swectral.vegeind.cri550#

swectral.vegeind.cri550(spec_array, wavelength, axis=0)[source]#

Compute CRI550 (Carotenoid Reflectance Index 550) of 2D array-like of 1D spectra data series. The calculation is based on:

Gitelson, A.A.; Zur, Y.; Chivkunova, O.B.; Merzlyak, M.N.
Assessing Carotenoid Content in Plant Leaves with Reflectance Spectroscopy.
Photochem. Photobiol. 2007, 75, 272–281,
https://doi.org/10.1562/0031-8655(2002)0750272accipl2.0.co2.

Parameters:

spec_array2D array_like, shape (n_samples, n_features): 2D array-like of 1D spectral data series.
wavelength1D array_like: Wavelengths for the spectra data.
axisint, optional: Axis of spectral data series index, must be 0 or 1. If 0, each row represents a sample spectrum.

Returns:

pandas.DataFrame: Dataframe containing spectral indices of the samples.

Return type:

DataFrame