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Hi all im new at this list, i have a problem when i make an ajax call inside a json object. Whe i test using IE works but when i use firefox nothing happend. you can see the problem at: http://mandela.no-ip.info/prototypeproblem/index.html I appreciate any kind of help / suggestion thanx in advance. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Spinoffs" group. To post to this group, se...

...types of plot in the manner in which they depict the relationship between explanatory variables and the response variable ? Thank you inav for your help. Regards, Mark Difford. ------------------------------------------------------------- Mark Difford Ph.D. candidate, Botany Department, Nelson Mandela Metropolitan University, Port Elizabeth, SA.

...[5] LC_TIME=English_South Africa.1252 attached base packages: [1] stats graphics grDevices utils datasets methods base loaded via a namespace (and not attached): [1] tools_2.14.0 ----- Mark Difford (Ph.D.) Research Associate Botany Department Nelson Mandela Metropolitan University Port Elizabeth, South Africa -- View this message in context: http://r.789695.n4.nabble.com/Graphical-option-to-update-packages-in-development-version-build-of-the-2011-07-31-r56569-for-Windowy-tp3718847p3718847.html Sent from the R devel mailing list archive at Nabble.com.

...nts(pca1$scores[,1:2], col=r.cols , pch=20) legend(-8, 2.95, sm, col = r.cols, text.col = "black", lty = NULL, pch = 20,horiz = F,) -- M.J. Sonnekus PhD Candidate (The Phytoplankton of the southern Agulhas Current Large Marine Ecosystem (ACLME)) Department of Botany South Campus Nelson Mandela Metropolitan University PO Box 77000 Port Elizabeth South Africa 6031 Cell: 082 080 9638 E-mail: tsonnekus@gmail.com [[alternative HTML version deleted]]

...elow. *Or *if there is a way I can rearrange the yaxis in the order surface, shallow, deep, fmax and below. Any suggestions? Thank you Tinus -- M.J. Sonnekus PhD Candidate (The Phytoplankton of the southern Agulhas Current Large Marine Ecosystem (ACLME)) Department of Botany South Campus Nelson Mandela Metropolitan University PO Box 77000 Port Elizabeth South Africa 6031 Cell: 082 080 9638 E-mail: tsonnekus@gmail.com [[alternative HTML version deleted]]

...g to do this are to be able to include non-linear terms in the model, using say restricted or natural cubic splines. Thank you in advance for your help. Regards, Mark Difford. --------------------------------------------------------------- Mark Difford Ph.D. candidate, Botany Department, Nelson Mandela Metropolitan University, Port Elizabeth, SA.

Hi all, I'm trying to do model reduction for logistic regression. I have 13 predictor (4 continuous variables and 9 binary variables). Using subject matter knowledge, I selected 4 important variables. Regarding the rest 9 variables, I tried to perform data reduction by principal component analysis (PCA). However, 8 of 9 variables were binary and only one continuous. I transformed the data by

Hi: I have a large dataset mydata, of 1000 rows and 1000 columns. The rows have gene names and columns have condition names (cond1, cond2, cond3, etc). mydata<- read.table(file="c:/file1.mtx", header=TRUE, sep="") I applied PCA as follows: data_after_pca<- prcomp(mydata, retx=TRUE, center=TRUE, scale.=TRUE); Now i get 1000 PCs and i choose first three PCs and make a

...that if you are using a data.frame() as your data object you will need to supply a 'primary' statement to augPred(), e.g. augPred(test.1, primary=~PO4). Regards, Mark Difford. --------------------------------------------------------------------- Ph.D. candidate, Botany Department, Nelson Mandela Metropolitan University, Port Elizabeth, SA.

Hello, I'm using the R-2.13.1 version in Windows and I'm trying to do a robust Pca with the following: x<-matrix(0.5,30,30) library("rrcov") y<-PcaCov(x) The following error occurs: Error: diff(sv)<0 ist not all TRUE The same error occurs with the other functions. What does this mean and how can I perform the robust PCA with these functions by using a quadratic

...oefficients are now calculated relative to my reference Site (treatment.contrasts), *but* that my TideCode levels now relate to their reference level within Site. Is that correct? Thank you in advance for help. Regards, Mark Difford. Mark Difford Ph.D. candidate, Botany Department, Nelson Mandela Metropolitan University, Port Elizabeth, SA.

...one is examining in more detail in a set of lattice plots. Regads,. Mark Difford. PS: (Andreas Loffler has implemented a simple but functional version for TeX/LaTeX: http://www.tug.org/tex-archive/help/Catalogue/entries/sparklines.html) Mark Difford Ph.D. candidate, Botany Department, Nelson Mandela Metropolitan University, Port Elizabeth, SA.

...you how to do this. Suggest you do some work in that area. Look especially at how model formulas are used/specified. This is at least one area where you have gone wrong, as the error message clearly tells you. Good luck. Mark. ----- Mark Difford (Ph.D.) Research Associate Botany Department Nelson Mandela Metropolitan University Port Elizabeth, South Africa -- View this message in context: http://r.789695.n4.nabble.com/Multinomial-Logistical-Model-tp3548239p3549611.html Sent from the R help mailing list archive at Nabble.com.

Hi Users, I am trying to plot 95% confidence ellipses around the 4 groupings found in a PCA ordination and identified a-priori by clustering. I am using ordiellipse to plot the ellipses and it works fine except one of my groups contains only 2 sites and I cannot get an ellipse around them. I'm assuming that 2 points is not enough to perform the relevant calculations here, however I would like

I've read something about this problem, but I don't know how can i avoid this problem. Why the order of the factors give different results? I suppose it's because the order of the factors, i've just changed "lcc" from the first position to the last in the model, and the significance change completely >

Hi, I have a problem with the ordered probit model -polr function (library MASS). My independent variables are countinuos. I am not able to understand two main points: a) how to calculate marginal effects b) how to calculate the relative importance of each independent variables If required i will attach my model output. Thanks Franco

...ion that binds and listens on a TCP socket. To add security, I'd like to embed ssh/sshd in my application to handle the encryption and authentication for me. How do you suggest I go about it? Regards, Jaco -- "The future belongs to those who believe in their dreams." -- Nelson Mandela

...f your data set has many rows then you want to adjust the "by" argument (increase it). Twenty to thirty rows should be sufficient. myPartData <- myData[seq(1, nrow(myDat), by=3), ] dput(myPartData) Regards, Mark. ----- Mark Difford (Ph.D.) Research Associate Botany Department Nelson Mandela Metropolitan University Port Elizabeth, South Africa -- View this message in context: http://r.789695.n4.nabble.com/Has-anyone-used-SIAR-package-add-on-tp4035014p4036852.html Sent from the R help mailing list archive at Nabble.com.

I have used the fourthcorner function as suggest by dray and legendre (model 2 and 4 then combine). I plot the combined value with plot(four.comb, type="G"). What do the colors mean? I have both grey and black bars. many thanks, Stephen -- Stephen Sefick ************************************************** Auburn University Biological Sciences 331 Funchess Hall Auburn, Alabama

Hi dear, I want to estimate d.f for Chi-squared distribution: est.chi[i,]<-c( fitdistr(as.numeric(data2[,i]),"chi-squared",start=list(df=1))$estimate)Warning message:In optim(x = c(7.86755, 7.50852, 7.86342, 7.70589, 7.70153, 7.58272, : one-diml optimization by Nelder-Mead is unreliable: use "Brent" or optimize() directly Who can help me to solve this problem? Best