roi2blocksub

Convert ROI to block subscripts

Since R2022a

Syntax

blocksubs = roi2blocksub(bpc,roi)

Description

blocksubs = roi2blocksub(bpc,roi) converts the specified ROI roi to the block subscripts blocksubs of the blocks of the blocked point cloud data bpc contained within the ROI.

Examples

Get Block Subscripts from ROI

Create a blocked point cloud from a LAZ file.

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

Convert ROI limits to the block subscripts of the block contained within the ROI.

blocksubs = roi2blocksub(bpc,[429745.02 429775.02 ...
                3679830.75 3679860.75 72.79 125.82]);

Display the block subscripts.

disp(blocksubs)

     1     1     1

Input Arguments

bpc — Blocked point cloud

blockedPointCloud object

Blocked point cloud, specified as a blockedPointCloud object.

roi — ROI limits of the block

six-element row vector

ROI limits of the block, specified as a six-element row vector of form [xmin xmax ymin ymax zmin zmax], defining the range of the block.

Output Arguments

blocksubs — Subscripts of blocks

K-by-3 integer-valued matrix

Subscripts of the blocks, returned as a K-by-3 integer-valued matrix. K is the number of blocks in the specified ROI. The elements of each row correspond to the X-, Y- and Z-axes respectively.

Version History

Introduced in R2022a