia.edu http://mug.sys.virginia.edu/~drf5n/

...does many things, but the documentation is hard to patch and improve. And back to my subject: Is producing patches against the authoritative documentation the recommended way to improve the documentation? Dave -- Dave Forrest drf at vims.edu (804)684-7900w drf5n at maplepark.com (804)642-0662h http://maplepark.com/~drf5n/ -------------- next part -------------- diff -ur R-1.9.1-dist/src/library/utils/man/methods.Rd R-1.9.1/src/library/utils/man/methods.Rd --- R-1.9.1-dist/src/library/utils/man/...

My friend Veslot proposed me the Raven ! http://www.teteamodeler.com/allopass/images/corbeau.jpg As a matter of fact the intelligence of this bird is comparable to one of a monkey, although its brain is close to a reptile brain. R is quite the same : small, compact, but so clever. This is a canadian website explaining (in french) the R-aven intelligence

...quiver(u,v) I added these functions as an example to the Wiki: http://fawn.unibw-hamburg.de/cgi-bin/Rwiki.pl?GraphGallery http://fawn.unibw-hamburg.de/cgi-bin/Rwiki.pl?QuiverPlot Thanks for your time, Dave -- Dr. David Forrest drf at vims.edu (804)684-7900w drf5n at maplepark.com (804)642-0662h http://maplepark.com/~drf5n/

...levels xmin<-min(x) xmax<-max(x) 1+floor(n*(x-xmin)/(xmax-xmin)*.999) } x<- -10:10 cbind(x,quantize(x,2),quantize(x),quantize(x,21)) quantize(x,breaks=c(5,7)) # Thanks for your time, Dave -- Dr. David Forrest drf at vims.edu (804)684-7900w drf5n at maplepark.com (804)642-0662h http://maplepark.com/~drf5n/

...im=c(,1)) dev.off() The resultant file has about a 10 pixel margin around these lines, and I'm not sure what parameter or function is controlling this offset. Any hints? Thanks for your time, Dave -- Dr. David Forrest drf at vims.edu (804)684-7900w drf5n at maplepark.com (804)642-0662h http://maplepark.com/~drf5n/

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I have a problem when using nnet to predict the negative values. For example : X = matrix(c(1,1,0,0,1,0,1,0),4,2) X Y = matrix(c(0,1,1,0)) - 0.5 # XOR - 0.5 Y nn = nnet(X,Y,size=3) val = predict(nn,X) val # this is expected to be close to Y, but it's not ! The 'val' is always positive. I tried to change the options, but the result isn't much better. Could someone give me an

I wish to perform brain surgery this afternoon at 4pm and don't know where to start. My background is the history of great statistician sports legends but I am willing to learn. I know there are courses and numerous books on brain surgery but I don't have the time for those. Please direct me to the appropriate HowTos, and be on standby for solving any problem I may encounter while

Hi, I failed to search for R package providing random number generator of "Park and Miller". Anyone know any R package supporting this kind of function? Thanks, Grace -- View this message in context: http://www.nabble.com/Random-Number-Generator-of-Park-and-Miller-tf3636501.html#a10154554 Sent from the R help mailing list archive at Nabble.com.

...t="%Y%m%d %H:%M",tz="UTC")+3600*3 [1] "2006-12-01 04:02:00 EST" Or am I doing something wrong with the strptime(..., tz="EST") function? Thanks for your time, Dave -- Dr. David Forrest drf at vims.edu (804)684-7900w drf5n at maplepark.com (804)642-0662h http://maplepark.com/~drf5n/

...here are about 30 different islands. Maptools seems devoted to shapefiles, and it is unclear how to create 'polylists'. Is there a good way to manage and graph data defined on irregular grids? Dave -- Dr. David Forrest drf at vims.edu (804)684-7900w drf5n at maplepark.com (804)642-0662h http://maplepark.com/~drf5n/