getBlock

Read specific block of blocked point cloud

Since R2022a

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Syntax

ptCloud = getBlock(bpc,blocksub)

[ptCloud,pointAttributes] = getBlock(___)

Description

ptCloud = getBlock(bpc,blocksub) returns the block specified by the subscript location blocksub.

example

[ptCloud,pointAttributes] = getBlock(___) returns additional point attribute information pointAttributes using the input arguments from the previous syntax, if the input is a LAZ or LAS file.

Examples

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Read Block from Blocked Point Cloud

Open Live Script

Create a blocked point cloud from a LAZ file.

pcfile = fullfile(toolboxdir("lidar"),"lidardata", ...
  "las","aerialLidarData.laz");
bpc = blockedPointCloud(pcfile,[50 50]);

Display the size, in blocks, of the blocked point cloud.

disp(bpc.SizeInBlocks)

     9     6     1

Read a specific block of the point cloud.

block = getBlock(bpc,[2,2,1]);

Plot the point cloud data of the specified block.

pcshow(block)

Figure contains an axes object. The axes object contains an object of type scatter.

Input Arguments

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`bpc` — Blocked point cloud
`blockedPointCloud` object

Blocked point cloud, specified as a blockedPointCloud object.

`blocksub` — Block subscripts
three-element integer-valued row vector

Block subscripts, specified as a three-element integer-valued row vector. Valid values for each element range from 1 to the value of the corresponding element in the SizeInBlocks property of bpc.

Example: [3 2 1]