What would be the Visible band ID and Infrared Band ID for Landsat 4/5 ? Lastly why are we not using a true color composite for the tutorial above? I hope that makes sense.
For Landsat 4 and 5, the band IDs you'll need for calculating NDVI (Normalized Difference Vegetation Index) are as follows: Visible Band ID (Red): Band 3 (0.63 - 0.69 µm) Infrared Band ID (Near Infrared): Band 4 (0.76 - 0.90 µm) Why Not Use a True Color Composite? A true color composite (which typically uses bands 3, 2, and 1 for Red, Green, and Blue) is not used for NDVI calculations because NDVI specifically measures vegetation health by comparing the reflectance in the visible red band to the near-infrared band. The NIR band is critical for distinguishing healthy vegetation from other land cover types, as healthy vegetation reflects more infrared light compared to other surfaces. Using true color composites can provide visually appealing images but won't give the necessary information for calculating NDVI effectively. NDVI relies on the specific spectral properties of vegetation, which are best captured with the designated bands.
What would be the Visible band ID and Infrared Band ID for Landsat 4/5 ? Lastly why are we not using a true color composite for the tutorial above? I hope that makes sense.
For Landsat 4 and 5, the band IDs you'll need for calculating NDVI (Normalized Difference Vegetation Index) are as follows:
Visible Band ID (Red): Band 3 (0.63 - 0.69 µm)
Infrared Band ID (Near Infrared): Band 4 (0.76 - 0.90 µm)
Why Not Use a True Color Composite?
A true color composite (which typically uses bands 3, 2, and 1 for Red, Green, and Blue) is not used for NDVI calculations because NDVI specifically measures vegetation health by comparing the reflectance in the visible red band to the near-infrared band. The NIR band is critical for distinguishing healthy vegetation from other land cover types, as healthy vegetation reflects more infrared light compared to other surfaces.
Using true color composites can provide visually appealing images but won't give the necessary information for calculating NDVI effectively. NDVI relies on the specific spectral properties of vegetation, which are best captured with the designated bands.
Informative 👍
Thank you
How many meters resolution does it have?
30 metre resolution
would u pls share the tutorial data
Sorry Mr. RMWK Rathnayake, We can't share the data. You can download it from EarthExplorer website