Zusammenfassung
Calculates the Modified Soil Adjusted Vegetation Index (MSAVI2) from a multiband raster object and returns a raster object with the index values.
Diskussion
Die Methode "Modified Soil Adjusted Vegetation Index (MSAVI2)" minimiert die Auswirkung des nackten Erdbodens auf den 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.
Syntax
MSAVI (raster, {nir_band_id}, {red_band_id})| Parameter | Erläuterung | Datentyp |
raster | The input raster. | Raster |
nir_band_id | The band ID of the near-infrared band. The ID index uses one-based indexing. (Der Standardwert ist 4) | Integer |
red_band_id | The band ID of the red band. The ID index uses one-based indexing. (Der Standardwert ist 3) | Integer |
| Datentyp | Erläuterung |
| Raster | The output raster object with the MSAVI2 index values. |
Codebeispiel
Calculates the Modified Soil Adjusted Vegetation Index for a Landsat 8 image.
import arcpy
MSAVI_raster = arcpy.ia.MSAVI("Landsat8.tif", 5, 4)