similar to: randomly select another observation with same grouping factor and year value, do for every record in dataframe

Hi guys, I'm very new to R and have been teaching myself over the past few months - it's a great tool and I'm hoping to use it to analyse my PhD data.As I'm a bit of a newb, I'd really appreciate any feedback and/or guidance with regards to the following questions that relate to generalized linearmixed modelling (or, at least, I think they do!)(if there is a 'better',

Hello all- I am doing a survival analysis for two species of invasive plants I outplanted to edges and interiors of island and mainland sites in a local reservoir. I am using the KM estimate and had no problem doing survdiff for my data using the following code: S4<-Surv(outplant$SurvTime, outplant$StatusD6) diff4=survdiff(S4 ~ outplant$Species+outplant$SiteType+outplant$EdgInt) diff4

<%= form_remote_tag :url => { :action => ''list_setups'' }, :loading => "Element.update(''setupslist_display'',''''); Element.show(''setupslist_progress'')", :loaded => "Element.hide(''setupslist_progress'')", :update => ''setupslist_display'',

Hello, I think this is easy, but I can't seem to find a good way to do this in the R help. I have a list of sites, with multiple years of data for each site id. I want to create a new column that gives a number describing whether it is the 1st year ("1" ) the data was collected for the site, the second year ("2"), etc. I have different years for each siteid, but I don't

as a side note, I see from my Facebook memories <http://callingketti.ml/lists/lt.php?id=YUgFAg9UGAFUUh1QWlQKVF0F> that I am repeating specific things ... anually ... something I once said I would never do (intentionally) and specifically because "rituals of which we have no understanding of their true meaning" are clearly horrible things (ur wasting time) ... one of the primary

Greetings! I'm having an issue with the windrose produced by the windrose function from the circular package. For our weather stations in North Carolina I'm helping with a script which takes hourly wind speed and direction data to create windroses for our end users. One of the stations in the mountains frequently reaches wind speed of 40 to 60 mph and in storms can reach wind speed over

Alright so after checking logs, rebooting the vps because why not, and removing and re-adding the account in thunderbird... Now nothing is working other than sending mail from gmail to the domain. imap does not pick up the email and trying to send with the domain just plain fails, saying it can't connect to the server. Honestly, tempted to uninstall dovecot, sasl and postfix and start

hi, please help me on this. I'm very new to R. I've been figuring out how to do this the whole day, and I could not get the correct R code. Suppose I have a dataframe called x and it consists of 10variables. >x h 1 h 2 h 3 h 4 h 5 h 6 h 7 h 8 h 9 1 0.38971928 0.62884802 0.32708216 0.093909834 0.57773251 0.41258918

Hello, I am trying to convert list of pairwise distances to a distance matrix for spatial analysis (kriging). For instance, I have something like this for each pair pf points, and I want to convert it to a matrix: point1 point2 distance 1 1 0 1 2 4 2 2 0 2 1 4 Please let me know if there is a

I've been trying to compile klibc on my system, so that I can have high resolution consoles via uvesafb, without conflicting with the NVidia drivers I need to use to handle hi-def video. I have tried versions 1.5.20, 2.0.1 and 2.0.2 all without success. My system is Slackware64-14.0 running kernel 3.6.3 on an AMD quad core motherboard. GCC version is 4.7.1. My initial problem was that

Below is what has been documented on this issue, and I am needing further guidance. Essetially, I am running in GNOME, but it isn't working properly. Can some one help. |----------------------------------------------------------------------------------------------------------------------| |I am new to the Centos ISO and was looking for a forum, when I came across this. If it isn't

Can anyone help me with the necessary code to relevel a numeric*factor interaction term in a linear model? I would like to report the estimate, std. error and t-value for the reference factor. First, I estimated a linear model with dummy variables and was able to retrieve model estimates for the reference factor using relevel. for example: > summary(update(mod.mod, . ~ . - dummy + +

Dear R users, I am new to R. I would like to calculate bootstrap confidence intervals using the BCa method for a parameter of interest. My situation is this: I already have a set of 1000 bootstrap replicates created from my original data set. I have already calculated the statistic of interest for each bootstrap replicate, and have also calculated the mean for this statistic across all the

How can I relevel a liner model with a numeric by dummy variable interaction to extract the model estimate, std. error, and t-value for the reference factor? Thank you, Christy [[alternative HTML version deleted]]

I'm new to this list but we've been using Samba on our Sun Ultra running Solaris (Sunos 5.6) for several months. We have a single x86 NT server and several NT, '95 and '98 workstations on the network. We are running Samba 1.9.18p10 and were running 1.9.18.p4 previously. We are running with no password encryption. The following problem occurred in both versions. The problem

Hi all, First a disclaimer. I have played with linux off and on for years, but this is my first time trying to run a server completely on my own from start to finish, well it's on a vps, but still. I'm pretty techie, but a lot of this stuff is new to me, so I apologize for any *duh!* questions. That said, I've so far installed dovecot, postfix, wordpress, and related programs

Subject really says it all. I took the practice exam linked from @PuppetLabs and I was a little bit surprised/caught-off-guard by the number of either PE or Console questions, neither of which I''ve ever used :-! I am taking the developer exam though, so I''m sure that will be at least a little different. Does it make sense to take the exam for an "open source puppet

Hi, I am relatively new to linux, and have set up my first lamp server around a month ago. The server is housed in a data centre a few miles from my house, and is working as a web server (with apache, tomcat, mysql) just fine. I have now been trying for a week to get Postfix and Dovecot working with postfixadmin and mysql. (below I have replaced my test domain name with [***domain_name***]) The

Dear All, I am using a Procrustes analysis to compare two NMDS ordinations for the same set of sites. One ordination is based on fish data, the other is based on invertebrate data. Ordinations were derived using metaMDS() from the {vegan} library as follows: fish.mds<-metaMDS(fish.data, distance="bray", k=3, trymax=100, wascores=TRUE, trace=TRUE, zero="add")

OK, gurus, I've spent the last 2 days crawling through all of the posts and web postings regarding shared folders, and I simply cannot get it to work. I'm sure that there is something simple that I've overlooked, but cannot for the life of me see it :) Here's my current config: # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.16.0-46-generic x86_64 Ubuntu