adick
2012-Feb-20 19:15 UTC
[R] error with persp()- increasing 'x' and 'y' values expected
I want to use persp to graph my data and it keeps giving me the error
increasing 'x' and 'y' values expected, even though my data is
in increasing
order with respect to x and y.
Here is the code I'm currently using:
bob= scan ("SBA3dataTaxonB.txt",what="char")
labels = bob[1:3]
bob=bob[-c(1,2,3)]
bob=as.numeric(bob)
bob=array(bob,dim=c(3, length(bob)/3))
bob=t(bob)
data.frame(bob) -> bob
bob = bob[order(bob[,1], bob[,3]),]
persp(bob[,1], bob[,3], bob[,2], log="bob[,1]")
The first few lines of the txt file SBA3dataTaxonB.txt look like this:
variable TaxonB central
10 19 0.002
10 25 0.002
10 26 0.002
1 17 0.002
1 23 0.002
1 16 0.002
0.1 48 0.002
0.1 47 0.002
0.1 57 0.002
10 15 0.004
10 22 0.004
10 22 0.004
1 21 0.004
1 22 0.004
1 27 0.004
0.1 73 0.004
0.1 62 0.004
Can anyone help me figure out why I am getting this error? And also a
possible solution would be greatly appreciated.
-Thanks, Amanda
--
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David Winsemius
2012-Feb-20 20:22 UTC
[R] error with persp()- increasing 'x' and 'y' values expected
On Feb 20, 2012, at 2:15 PM, adick wrote:> I want to use persp to graph my data and it keeps giving me the error > increasing 'x' and 'y' values expected, even though my data is in > increasing > order with respect to x and y.Do you have missing entries? (Running your data fragment through your code produces the same error.) You may want to use rep with each and times arguments to construct a regular grid and then population the missing entries in matrix with NA's.> > Here is the code I'm currently using: > bob= scan ("SBA3dataTaxonB.txt",what="char") > labels = bob[1:3] > bob=bob[-c(1,2,3)] > bob=as.numeric(bob) > bob=array(bob,dim=c(3, length(bob)/3)) > bob=t(bob) > data.frame(bob) -> bob > bob = bob[order(bob[,1], bob[,3]),] > persp(bob[,1], bob[,3], bob[,2], log="bob[,1]")Any way .... The z argument to `persp` is supposed to be a matrix of dimension == length(x)*length(y): ?matrix> > The first few lines of the txt file SBA3dataTaxonB.txt look like this: > variable TaxonB central > 10 19 0.002 > 10 25 0.002 > 10 26 0.002 > 1 17 0.002 > 1 23 0.002 > 1 16 0.002 > 0.1 48 0.002 > 0.1 47 0.002 > 0.1 57 0.002 > 10 15 0.004 > 10 22 0.004 > 10 22 0.004 > 1 21 0.004 > 1 22 0.004 > 1 27 0.004 > 0.1 73 0.004 > 0.1 62 0.004 > > Can anyone help me figure out why I am getting this error? And also a > possible solution would be greatly appreciated. > -Thanks, Amanda > > -- > View this message in context: http://r.789695.n4.nabble.com/error-with-persp-increasing-x-and-y-values-expected-tp4404834p4404834.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help at 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.David Winsemius, MD West Hartford, CT