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...6 1 3 PO4 CO1 2011-04-29 07:27:21 28 2 3 PO4 CO1 2011-04-24 05:57:39 20 3 3 PO4 CO1 2011-04-14 10:29:49 4 4 3 PO4 CO1 2011-04-16 07:27:31 63 5 3 PO4 CO1 2011-04-18 15:46:20 1 6 3 PO4 CO1 2011-04-18 15:45:57 1 To start with I have tried to make the start data and time into one new column: startt<- strptime((paste(data2$V4, data2$V5)), "%d/%m/%Y %H:%M:%S") This executes without any warnings, but returns a full column of NA values. It would be great to fix this, and then to know how to correctly add column V6 as seconds to the resulting column. The problem is further exacerb...

...s due to a low number of points (6), but when I create a dataset, I get the same problem. If I remove the parameter "a," then it can find a solution. Does anyone know what I can do to fit this model? vardata<- rnorm(73,mean=0,sd=5) x<-0:72 a<-1 b<-50 k<-0.05 l<-5 startt<-c(a,b,k,l) yf<-a+b*(1-exp(-k*(x-l))) y<-yf+vardata nmodel<-nls(y~a+b*(1-exp(-k*(x-l))), start=list(a=1,b=50,k=0.05,l=5)) -- View this message in context: http://r.789695.n4.nabble.com/nls-not-solving-tp3328647p3328647.html Sent from the R help mailing list archive at Nabble.com...

...significant in the summary tests, but all individual covariates are insignificant (these are Wald, yes?), what do I make of that? I recognize the questions are partly R related and partly statistical (if there is a better place to post this please let me know). Call: coxph(formula = Surv(startt, stopt, rep(1, nrow(omfi))) ~ joof1 + topslope1 * top1 + I(early.angle/late.angle) + spac.cov + ave.angle + slopef.d + cluster(id) + strata(sequence), data = thedofile)) n= 174 coef exp(coef) se(coef) robust se z p joof1 -0...

...stalled: snmp, nut, nut-snmp OS: SunOS 5.11 NexentaOS_134f (NexentaStor 3.1.1) I have set up the IBM in ups.conf as follows [ibm3000_1] driver = snmp-ups port = <ip-of-ups> mibs = pw pollfreq = 30 community = public snmp_version = v1 desc = "Rack 1: main network ups" When I startt NUT, dmesg spits out, before SMF turns nut into maintenance: Nov 7 13:36:05 museion upsd[18640]: [ID 702911 daemon.error] Can't connect to UPS [ibm3000_1] (snmp-ups-ibm3000_1): No such file or directory When launching snmp-ups driver directly using I get root at nexenta1:/# /lib/nut/snmp-ups...

hi, I would like to find the x value (independent variable) for a certain dependent value using the fitted model with nls. with (predict) I can find y that corresponds to a list of x. I need the other way around. can it be done? thanks, afadda

WARNING: This is not compatible with the previous lz4 patchset. If you''re using experimental compression that isn''t in mainline kernels, be prepared to backup and restore or decompress before upgrading, and have backups in case it eats data (which appears not to be a problem any more, but has been during development). These patches add lz4 and lz4hc compression