search for: veriabl

Hi, how can i use operation + , - , / with veriable format DATES? for example i have two variable a <- 18/08/2008 and b <- 18/09/2010 and i want to calculate a-b ?? thank you? [[alternative HTML version deleted]]

...s of such a subsets. therefore 1min*10000 =10000min in the case if I will use "for" loop like this: n1=10000 #number of subset combinations for (i1 in 1:n1) { n2=100000 # number of rows i2=1 for (i2 in 1:n1) { t.test(tab[i2,v5],tab[i2,v6])$p.value #v5 and v6 are vectors containing the veriable names for the two subsets (they are different for each loop) } } My question is there more efficient way how to do this computations in a short period of time? Any packages, like plyr? May be direct calculations isted of using t.test function? Thank you.

...0.06 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 ... and what I'd like to do is create scatter plots of quant (y-axis) against the factor site (x-axis) for specified param factors. Teetor has an example for a data set with two numeric variables and a single factor. I have a single numeric veriable, two factors, and a date. I'll also want to create time series line plots of values as a function of date for specified params. If the data.frame had only two columns all the examples work. But, using two columns (the number per site factor for only a specified param factor) is not cov...

....... where x1 is the interval between the two visits. Now I want to calculate the cumulative intervals since the beinging, for example subject visit x1 cum 1 1 0.5 0.5 1 2 1.2 0.5+1.2 1 3 0.7 0.5+1.2+0.7 2 1 0.4 0.4 2 2 0.6 0.4+0.6 2 3 1.0 0.4+0.6+1.0 ..... is there an easy to generate the last veriable cum? The number of visits for each subject may be different. I also want to choose a subset which correspond to the last observation of each subject. I am also wondering if there is a fast way to do so. [[alternative HTML version deleted]]

I have been using samba for a while now with great sucesses it has replaced my Windows 2000 server completely, I am using a mix of windows98, 2000 and XP with no problems. However i would like to do two things, 1) print samba veriables to a log file in a location of my choice 2) When a windows test user logs on, i would like to display a windowed dialog box showing the verious samba veriable stats. Can this be down without melting my brain, I have tried verious options without much sucsess. Just for refernace here is my curr...

...and reapply rules and now also search in /etc/tinc/<netname>/ directories if the related virtual network interface is up and running and if so it reapply every tinc-up-fw, so probably we do not need anymore a persistent tun virtual interface ever up. Has tinc possibility to pass a custom env veriable like $INTERFACE, etc ? it be very useful, for example for DEBUG, so tinc passes on variable to all scripts in which we can put DEBUG messages (tinc-up, tinc-down, host-up. host-down, ...) and to sub custom scripts we create, called by standard tinc scripts. Best regards Roberto -----Origina...

I just started messing with puppet, and i love it! I have used cfengine in the past, and were in process of planing to replace cfengine now. One thing thats stumped me this weekend and i know i read your working on virtal defines so i can''t do that, but how can i get arond this issue with the curretn setup. I think i am missing something fundamentally simple here. i have this

Hi, I have a problem with running puppet with hiera based data. I am trying to cleanup user accounts on a range of servers (to have the same uid/gid). When I create existing account but with different uid/gid it doesn''t change files group ownership so I need to run a script which cleanups after cleanup ;-) I use the following code: --- :backends: - yaml :hierarchy: -

Dear all, We compared the gene expression level in two conditions: high (H) and low (L), using real-time PCR. We had 3 samples of each condition, and we quantified each sample twice (i.e. a technical replication). Our data looks like: H1 H1 H2 H2 H3 H3 L1 L1 L2 L2 L3 L3 We want to test if the level in H vs L is significantly different. I would like to use ANOVA and I guess a nested model with

...ogger.nil? File.open(path, ''rb'') { |file| render :text => file.read } end end And add this line in my page <%= link_to ''file download'', :action => ''send_file(download_filename)'' %> where download_filename is a veriable <%= download_filename=''/images/myfile.xls''%> when I click the link, it display error message as "No action responded to send_file(download_filename)" i guess syntax error in my code, while send_file(). plz help me with the syntax as i am new. Tuhin -- Posted v...

...that you can create iptables rules for interfaces that don't exist yet. So you can just have the rules for your VPN interfaces loaded at boot before tinc, that should be fine. The rules will also stay around even if the interface is deleted again. > Has tinc possibility to pass a custom env veriable like $INTERFACE, etc ? it be very useful, for example for DEBUG, so tinc passes on variable to all scripts in which we can put DEBUG messages (tinc-up, tinc-down, host-up. host-down, ...) and to sub custom scripts we create, called by standard tinc scripts. A list of available environment variab...

Hola, que tal? Tendo una duda, como se puede eliminar una variable de un data.frame? Tambien tengo otra duda, tengo una base de datos importada del spss, donde tengo espacios asignados como missings, pero al pasarlo al R, me coje los espacios como una categoria más. Como los puedo poner como missings? Dolors Giralt _________________________________________________________________ [[elided