GBLK computes index templates of the form
for very fast extraction of data blocks from 2d matrices of any type.
data blocks can be non-, partial-, or fully overlapping.
the output can be reused to extract data from other matrices of the same size.
the templates can be modified to extract only selected data blocks and/or to extract only selected values from a data block.
CELLFUN can be used to compute further results from the extracted data blocks
> help gblk
and the accompanying published M-file for info and a few self-explanatory examples.
an ND version of GBLK will be posted soon.
us (2022). gblk: a pedestrian data block extractor (https://www.mathworks.com/matlabcentral/fileexchange/14801-gblk-a-pedestrian-data-block-extractor), MATLAB Central File Exchange. Retrieved .
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