similar to: Colour Schemes

Whenever I use "..." in the formula of the cast function, from the reshape package, I get the following error: Error in `[.data.frame`(data, , variables, drop = FALSE) : undefined columns selected For example: data(french_fries) #available in the reshape package > head(french_fries) time treatment subject rep potato buttery grassy rancid painty 61 1 1 3 1

I have a data set that I'm trying to melt and cast in a specific way using the reshape package. (I'll use the ff_d dataset from reshape so I don't have to post a toy data set here. ) Lets say I'm looking for the interaction of treatment with each type of "variable" in ff_d. Using the command below gets me this. Subject will get a column and each treatment type by each

Hello, I did the same question on stackoverflow (http://stackoverflow.com/questions/15784373/process-substitution) but did not understand completely the issue so I'm reporting it here: " I've given a look around about what puzzles me and I only found this: http://stackoverflow.com/questions/4274171/do-some-programs-not-accept-process-substitution-for-input-files which is partially

Hello, I did the same question on stackoverflow (http://stackoverflow.com/questions/15784373/process-substitution) but did not understand completely the issue so I'm reporting it here: " I've given a look around about what puzzles me and I only found this: http://stackoverflow.com/questions/4274171/do-some-programs-not-accept-process-substitution-for-input-files which is partially

Hy guy's, thank you for the fantastic job you are doing. I need to know if xen 3.1 will ever included in etch, basically for the suspend/live migration issue for HVM guest's in Xen 3.0.X. Best Regards Christian Grassi -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi. How can i simulate a binary data set from a logistic regression model?I need to manipulate parameters and so obtain my set of data. I want to show the improve in analyzing binary data with GLM(binomial) model instead of classical ANOVA or NON-MODELS procedures(relative risk-odds ratio-Pearson test of godness of fit...) Can you say me what is the right function to use? Do you know any

where is the cook-distance in R? i can't find it!please help me!

Hi. 1)I have two variables: call a<-c(e.g.0,3,6,7...) b<-c(e.g.6,8,3,4...) I want to create a third vector z wich contain the pairs values z<-c(0,6,3,8,6,3,7,4....and so on for each pairs (a,b)). There is a specific function? How can i write my own function? 2)When i try to write a function and then i save it like "function.R" file, i try to

how can i draw a 3d scatter plot? thank you.

Hi, When i load my workspace, i visualize my object with the ls()function. First problem is that the saved graph is open like a list instead of an image!What is wrong? Second problem is about scatterplot graph: how can i identify a specific point? Thanks. Michele.

Hello, Can somebody help me on a colour question? I have a levelplot made with the following syntax: library(lattice) inp <- read.csv("hoenne1", header = TRUE) levelplot(z~x*y, data = inp, region = TRUE, pretty = TRUE, col.regions = terrain.colours) The file "hoenne1" contains the data. I'll give a short example: x,y,z 0,0,1 0,1,1 0,2,1 1,0,2 1,2,2 0,2,2 1,2,3 2,2,2

The legacy db I am currently working with has lots of codes (2 character strings) that are required to be the same in the new version of the app. Things like country codes, language codes and others which are not standard. Rather than create a table for each and then have a relationship between my models, I would much prefer to have a string field in the model being tagged with a code, limit

All, I have a model object that I do a bunch of stuff to before I want to save it to the database. Actually, to be more specific, I do a lot of validation that is related to one attribute on this model. I would like to do some validation on it but take advantage of something akin to ActiveValidation. I''ve read through this http://www.ruby-forum.com/topic/1689#1210 which

There are a VERY large number of packet dropping schemes in existence, of which some have been implemented for Linux and others have implementations in Open Source environments that could probably be ported. I thought I''d be a nuisance and list the schemes I know of and the status (as far as I know it). What I would like is if people who (a) know of implementations that should be here

Hello all. Just about to migrate from courier to dovecot, and figured I would as well try and get this working so I could use non plaintext mechanisms as well. I would like to offer at least: plain login digest-md5 cram-md5 and maybe more Everything works but this and have a testdb in sql with passwords like userid, password But get "Password query returned multiple matches" which

Hello, I am using the latest version of Dovecot on a FreeBSD box. I am trying to figure out which password scheme to use to comply with my database backend which is administered by "postfix admin". Here is an example of the password that can be generated in the database using the various encryption schemes available in postfix admin: $1$a733fb07$/g1h6opQxemdWUtzD2/kQ. -->

Hey everyone, I'm looking at the IDEALX smbldap-passwd script (the version which comes with samba 3.0.22, in the examples directory), and it seems to want to set the password scheme to an uppercase string, i.e.: {CRYPT}foobarfoobar {MD5}barfoobarfoo However, looking at RFC 2307 ( http://www.ietf.org/rfc/rfc2307.txt ), in section 5.3, it would appear that these are supposed to be

Hi All, I'm Sumith, a postgraduate student in Monash university. I'm working in the area of Text weighting schemes and Text Mining. When I'm going through the GSOC project list, I felt interested in the 'Weighting Schemes' project. At the moment, I have worked with different weighting schemes as TF-IDF and would love to join and contribute with my ideas in this project.

Hi! I am Praveen Kumar, an Applied Mathematics student and I am interested in developing other weighting schemes for Xapian through GSOC. I did not have any formal course in Information Retrieval in our institute. The theory that I presently know is from the Xapian documentations and other references and resources mentioned on the website which I read to design our own Probabilistic Information

Hello, My name is Santiago Pina and I am currently studying two BSc(Hon) simultaneously ; one in Computer Science and the other in Mathematics as part of a pilot project at Universidad de Murcia. I am very excited to contribute in open source community through the platform of Google Summer of Code 2011. I was interested in the Weighting Schemes project and in the Matcher Optimisations project,