Calculate NDVI using ERDAS Imagine Model Maker

In this video we shows that how toCalculate NDVI using ERDAS Imagine Model Maker.

[@jgrao4514]

Thanks for video. How to calculate AWEIsh using Model Maker?

[@boop5110]

Help its showing black .img image after i run this whole process

[@geospatialworld4180]

Dear, First you check your band stacking combination