Re: [R] how to exclude rows with not-connected coalitions

2012-02-09 Thread Schumacher, G.
, 2012 2:09 PM To: Petr Savicky; r-help@r-project.org Subject: Re: [R] how to exclude rows with not-connected coalitions This can be done without nested loops. a <- expand.grid(rep(list(c(0,1)),7)) tmp <- apply(a, 1, function(x){ var(cumsum(x == 0)[x == 1]) }) a[is.na(tmp) | tmp == 0, ] ir. T

Re: [R] how to exclude rows with not-connected coalitions

2012-02-09 Thread ONKELINX, Thierry
. ~ John Tukey -Oorspronkelijk bericht- Van: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] Namens Petr Savicky Verzonden: donderdag 9 februari 2012 13:44 Aan: r-help@r-project.org Onderwerp: Re: [R] how to exclude rows with not-connected coalitions On Thu, Feb 09, 2012 at 12

Re: [R] how to exclude rows with not-connected coalitions

2012-02-09 Thread Petr Savicky
On Thu, Feb 09, 2012 at 12:18:06PM +, Schumacher, G. wrote: > 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