Using PCL with ROS for surface normal estimation

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Hi Guys,

I am trying to use PCL with ROS for normal estimation of point cloud data published from Gazebo. when i am trying to run my code

pcl::NormalEstimation<pcl::PointXYZ, pcl::Normal> ne;
     ne.setInputCloud (cloud);

I got such errors

error: no matching function for call to ‘pcl::NormalEstimation<pcl::PointXYZ, pcl::Normal>::setInputCloud(pcl::PCLPointCloud2*&)’
      ne.setInputCloud (cloud);