search for: contag

Displaying 3 results from an estimated 3 matches for "contag".

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2012 Nov 24
3
Help!!!!!
...SPAIN 4 14363 23 2009-04-29 United Kingdom 5 14363 A data with a date in character format,i wich reprent a country,Symptomes wich is a number of subjects having a disease,t the date convert in numeric. I want to create two other variables (for example INCUBATION and CONTAGIEUX) Incubation[ i ] add values for symptomes for the two previous days (for t<=t-1) CONTAGIEUX [ i ] add values for symptomes for the 7 next days (for t>=t+6). I want the two variables INCUBATION and CONTAGIEUX to be cumulative for next and previous date. For example for date i...
2008 Sep 23
1
Create groups from data to compute lm?
...ri_ex sc_ex Sc_ex_pri sc_ec_p1234 PD LPI ED LSI 1 3 25 1 1 3251 251 1 1 26 125 1125 1125 21.6565 62.6602 82.0769 15.8792 2 3 25 1 1 3251 251 1 1 26 125 1125 1125 19.3076 27.6264 111.2014 20.7889 PAFRAC PROX_MN ENN_MN CONTAG pfor purban 1 1.440 319.6529 114.8314 62.0965 69.4891 12.3124 2 1.467 396.1949 105.3712 52.9186 38.1179 15.1906 I tried using: all.lm <- (pfor~PD, data = all, subset=(ex_bin==250)) but this resulted in a bogus analysis filed with 'NAs'. I then tried to use getGroups. > all.group...
2012 Dec 04
6
Help for a function
Hello all, I need a help. I am modeling a disease and a create a R function like that: Lambda<-function (x,date1,r,h,a){ ndate1 <- as.Date(date1, "%d/%m/%Y") t1 <- as.numeric(ndate1) x[order(x$i),] t <-x[,"t"] i <-x[,"i"] CONTAGIEUX <-x[,"CONTAGIEUX"] while ( t1 < min(t) ){ for (i in 1:length(i) ){ {for (j in 1:CONTAGIEUX[length(CONTAGIEUX)]){ res1[j] <-(a*h) res2 <-sum( res1[j]) } } lambda[i] <- r*res2 } } x<-data.frame(x,lambda) x } on such data : DATE i...