The characteristics of canopy shadow are associated by the total spectral radiance that is reflected from the canopy. Canopy shadow provides essential information about trees and plants arrangement. As a remote sensing index, Shadow Index (SI) is calculated using the visible bands of the spectrum, in a way that simulates the amount energy not reflected back to the sensor. It is usually combined with other indices like AVI and BSI to understand the status of vegetation (Sykas, 2025).

Shadow Index

Earth system dynamics, such as plant dynamics, water bodies, and fire regimes, are widely monitored using spectral indicators obtained from multispectral remote sensing products. There is a great need for spectral index catalogues and computing tools as a result of the quick rise of suggested spectral indices. Unfortunately, the majority of these resources lack a standard Application Programming Interface, are out-of-date, closed-source, or are not linked to a catalogue. We now introduce 'VegSpecIndex', a standardised list of spectral indices for studies of the earth system. A thorough inventory of spectral indices is offered by 'VegSpecIndex' and is connected to an R library. For every spectral index, 'VegSpecIndex' provides a comprehensive collection of information, such as names, formulae, and source references. The user community may add more items to the catalogue, which will keep 'VegSpecIndex' up to date and allow for further scientific uses. Additionally, the R library makes it possible to apply the catalogue to actual data, which makes it easier to employ remote sensing resources effectively across a variety of Earth system domains.

Tanuj Misra 

VegSpecIndex

Vegetation and Spectral Indices for Environmental Assessment

Avijit Ghosh

Ram S Chaurasia

Tanuj Misra

Amit Kumar Singh

Shailendra Kumar

Abhishek Chakraborty

Devanand 

J P Singh 

A K Shukla 

SI function

<dl><dt>BLUE</dt>
<dd>Blue spectral band</dd><dt>GREEN</dt>
<dd>Green spectral band</dd><dt>RED</dt>
<dd>Red spectral band</dd></dl>

Arguments

Shadow Index — SI

<dl>

<dt>BLUE</dt>
<dd>Blue spectral band</dd>

<dt>GREEN</dt>
<dd>Green spectral band</dd>

<dt>RED</dt>
<dd>Red spectral band</dd>

</dl>

SI: Shadow Index

Description

Usage

Value

Arguments

References

Examples