FerrousMinerals

サマリー

Calculates the Ferrous Minerals (FM) ratio from a multiband raster object and returns a raster object with the index values.

ディスカッション

The ferrous minerals ratio highlights iron-bearing materials. It uses ratio between the SWIR band and the NIR band.

\(Ferrous\ Minerals\ Ratio\ =\ SWIR \space / \space NIR\)

• SWIR = pixel values from the short-wave infrared band

• NIR = pixel values from the near infrared band

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

FerrousMinerals(raster, {swir_band_id}, {nir_band_id})

パラメーター	説明	データ タイプ
raster	The input raster.	Raster
swir_band_id	The band ID of the shortwave infrared (SWIR) band. The band ID index uses one-based indexing. The default value is 6.	Integer
nir_band_id	The band ID of the near-infrared band. The ID index uses one-based indexing. The default value is 5.	Integer

戻り値

データ タイプ	説明
Raster	The output raster object with the Ferrous Minerals ratio values.

コードのサンプル

FerrousMinerals example

Calculates the Ferrous Minerals ratio for a Sentinel-2 image.

import arcpy

FerrousMinerals_raster = arcpy.ia.FerrousMinerals("Sentinel2.tif", 11, 8)