count_subareas_random: Random Subgrid Sampling of a Binary Matrix

In r4pde: Companion to R for Plant Disease Epidemiology Book

Random Subgrid Sampling of a Binary Matrix

Description

Randomly samples submatrices (quadrats) of specified size from a binary matrix, and returns the positions, submatrices, and count of 1s in each sampled quadrat.

Usage

count_subareas_random(matrix_data, sub_rows = 3, sub_cols = 3, n_samples = 100)

Arguments

matrix_data	A binary matrix of 0s and 1s.
sub_rows	Number of rows in each subgrid sample.
sub_cols	Number of columns in each subgrid sample.
n_samples	Number of subgrid samples to draw.

Value

A list of sampled subgrids. Each element is a list with:

position	Row and column start position of the sample.
submatrix	The sampled subgrid matrix.
count	Number of 1s in the sampled submatrix.

See Also

Other Spatial analysis: AFSD(), BPL(), count_subareas(), fit_gradients(), join_count(), oruns_test(), oruns_test_boustrophedon(), oruns_test_byrowcol(), plot_AFSD()

r4pde documentation built on July 2, 2025, 5:09 p.m.