I have hundreds of images comprising NIR and Red bands for calculating NDVI which will be used in Time series analysis. I am not familiar with batch processing and I wish to automate the NDVI calculation from these many images. I could create a model using Modelbuilder and got NDVI image from one set of NIR and Red bands and I wish to run this model fro remaining images. But I do not know how to loop this iterate this what do to next. My time will be saved when a batch processing is taken up rather than running this model for every set of NIR and Red bands. I solicit a kind help in solving my problem.