how to use more than one marker types

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I want to visualize 3 seperate markers to be visualized in rviz until same line group donot appear again. I found that by doing line_list.points.clear() and line_list.colors.clear() i can make given line visualize until another line donot appears so that at one time only one marker of that name exist. But i want to display more than one marker and line like that so that whenever the same name of marker arrives the previous marker is vanished. I tried below program but donot works:

void
cloud_cb (const sensor_msgs::PointCloud2ConstPtr& input)
{
pcl::PointCloud<pcl::PointXYZRGB> output;
pcl::fromROSMsg(*input,output);

visualization_msgs::Marker marker, line_list, text_view_facing;
marker.header.frame_id = line_list.header.frame_id = text_view_facing.header.frame_id = "/camera_link";
marker.header.stamp = line_list.header.stamp = text_view_facing.header.stamp =ros::Time();
marker.ns = line_list.ns = text_view_facing.ns ="lines";
marker.action = line_list.action = text_view_facing.action = visualization_msgs::Marker::ADD;
marker.pose.orientation.w = line_list.pose.orientation.w = text_view_facing.pose.orientation.w = 1;
marker.id = 0;
line_list.id = 1;
text_view_facing.id = 2;
marker.type = visualization_msgs::Marker::POINTS;
line_list.type = visualization_msgs::Marker::LINE_LIST;
text_view_facing.type = visualization_msgs::Marker::TEXT_VIEW_FACING;
text_view_facing.color.b = 1; text_view_facing.color.a = 1.0; text_view_facing.color.g = 1.0; text_view_facing.color.r = 1.0;
line_list.color.r = 0; line_list.color.g = 0; line_list.color. b = 1; line_list.color.a = 1;
text_view_facing.scale.z = 0.015;  line_list.scale.x = 0.001;
marker.header.stamp = ros::Time::now();
marker.lifetime = ros::Duration(0.01);
marker.scale.x = 0.002;
marker.scale.y = 0.002;
marker.scale.z = 0.002;
marker.color.a = 1.0;
marker.color.r = 0.0;
marker.color.g = 1.0;
marker.color.b = 0.0;
string obj1 = "first_segmented_image";
vector<line_list> line;
line.resize(2);

    bigarray size_arr, arr0;
    for(int p0=0;p0<bound.size() && ros::ok();p0++) {
        p[0] = output.at(bound[p0].x,bound[p0].y);
        if(!isnan(p[0].x) && !isnan(p[0].y) && !isnan(p[0].z)) {
            P.x = p[0].x; P.y = p[0].y; P.z = p[0].z;
            pc.r = 1; pc.g = 1; pc.b = 1; pc.a = 1;
            marker.points.clear(); marker.colors.clear();
            marker.points.push_back(P);
            marker.colors.push_back(pc);
            marker_pub.publish(marker);
        }
        for(int p1=0;p1<bound.size() && ros::ok();p1++) {
            p[1] = output.at(bound[p1].x,bound[p1].y);
            /*if(!isnan(p[0].x) && !isnan(p[0].y) && !isnan(p[0].z)) {
                P.x = p[0].x; P.y = p[0].y; P.z = p[0].z;
                pc.r = 1; pc.g = 1; pc.b = 1; pc.a = 1;  marker.points.clear(); marker.colors.clear();
                marker.points.push_back(P);
                marker.colors.push_back(pc);
                marker_pub.publish(marker);
            }*/
            if(!isnan(p[1].x) && !isnan(p[1].y) && !isnan(p[1].z)) {
                line[0].points.clear(); line[0].colors.clear();
                line[0].scale.x = 0.00075; line[0].colors.push_back(pc);
                P.x = p[0].x; P.y = p[0].y; P.z = p[0].z;  line[0].points.push_back(P);
                P.x = p[1].x; P.y = p ...