Re: [R] image usage
Suppose your data is in image.txt, space delimited (one or more spaces),
then you could use:
myimage -
as.matrix(read.table('image.txt',skip=0,header=FALSE,sep=,strip.white=TRUE))to
view the resulting image use:
image(myimage)
to get contours: contour(myimage)
etc.
--
http://perswww.kuleuven.ac.be/~u0027178/VCard/mycard.php?name=krisn
http://gloveg.kuleuven.ac.be/
Minds are like parachutes, they only work when open
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Re: [R] interpolation methods
Dear, Have a look at: *akima http://cran.r-project.org/src/contrib/akima_0.3-4.tar.gz: Interpolation of irregularly spaced data* Linear or cubic spline interpolation for irregular gridded data Kris -- http://perswww.kuleuven.ac.be/~u0027178/VCard/mycard.php?name=krisn http://gloveg.kuleuven.ac.be/ Minds are like parachutes, they only work when open __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
[R] Contouring irregular xyz data via TIN
Dear, I have XYZ data available in a MySQL database. I get it out, can plot the data with the plot() function, load it into a geoR datastructure. But what I actually would like to do is a simple contouring of the data based on a no Kriging interpolation such as TIN based. I know the first thing I shold do is interpolate a full matrix for the region I have my points for, then contour should do its work. Any idea which function can be used for XYZ interpolations, maybe/hopefully based on a Delaunay triangulation in combination with linear or spline interpolation. Is there a package that allows me to do this? Kris -- http://perswww.kuleuven.ac.be/~u0027178/VCard/mycard.php?name=krisn http://gloveg.kuleuven.ac.be Minds are like parachutes, they only work when open __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
[R] Analysis of AVHRR/VGT timeseries
Dear, Is anyone using R for the analysis of AVHRR or VGT timeseries? We've just started to explore the capabilities of the ts package and are exploring FFT. Any extra resources would be handy. Regards, Kris -- http://perswww.kuleuven.ac.be/~u0027178/VCard/mycard.php?name=krisn http://gloveg.kuleuven.ac.be Minds are like parachutes, they only work when open __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
[R] R on AIX RISC-6000
Dear, has anyone experience compiling R on a cluster of RISC-6000 systems (IBM Scalable Parallel System) with the xlc compiler (version 5)? We discovered we can use such a system at our university and have some processing time problems on Linux and Windows systems (running at 1.8 Ghz an analysis takes us 20 hours for running approx. 2.000.000 logistic regressions). Regards, Kris -- http://perswww.kuleuven.ac.be/~u0027178/VCard/mycard.php?name=krisn Minds are like parachutes, they only work when open __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
[R] geoR vector length error
Dear, we have a problem with geoR. We try to read an ASCII table (x,y,z) with 4 lines. With read.geodata we get the error: Error in vector(double, length) : cannot allocate vector of length 79998 We can read the file without any problem with read.table, but trying to convert it to the geodata class gets the same error. Any help/tips would be appreciated. Kris, Dave -- http://perswww.kuleuven.ac.be/~u0027178/VCard/mycard.php?name=krisn Minds are like parachutes, they only work when open __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
[R] OO programming in R
Dear, I'm looking for some examples on OO programming in R. I have the programming manual with explanation on UseMethod and NextMethod but I miss some practical examples to get me going (I hope). I searched the web but could not find a good independent tutorial on this. Any suggestions are welcome, Kris -- http://perswww.kuleuven.ac.be/~u0027178/VCard/mycard.php?name=krisn Minds are like parachutes, they only work when open __ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help
