search for: substrat

...the like, but I'm having a tough time with it under this framework). There does appear to be some indexing in the output of this type, but perhaps not enough to obtain single values? Here's what I've been able to do so far with some example code: > density.aov<-aov(density ~ substrate + Error(substrate/tile)) > > anov1<-(summary(density.aov)) > print(anov1) Error: substrate Df Sum Sq Mean Sq substrate 2 1282.4 641.2 Error: substrate:tile Df Sum Sq Mean Sq F value Pr(>F) Residuals 27 225.700 8.359 Error: Within...

Hi all, I have a very easy questions (I hope). I had measure a property of plants, growing in three different substrates (A, B and C). The rest of the conditions remained constant. There was very high variation on the results. I want to do address, whether there is any difference in the response (my measurement) from substrate to substrate? x<-c('A','A','A','A','A','...

I'm just getting to grips with using ode function and have used the examples and vignettes to produce a small model of a one-pool, michaelis-menten, enzyme kinetic reaction. The rate of flux of substrate into pool A is constant (fluxoa) however the rate of flux out of pool A is controlled by the HMM equation (v = Vmax/ ( 1 + (Km / Concentration A )) ). This function works fine and gives correct answers for the size of the pool of quantity of substrate in pool A at all times, however if p...

Hi there, I am fairly new to R and I have been trying to figure out how to separate a column of substrate data that I have into separate parts using R. An example of my data looks like this is: gmtTime Classification ClassValue Species Count 1449 Sand 30 1449 Mud 70 Brittle Star 1 1449 Mud 70 Britt...

Hi, I'm analyzing experimental results where two different events ("T1" and "T2") can occur or not during an experiment. I made my experiments with one factor ("Substrate") with two levels ("Sand" and "Clay"). I would like to know wether or not "Substrate" affects the occurrence probability of the two events. Moreover, for each condition I would like to test the heterogeneity of my experimental contingency table with a theor...

...number==1) { y.temp<-(coef(m2.nls)[1]+coef(m2.nls)[2]) * x.temp/ (coef(m2.nls)[3] + x.temp) panel.lines(x.temp,y.temp,col=2)} if (panel.number==2) { y.temp<-coef(m2.nls)[1] * x.temp/ (coef(m2.nls)[3] + x.temp) panel.lines(x.temp,y.temp,col=2)} }, ylab="Rate of reaction", xlab="Substrate concentration", main = "Puromycin---comparison bt. treated and untreated" ) thanks for any idea

...1 Once I have sampling data ordered by depth, using my own "expert" opinion I can distinguish 3 groups A, B, C: A (1 - 4 m depth range) - where both sand and boulders are present, B (5 - 6 m range) - where sand is dominant with just a few observations of boulders, C (7 - 9 m range) - substrate dominated by sand and clay. Now the question - is there any formal method that can do the same e.g. separate the groups A, B and C by analyzing how does feature occurrence patterns change in samples along an environmental gradient (depth in this case)? Sample dataset here is simplified, in fac...

...xx being the proportion per date-time) I would appreciate it: Date-Time MeanHt PE OS SI ... 28Mar96.0752 6.000000 0.xx 0.xx 0.xx ... 28Mar96.1014 7.000000 0.xx 0.xx 0.xx ... TIA, Bret (R 2.6.1 on I386-pc-mingw32) Texas A&M > Final Sequence testdate testtime Behavior Substrate TreeHt 1 1 28Mar96 0752 PE TW 6 2 2 28Mar96 0752 OS <NA> 6 3 3 28Mar96 0752 PE TW 6 4 4 28Mar96 0752 PE TW 6 5 1 28Mar96 0924 PE TW 8 6...

...th/to/(Something) Word Word Anotherword--Word Word.pdf IO error encountered -- skipping file deletion I think either the -- is causing it to fail, or more likely, the next filename, which it didn't bother to print out, which has an ampersand in the name, causes it to fail. I am using SSH as a substrate, of course, and I think you guys failed to escape things, so the ampersand is hosing your protocol somehow. 2) I am also aware that when rsyncing to a foreign system, you have to "double escape" filenames - if the target has a space in it, you must use not one, but two sets of quotes....

...s(object)), object$na.action, : object 'possibly.random' not found Error in ref_grid(object, ...) : Perhaps a 'data' or 'params' argument is needed Data-set-2: --------------- Keough and Raimondi (1995) examined the effects of four biofilm types (SL: sterile unfilmed substrate, NL: netted laboratory biofilms, UL: unnetted laboratory biofilms and F: netted field biofilms) on the recruitment of serpulid larvae. Substrates treated with one of the four biofilm types were left in shallow marine waters for one week after which the number of newly recruited serpulid worms were...

Hi! I wish to know if there is any R forum which is meant only for Statistics? I mean where we can clarify our statistics doubts and seek knowledge. I know there are lot many books and internet sites, but 'R forum' has altogether different standard and very high level and one can learn a lot from them. Regards Vincy [[alternative HTML version deleted]]

...;possibly.random' not found > Error in ref_grid(object, ...) : > Perhaps a 'data' or 'params' argument is needed > > > > Data-set-2: > --------------- > Keough and Raimondi (1995) examined the effects of four biofilm types (SL: > sterile unfilmed substrate, NL: netted laboratory biofilms, UL: unnetted > laboratory biofilms and F: netted field biofilms) on the recruitment of > serpulid larvae. Substrates treated with one of the four biofilm types were > left in shallow marine waters for one week after which the number of newly > recruited...

Hello: I would like to run a Cox proportional hazards regression on crayfish dislodgement at different water velocities by crayfish size class and substrate (rock) type. Additionally, there is a covariate variable, rock movement that may be influencing crayfish dislodgment. So... I have crayfish size class (CFSZCL) and substrate type (SUBSZ) as fixed factors influencing the dislodgment of crayfish at different water velocities (SLIPVEL). Thus, I a...

...object)), object$na.action, : object 'possibly.random' not found Error in ref_grid(object, ...) : Perhaps a 'data' or 'params' argument is needed Data-set-2: --------------- Keough and Raimondi (1995) examined the effects of four biofilm types (SL: sterile unfilmed substrate, NL: netted laboratory biofilms, UL: unnetted laboratory biofilms and F: netted field biofilms) on the recruitment of serpulid larvae. Substrates treated with one of the four biofilm types were left in shallow marine waters for one week after which the number of newly recruited serpulid worms were...

...second (a depth at each second) in one hand, and in the other hand, I have a tide variation level data set sample every 250 ms. The time register in each data sets (tide and bathymetric) is express in seconds followinf this format : hh:mm:ss.ss I would like to rectify the depth (bathymetry) by substrating the tide at each depth time. I tried to construct time series using pastecs package but didn't succed Example of the tide data set: Time Correction 11:55:07.58 -2.64 11:55:07.68 -2.64 11:55:07.88 -2.64 11:55:08.28 -2.64 11:55:08.38 -2.64 Example of the bathymetric data: X...

Dear R users, Could somebody please help me to find a way of comparing nonlinear, non-nested models in R, where the number of parameters is not necessarily different? Here is a sample (growth rates, y, as a function of internal substrate concentration, x): x <- c(0.52, 1.21, 1.45, 1.64, 1.89, 2.14, 2.47, 3.20, 4.47, 5.31, 6.48) y <- c(0.00, 0.35, 0.41, 0.49, 0.58, 0.61, 0.71, 0.83, 0.98, 1.03, 1.06) model1 <- function(x, xo, ym) ym * (x-xo)/x model2 <- function(x, xo, ym, k) ym * (x-xo)/(k+x-xo) model3 <- funct...

...if these cells where filled with numbers (int or real) but often, it refers to some parameters name or even to formulae. I'd like to transform these formulae into their calculated values. eg: if I have existing R objects : f_ox <- 0.2 f_inox <- 0.5 and in my matrix : cell (Oxydation, substrate) = f_ox*(1-f_inox) I want to replace f_ox*(1-f_inox) by 0.1 Further more, I can not manage to understand the formula type, which I guess would correspond to the kind of things I am dealing with. Would you have any clue or insights on this? Pascal Boisson Assainissement - Traitement Biologique...

Dear all, I've taken a subset of data from a data frame using crb<-subset(all.raw, creek %in% c("CR") & year %in% c(2000,2001) & substrate %in% ("b")) this works fine, except that all of the original factor levels are maintained. This results in NA's for these empty levels when I try to do summaries based on factors using by(). Is there a simple way to drop the factor levels that are no longer represented. I've use...

...from Dom0 like DomU CPU usage? Similarly with network stats: I’m sure that Dom0’s eth0 does not report network traffic that DomUs used, but does peth0 report traffic that ‘hit the wire’? Additionally, does this include traffic that occurs between Dom0 and DomU, that doesn’t escape into the network substrate? I’m testing this myself as I write this, but I’d rather have my “research” confirmed by knowledgeable users. Thanks all, -Tyler Szabo _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

...ature which would influence if the peg was the correct size (there would be a known relationship to temperature, and a mean temperature with a standard deviation would be known) The hole should be 1.8mm diameter as well. Again there are variables that affect if it is, drill size, drilling method, substrate being drilled, temperature at time of drilling, temperature at time of fitting peg (would be same as above). I'd be looking to model if the peg would fit in the hole, AND if it fitted how well it fitted. I'd then want to run a simulation of say 500 scenarios, randomly picking temperature...