Convert diff ( GDPC96) into boolean vector.
>output <- c( ); for( i in seq ( 2, length( as. numeric( diff ( GDPC96[ "2001::"]))), 1)) {if( as. numeric( diff ( GDPC96[ "2001::"]) [i ]) > 0 ) {output <- append( output, 0) } else{ output <- append( output, -1)}}
>output
[1] 0 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 0 -1 -1 -1 -1 0 0 0 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 0 -1 0 0 0 0 0 0 0 0
>
>
[1] 0 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 0 -1 -1 -1 -1 0 0 0 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 0 -1 0 0 0 0 0 0 0 0
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