hasdata

Returns true if more data is available in blockedPointCloudDatastore

Since R2022a

Syntax

tf = hasdata(bpcds)

Description

tf = hasdata(bpcds) returns a logical scalar, true or false, indicating the availability of data in the blockedPointCloudDatastore object bpcds. Use hasdata in conjunction with the read function to read all the data within the datastore. Call hasdata before calling read.

Examples

Read Until All Data in blockedPointCloudDatastore Has Been Read

Create a blocked point cloud.

pcfile = fullfile(toolboxdir("lidar"),"lidardata", ...
                       "las","aerialLidarData.laz");
bpc = blockedPointCloud(pcfile,[300 300]);

Create a blockedPointCloudDatastore from the blocked point cloud.

bpcds = blockedPointCloudDatastore(bpc);

Read data and metadata from the blockedPointCloudDatastore. Display the metadata.

while hasdata(bpcds)
      [data,info] = read(bpcds);
      disp(info)
end

                ROI: [4.2975e+05 4.3005e+05 3.6798e+06 3.6801e+06 72.7900 125.8200]
           BlockSub: [1 1 1]
           PCNumber: 1
    PointAttributes: [1x1 lidarPointAttributes]
          BlockSize: [300 300 53.0300]

                ROI: [4.3005e+05 4.3035e+05 3.6798e+06 3.6801e+06 72.7900 125.8200]
           BlockSub: [2 1 1]
           PCNumber: 1
    PointAttributes: [1x1 lidarPointAttributes]
          BlockSize: [300 300 53.0300]

Input Arguments

bpcds — Blocked point cloud datastore

blockedPointCloudDatastore object

Blocked point cloud datastore, specified as a blockedPointCloudDatastore object.

Output Arguments

tf — Data availability

true or 1 | false or 0

Data availability, returned as a logical 1 (true) or 0 (false).

Version History

Introduced in R2022a