Unable to read & render .pcd files in ros rviz

edit

Hello All,

I am very new to ros development, I am trying to read and render .pcd file. But I am unable to success. Could anyone please suggest me possible solutions. This is the sample code i am using currently,

typedef pcl::PointCloud<pcl::PointXYZ> PointCloud;
using namespace std;
int main(int argc, char** argv)
{
double x_cloud; double y_cloud; double z_cloud;
pcl::PointCloud<pcl::PointXYZ>::Ptr cloud (new pcl::PointCloud<pcl::PointXYZ>);
ros::init (argc, argv, "my_pcl_tutorial");
ros::NodeHandle nh;
ros::Publisher pub = nh.advertise<PointCloud> ("points2", 1);
// .pcd file is in the same location as the source file.
pcl::io::loadPCDFile<pcl::PointXYZ> ("data.pcd", *cloud);
PointCloud::Ptr msg (new PointCloud);
msg->header.frame_id = "frame1";
msg->height = cloud->height;
msg->width = cloud->width;
for (size_t i = 0; i < cloud->size (); i++) {
x_cloud = cloud->points[i].x;
y_cloud = cloud->points[i].y;
z_cloud = cloud->points[i].z;
msg->points.push_back (pcl::PointXYZ (x_cloud, y_cloud, z_cloud));  }
ros::Rate loop_rate(4);
  while (nh.ok())  {
pub.publish (msg);
 ros::spinOnce ();
loop_rate.sleep ();
}}

[pcl::PCDReader::readHeader] Could not find file 'data.pcd'.

Also, unable to visualize the data in the RVIZ, Appreciate your help in this regards.

Thanks in Advance