MSAVI

Resumen

Calculates the Modified Soil Adjusted Vegetation Index (MSAVI2) from a multiband raster object and returns a raster object with the index values.

Debate

El método Índice de vegetación ajustada de suelo modificado (MSAVI2) minimiza el efecto del terreno desnudo en el SAVI.

MSAVI2 = (1/2) * (2 * (NIR +1) - sqrt((2 * NIR + 1)2-8(NIR - Red)))

For information about other multiband raster indexes, see the Band Arithmetic raster function.

The referenced raster dataset for the raster object is temporary. To make it permanent, you can call the raster object's save method.

Sintaxis

MSAVI (raster, {nir_band_id}, {red_band_id})
ParámetroExplicaciónTipo de datos
raster

The input raster.

Raster
nir_band_id

The band ID of the near-infrared band. The ID index uses one-based indexing.

(El valor predeterminado es 4)

Integer
red_band_id

The band ID of the red band. The ID index uses one-based indexing.

(El valor predeterminado es 3)

Integer
Valor de retorno
Tipo de datosExplicación
Raster

The output raster object with the MSAVI2 index values.

Muestra de código

MSAVI example

Calculates the Modified Soil Adjusted Vegetation Index for a Landsat 8 image.

import arcpy

MSAVI_raster = arcpy.ia.MSAVI("Landsat8.tif", 5, 4)