set.data | R Documentation |
Prepares data for Nash equilibrium
set.data(data, shape="wide", choice, varying, sep="_")
data |
the data set |
shape |
either |
choice |
the variable indicating the choice made: it can be either a logical vector, a numerical vector with 0 where the alternative is not chosen, a factor with level 'yes' when the alternative is chosen. |
varying |
the indexes of the variables that are alternative specific. See Details. |
sep |
the seperator of the variable name and the alternative name (only relevant for a wide data.frame). See Details. |
For general examples see the vignette. The arguments shape
, choice
, varying
and sep
as as in the mlogit.data
function.
A mlogit.data
object, which is a data.frame
in long format, i.e. one line for each alternative. It has a index attribute, which is a data.frame that contains the index of the choice made ('chid'), the index of the alternative ('alt') and, if any, the index of the individual ('id'). The choice variable is a boolean which indicates the choice made. This function use reshape if the data.frame is in wide format. It also has the attribute call
for further data manipulation in the bootstrap task of equilibrium
.
See the vignette for detailed explanations and other working examples.
Luigi Curini, Stefano M. Iacus
Curini, L., and Iacus, S.M. (2017) Nash Optimal Party Positions: The nopp R Package, Journal of Statistical Software, 81(11), 1–25
## Not run: data(italy2006) str(italy2006) italy2006[1:2,1:14] election <- set.data(italy2006 , shape="wide", choice="vote", varying=c(5:14), sep="_") str(election) m <- mlogit(vote~prox+partyID | gov_perf+sex+age+education, election, reflevel = "UL") summary(m) true.pos <- list(FI=7.59, UL=3.50, RC=1.95, AN=8.08, UDC=5.66) true.votes <- list(FI=.24, UL=.40, RC=.10, AN=.18, UDC=.08) # model: comparison against true votes and party positions nash.eq <- equilibrium(model=m, data=election, pos=true.pos, votes=true.votes) nash.eq ## End(Not run)
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