GVITM

Summary

Calculates the Green Vegetation Index for Landsat TM (GVITM) from a Landsat TM image and returns a raster object with the index values.

Discussion

The Green Vegetation Index (GVI) method was originally designed from Landsat MSS imagery and has been modified for Landsat TM imagery. It's also known as the Landsat TM Tasseled Cap green vegetation index. It can be used with imagery whose bands share the same spectral characteristics.

GVI=-0.2848 * Band1 - 0.2435 * Band2 - 0.5436 * Band3 + 0.7243 * Band4 + 0.084 * Band5 - 1.18 * Band7

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

GVITM (raster, {band1_id}, {band2_id}, {band3_id}, {band4_id}, {band5_id}, {band7_id})

Parameter	Explanation	Data Type
raster	The input raster.	Raster
band1_id	The band index of Band 1 from the Landsat TM image. The band ID index uses one-based indexing. (The default value is 1)	Integer
band2_id	The band index of Band 2 from the Landsat TM image. The band ID index uses one-based indexing. (The default value is 2)	Integer
band3_id	The band index of Band 3 from the Landsat TM image. The band ID index uses one-based indexing. (The default value is 3)	Integer
band4_id	The band index of Band 4 from the Landsat TM image. The band ID index uses one-based indexing. (The default value is 4)	Integer
band5_id	The band index of Band 5 from the Landsat TM image. The band ID index uses one-based indexing. (The default value is 5)	Integer
band7_id	The band index of Band 7 from the Landsat TM image. The band ID index uses one-based indexing. (The default value is 7)	Integer

Return Value

Data Type	Explanation
Raster	The output raster object with the Green Vegetation Index - Landsat TM values.