Re: [R-sig-eco] doubt in generating loops with For

2015-04-17 Thread Rodrigues
Hello Thiago, You keep doing the same mistake. When you pass z as subset to comm z will be the z th column and you only has 10 columns so you will always receive the out of bound. If I understood correctly you are trying to repeat a process 1000 times if yes follow a code above. I'm not sure

[R-sig-eco] Help with a function

2014-06-06 Thread Rodrigues
Dear R users, I’m trying to build a function to select random samples idf’s from a database. So, my data frame had 2 columns and 575 rows. Follow bellow an example of my database Idf1casod 12 1 14 1 15 1 16 1 17 3 18 3 19 3 21 3 25 1 24 1 26

Re: [R-sig-eco] Help with a function

2014-06-06 Thread Rodrigues
Hello, I would like to thanks everyone for the help. I did this one: blinding=function(sampling){ sort1=sample(idf[casod==1],30,replace=F) sort2=sample(idf[casod==3],30,replace=F) var1=factor(c(rep(1,30),rep(2,30)),labels=c(Positivo,Negativo)) var2=cbind(c(pos=sort1,neg=sort2))

Re: [R-sig-eco] R-sig-ecology (72-19): Plot question

2014-03-24 Thread Rodrigues
Dear Michal, In this case they have only two variables: (i) time spend in each prey and (ii) prey type. Would be better if he use bar graphs. So if are necessary show the time spend for each spider I suggest the follow commands: spider2=as.factor(spider) plot(time~prey) library(gplots)

Re: [R-sig-eco] R-sig-ecology (72-19): Plot question

2014-03-24 Thread Rodrigues
Ok my bad. Stripchart doenst plot bar... Just like this time=(c(rnorm(10,2),rnorm(10,3),rnorm(10,1.5),rnorm(10,.5),rnorm(10,1))) prey=factor(c(rep(1,10),rep(2,10),rep(3,10),rep(4,10),rep(5,10)),labels=c(Ants,Cockroach,Fly,Isopod,Mite)) stripchart(time~prey,vertical=T,pch=1,method=jitter,ylab=Time

[R-sig-eco] richness estimators

2011-03-25 Thread Fernando Rodrigues da Silva
wonder if anyone know how to change this value. Thank you for your attention. Best regards, FERNANDO RODRIGUES DA SILVA === Doutor em Biologia Animal Lab. de Ecologia Animal, UNESP - São José do Rio Preto - Cep 15054-000 Celular:(17) 8126