[Rsiena-help] reading composition change dat files in R

[Maarten Selfhout]

Dear Ruth,

I'm trying to include composition change variables and R, but having  
troubles getting the files in the right format.

This is what I get from the Rsiena guide:

I have three waves. So anybody with all data should be

1 3

and someone with only data on wave 1 and 2 could be

1 2.5

someone who has data on wave 1, not at wave 2, and again has data on  
wave 3 should be

1 1.5 2.5 3

However, when using this format, I get the following message:

 > library(RSiena)
 >   library(snow)
 >   library(rlecuyer)
 >   setwd('/Users/maartenselfhout/Desktop/sex and friends/school1')
 >   net.w1 <- as.matrix(read.table("W1SIENA.dat"))
 >    net.w2 <- as.matrix(read.table("W2SIENA.dat"))
 >    net.w3 <- as.matrix(read.table("W3SIENA.dat"))
 > sex <- as.matrix(read.table("sex.dat"))
 > mat <- as.matrix(read.table("mat.dat"))
 > comp <- as.matrix(read.table("joinleave.dat"))
Error in scan(file, what, nmax, sep, dec, quote, skip, nlines,  
na.strings,  :
   line 85 did not have 2 elements



And when I tried to do the following for people who only have 1 wave  
of data

1 1

for wave 1

or

2 2 for wave 2


R reads the data without problems, but I get the following error

 > comp2 <- sienaCompositionChange(comp)
Error in sienaCompositionChange(comp) : changelist must be a list

What am I doing wrong in the format? I've attached my latest file  
(joinleave.dat)



Here is thew whole syntax as well thus far

 > library(RSiena)
 >   library(snow)
 >   library(rlecuyer)
 >   setwd('/Users/maartenselfhout/Desktop/sex and friends/school1')
 >   net.w1 <- as.matrix(read.table("W1SIENA.dat"))
 >    net.w2 <- as.matrix(read.table("W2SIENA.dat"))
 >    net.w3 <- as.matrix(read.table("W3SIENA.dat"))
 > sex <- as.matrix(read.table("sex.dat"))
 > mat <- as.matrix(read.table("mat.dat"))
 > comp <- as.matrix(read.table("joinleave.dat"))
Error in scan(file, what, nmax, sep, dec, quote, skip, nlines,  
na.strings,  :
   line 85 did not have 2 elements
 > comp <- as.matrix(read.table("joinleave.dat"))
 > comp2 <- sienaCompositionChange(comp)
Error in sienaCompositionChange(comp) : changelist must be a list
 > 
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Thank you so much for your help!


Maarten