サマリー
Calculates the Modified Soil Adjusted Vegetation Index (MSAVI2) from a multiband raster object and returns a raster object with the index values.
説明
Modified Soil Adjusted Vegetation Index (MSAVI2) メソッドは、SAVI での露出土壌の影響を最小限に抑えます。
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.
構文
MSAVI (raster, {nir_band_id}, {red_band_id})| パラメーター | 説明 | データ タイプ |
raster | The input raster. | Raster |
nir_band_id | The band ID of the near-infrared band. The ID index uses one-based indexing. (デフォルト値は次のとおりです 4) | Integer |
red_band_id | The band ID of the red band. The ID index uses one-based indexing. (デフォルト値は次のとおりです 3) | Integer |
| データ タイプ | 説明 |
| Raster | The output raster object with the MSAVI2 index values. |
コードのサンプル
Calculates the Modified Soil Adjusted Vegetation Index for a Landsat 8 image.
import arcpy
MSAVI_raster = arcpy.ia.MSAVI("Landsat8.tif", 5, 4)