final public void resample( final int[] resampled_column_positions ) {
if ( resampled_column_positions.length != getLength() ) {
throw new IllegalArgumentException( "illegal attempt to use " + resampled_column_positions.length
- + " resampled column positions on msa of length " + getLength() );
+ + " resampled column positions on msa of length " + getLength() );
}
_resampled_column_positions = resampled_column_positions;
}