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 Índice de vegetación ajustada de suelo modificado (MSAVI2) intenta minimizar 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})| Parámetro | Explicación | Tipo 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-edge band. The ID index uses one-based indexing. (El valor predeterminado es 3) | Integer |
| Tipo de datos | Explicación |
| Raster | The output raster object with the MSAVI2 index values. |
Muestra de código
Calculates the Modified Soil Adjusted Vegetation Index for a Landsat 8 image.
import arcpy
MSAVI_raster = arcpy.sa.MSAVI("Landsat8.tif", 5, 4)