mosaic_extract

This function extracts values from a raster mosaic based on the regions
defined in a shapefile using <code>exactextractr::exact_extract()</code>.

Tools for both single and batch image manipulation and
analysis (Olivoto, 2022 <doi:10.1111/2041-210X.13803>) and
phytopathometry (Olivoto et al., 2022 <doi:10.1007/S40858-021-00487-5>).
The tools can be used for the quantification of leaf area, object
counting, extraction of image indexes, shape measurement, object
landmark identification, and Elliptical Fourier Analysis of object
outlines (Claude (2008) <doi:10.1007/978-0-387-77789-4>). The package
also provides a comprehensive pipeline for generating shapefiles with
complex layouts and supports high-throughput phenotyping of RGB,
multispectral, and hyperspectral orthomosaics. This functionality
facilitates field phenotyping using UAV- or satellite-based imagery.

Tiago Olivoto

pliman

Tools for Plant Image Analysis

mosaic_extract function

<dl><dt>mosaic</dt>
<dd>A <code>SpatRaster</code> object representing the raster mosaic from which
values will be extracted.</dd>
<dt>shapefile</dt>
<dd>A shapefile, which can be a <code>SpatVector</code> or an <code>sf</code> object,
defining the regions of interest for extraction.</dd>
<dt>fun</dt>
<dd>A character string specifying the summary function to be used for
extraction. Default is <code>"median"</code>.</dd>
<dt>...</dt>
<dd>Additional arguments to be passed to <code>exactextractr::exact_extract()</code>.</dd></dl>

Arguments

Extract Values from a Raster Mosaic Using a Shapefile — mosaic_extract

<dl>

<dt>mosaic</dt>
<dd>A <code>SpatRaster</code> object representing the raster mosaic from which
values will be extracted.</dd>


<dt>shapefile</dt>
<dd>A shapefile, which can be a <code>SpatVector</code> or an <code>sf</code> object,
defining the regions of interest for extraction.</dd>


<dt>fun</dt>
<dd>A character string specifying the summary function to be used for
extraction. Default is <code>"median"</code>.</dd>


<dt>...</dt>
<dd>Additional arguments to be passed to <code>exactextractr::exact_extract()</code>.</dd>

</dl>

mosaic_extract: Extract Values from a Raster Mosaic Using a Shapefile

Description

Usage

Value

Arguments