Dear all,
I have question but cannot explain without providing some context first:
I want to calculate how many policy-connected coalitions between 7 parties are
possible. I have positions on an one-dimensional scale for each party and I
have sorted the parties on the positions (it is sorted from extreme left to
extreme right, hence using a left-right scale). A policy-connected coalition
consists of parties that are connected on this left-right scale, hence there
cannot be a party outside the coalition that is in-between two parties in the
coalition on the left-right scale. My question is: how do a make a matrix that
excludes those coalitions that are not policy-connected.
I made a matrix with each combination of 0 (out of coalition) and 1 (in
coalition), for 7 parties.
a <- expand.grid(rep(list(c(0,1)),7))
a gives all possible coalitions between these 7 parties.
Now I want to exclude those rows with coalition that are not policy-connected.
Hence: this one should be out, because the fifth party is not in.
0 1 1 1 0 1 1
And this one should be in,
0 0 0 1 1 1 1.
Hope this is clear and that someone has a good suggestion.
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