vfh viever for many files

// vfhv file1 file2 ...

int main(int argc, char* argv[])
{
	pcl::visualization::PCLHistogramVisualizer h_vis;
	for ( int i=1; i<argc; i++ )
	{
		pcl::PointCloud<pcl::VFHSignature308>::Ptr vfhs (new pcl::PointCloud<pcl::VFHSignature308>);
		pcl::io::loadPCDFile ( argv[i], *vfhs);
		h_vis.addFeatureHistogram(*vfhs , 308, argv[i]);
	}
	h_vis.spin();

	return 0;
}